hemiolia 
introduced in the midst of a piece in place of 
two ; a triplet. 
hemiolic (hem-i-ol'ik), a. [< L. hemiolius (< Gr. 
i?/oAiof , containing one and a half , half as much 
again, < v/u-, half, + 6X0$-, whole) + -ic.] In arm. 
pros., constituting the proportion of H to l,orof 
3 to 2 : as, the hemiolic ratio (of thesis and arsis) ; 
characterized by such a proportion of thesis 
and arsis: as, hemiolic rhythm; ahemiolic foot; 
the hemiolic class of feet. The hemiolic class is 
also sometimes called the Pceonic, the two other princi- 
pal classes of feet being the diplasic, double, trochaic, or 
iambic, and the isorrhythmic, equal, or dactylic. See 
Pceonic. 
hemione (hem'i-on), . [< hemionus.] The 
dziggetai, half-ass, or wild ass of Asia, Equus 
hemionus or Asinus hemionus. See cut under 
dziggetai. 
hemionus (he-mi'o-nus), H. [NL., < Gr. > if uovof, 
a 'half -ass,' i. e. a mule, < /}//<-, half, + woe, an 
ass.] The specific name of Equus or Asinus 
hemionus, the hemione, half-ass, or dziggetai : 
used also as the English name of this animal. 
See cut under dsiggetai. 
A hybrid has been figured by Dr. Gray (and he informs 
me that he knows of a second case) from the ass and the 
hemionut- and this hybrid, though the ass only occasion- 
ally has stripes on his legs and the hemionus has none and 
has not even a shoulder-stripe, nevertheless had all four 
legs barred. Danrin, Origin of Species, p. 163. 
Hemiophrya (hem-i-of'ri-a), n. [NL., < Gr. 
ti/u-, half, + typi'S = E. brow.] A remarkable 
genus of acinetans, or suctorial tentaculiferous 
infusorians, having both prehensile and sucto- 
rial processes. H. gemmipara is an example. 
hemiopia (hem-i-6'pi-a), n. [< Gr. j/u-, half, + 
ui/j (WTT-), eye.] Same as hemianopsia. 
hemiopic (hem-i-op'ik), a. [< Gr. iJ/-, half, + 
2789 
Hemipodii (hem-i-po'di-i). n. pi. [NL., pi. of 
Hemipodius.] An anomalous group of three- 
toed birds of quail-like aspect, corresponding 
to the family Turnicidte, and formerly classed 
among gallinaceous birds; the ortygans, or 
old-world bush-quails. They resemble the grouse- 
pigeons ( Pteroclidai) and tinamous in some respects, and 
ill others are related to the plovers. The vertebra.- lack 
the extensive ankylosis usual in birds ; the palatal struc- 
ture is somewhat githognathous ; and in some at least 
there is but one carotid and no crop. The genera rurnix 
(or Jlemipodius), Ortyxelos, and I'edionomus compose the 
Hemipodius (hem-i-po'di-us), w. [NL. (so call- 
ed from the absence of the hind toe), < Gr. 
ifuMrouf (-7To<5-), half-footed (cf. fytarUtw, a half- 
foot)/ fifti-, half, + TOi'f (fforf-) = E.foot.] The 
typical genus of Hemipodii: same as Turmx. 
Reinhardt, 1815. 
hemiprism (hem'i-prizm), n. [< hemi- +pnsm.] 
In crystal, a prism in the triclinie system: so 
called because it includes in a given case only 
two planes which are parallel to each other. 
hemiprismatic (hem'i-priz-mat'ik), a. [< 
hemi- + prismatic, q. v.] Of or pertaining to a 
hemiprism: as, some feldspar crystals show 
hemiprismatic cleavage. 
hemipter (he-mip'ter), n. One of the Hemip- 
--, . . , 
> (u--), eye.] Same as nemianoptic. 
opsia, hemiopsy (hem-i-op'si-a, hem'i 
'i-op- 
hemiopsla, nemiqpsy (nem-i-on si-a, nem i-op- 
si), . [NL. hemiopsia, < Gr. qui-, half, + 6i/>(?, 
sight.] Same as hemianopsia. 
hemiorthotype (hem-i-6r'tho-tip), a. [< Gr. )}(-, 
half, + opfldf, straight, + rwrof , type : see ortlM- 
type.] Same as monoclinic. 
hemipalmate (hem-i-pal'mat), a. [< hemi- + 
palmate.] Half-webbed; semipalmate. 
hemiparaplegia(hem-i-par-a-ple'ji-a), n. [NL., 
< Gr. fjfu-, half, + irapaKliriyia, paralysis: see 
paraplegia.] In pathol., paralysis of one leg. 
hemiparesis (hem-i-par'e-sis), n. [NL., < Gr. 
$/u-, naif, + napeotf, a blackening: see paresis.] 
Paresis of one lateral half of the body. 
hemiparetic (hem-i-pa-ret'ik), a. [< hemipare- 
sis (-et-) + -ic.] Pertaining to or affected with 
hemiparesis. 
hemiphractid (hem-i-frak'tid), n. One of the 
Hemipliractidce. 
Hemiphractidse(hem-i-frak'ti-de), n.pl. [NL., 
< Hemiphractus + -idle.] A family of tailless 
amphibians, typified by the genus Hemiphractus. 
They have maxillary as well as peculiar mandibular teeth, 
subcylindrical sacral diapophyses, coracoids and precora- 
coids parallel, an omosternum, opisthocoslian vertebras, 
and the coccyx attached to two condyles. 
The Hemiphractidce include some forms in which the 
cranial ossification is remarkably developed. This forms 
a kind of helmet, which develops in some of the species 
into processes and crests. Stand. Nat. Hist,, III. 339. 
Hemiphractus (hem-i-frak'tus), . [NL., lit. 
' half-mailed ' (cf . cataphract), < Gr. ?//i<>po/cTOf , 
half -fenced, < y/u-, half, + ^pa/crdf, verbal adj. 
of (bpdaaeiv, fence, stop up.] A genus of tailless 
amphibians, typical of the family Hemiphrac- 
tida;. 
hemiphrase (hem'i-fraz), n. [< Gr. >/fu-, half, 
+ (ppdms, phrase.] In music, a half-phrase, 
usually occupying only one measure. 
hemiplegia (hem-i-ple'ji-a), n. [NL., < Gr. $/u- 
r?4f (-TTAtfy-), also iJpjrA^yfc stricken on one 
side, < Wi-, half, + ir^/tro-civ, strike.] In pathol., 
paralysis that affects one lateral half of the 
body. Also hemiplegy, liemiplexia. 
hemiplegic (hem-i-plej'ik), a. [< hemiplegia + 
-ic.] Relating to or affected with hemiplegia. 
hemiplegy (hem'i-ple-ji), n. Same as hemiple- 
Hemiptera (he-mip'te-ra), n. pi. [NL., neut. 
pi. of hemipterus, half-winged : see hemipterous.} 
An order of the class Insecta, founded by Lin- 
nteus in 1742, embracing a vast number of in- 
sects of diverse forms apparently not very 
closely related in structure, widely different 
in mode of life, and collectively known as 
buns. The metamorphosis is incomplete, except in the 
male coccids and related forms. The molt is usually re- 
peated four times, the stage next to the last, preceding 
the imago, being called pupa. There are four, or two, 
or no wings in different cases, and rarely halteres. The 
thoracic segments are either free or fused. The head is 
free or broadly united to the thorax, with or without 
faceted eyes. The essential characters of the order are 
found In the mouth-parts and associate modifications of 
the head and sternum, and in the wings. The mouth-or- 
gans are usually suctorial, the sucking-tube or haustellum 
being composed (in the higher forms) of two lateral half- 
channels or semicylindric pieces homologous with the 
labium and labial palpi. Thus the mouth-parts consist 
of a jointed tapering tube, arising from the front of the 
under side of the head, and inclosing four stiff bristles, 
which replace the mandibles and maxilla:, this whole ros- 
trum being adapted both for piercing and for sucking. 
There is no sucking-stomach. The modifications of the 
sternum are such as fit it to support the head and charac- 
teristic rostrum. In the largest group of Hemiptera 
the wings are thick and leathery at the base and mem- 
branous at the end. The tarsi are generally three- or two- 
jointed, rarely having only one joint. Most hemipterous 
insects feed on plant-juices or the blood of insects or ani- 
mals including man, but a few live on the moisture which 
collects under decaying bark, and certain of the higher 
forms subsist indifferently upon sap or blood. The He- 
miptera have more than once been separated into several 
different orders, but most entomologists continue to ac- 
cept the order in its original broad sense, dividing it into 
several suborders. Three of these universally recognized 
are Heteroptera, the true bugs ; Homoptera, the bark-lice, 
plant-lice, scale-insects, leafhoppers, cicadas, etc.; and 
Parasita, the true lice. About 27,000 species are cata- 
logued, and it is estimated that at least 50,000 exist. The 
Hemiptera thus outnumber far the Orthoptera and N<;u- 
hemisphere 
hemipyramidal (hem"i-pi-ram'i-dal), a. [< 
hcmipyramid + -al.] Of or pertaining to a hemi- 
pyramid. 
Hemirhamphin* (hem"i-ram-fi ne), n. pi. 
[NL., < Hemirhamphits + -in<e.] A subfamily 
of syuentognathous fishes, of the family Scom- 
beresocida' (or Exocuitidce), typified by the genus 
Hemirhamphm ; the halfbills: so called from 
the shortness of the upper jaw in comparison 
with the great length of the spear-like under 
jaw. These fishes are of slender, straight form, with mod- 
erate dorsal and anal fins. There are numerous species, of 
several genera, some of them viviparous. They are nearly 
related to the flying-fishes. See cut at lutlfbeak. 
hemirhamphine (hem-i-ram'fin), a. and . 1. 
a. Pertaining to or having the characters of the 
Hemirltamphince. 
II. n. A half bill or half beak; one of the Hemt- 
rhamphiiue. 
Hemirhamphus (hem-i-ram'tus), . [ML., <. 
Gr. >//u-, half, + p&pjtt, bill, snout.] A genus 
of fishes, of the family Scomberesocida;, giving 
name to the subfamily Hemirhamphiiue ; the 
halfbeaks. H. untfasciatus is a common representa- 
tive on the Atlantic coast of the United States, of some 
value as a food-fish; there are several others. Usually 
written Hemiramphus. Cumer,lSi7. See cut under half- 
hemisect (hem'i-sekt), v. t. [< Gr. fat-, half. 
+ L. sectus, pp. otsectare, cut: see secant, sec- 
tion.] To bisect; especially, to bisect longi- 
tudinally, or in equal right and left parts. 
A hemisected skeleton [of a vertebrate], showing the vari- 
ation in size of the neural and haemal cavities. 
Science, VI. 223. 
hemisection (hem-i-sek'shon), K. [< hemisect 
+ -ion, after section.] Bisection; especially, 
section of a part into right and left halves, or 
one of such halves. 
A hemisection of the whole body. Science, VI. 223. 
hemisepta, n. Plural of hemiseptum. 
hemiseptal (hem-i-sep'tal), a. [< hemiseptum 
+ -aL] Pertaining to a'hemiseptum. 
hemiseptum (hem-i-sep'tum), .; pi. hemisepta 
(-til). [NL., < L. hemi-, half, + septum, saip- 
tuiii, a partition.] In anat., the lateral half of 
a partition; the right or left part of a longitu- 
dinal septum, as that in the heart and brain. 
Hemiseptum auriculare, the lateral half of the parti- 
tion between the auricles of the heart. Hemiseptum 
cerebri, the lateral half of the septum lucidum of the 
brain. Hemiseptum ventrtculare, the lateral half of 
the partition between the ventricles of the heart. 
hemisome (hem'i-som), . [< Gr. ijfu-, half, + 
a, body. ] One half of an animal's body. 
* 
tiemiplexia (hem-i-plek'si-a), n. [< Gr. qumhit- 
%ia, < j)pir>jfrf, stricken on 'one side: see hemi- 
plegia.] Same as hemiplegia. 
heiriipod (hem 'i -pod), a. and n. [As Hemi- 
podius.] I. a. Pertaining to or having the 
characters of the Hemipodii. 
II. One of the Hemipodii (or TmntMda); 
a bird of the genus Hemipodiits; an ortygan. 
Also hemipode. 
hemipodan (he-mip'o-dan), a. Of or pertain- 
ing to the hemipods or Hemipodii. 
hemipode (hem'i-pod), . Same as hemipod. 
roptara, and possibly the Lepidoptera. Formerly also 
called Rtjngota, Siphonata, and Dermaptera (in part). 
hemipteral (he-mip'te-ral), a. Same as hemip- 
terous. 
hemipteran (he-mip'te-ran), a. and . I. a. 
Pertaining to or characteristic of the Hemip- 
tera: as, "the Hemipteran mouth," Huxley. 
II. . One of the Hemiptera. 
That terrible microscopic hemipteran, the chinch-bug. 
Pop. Scf. Ho., Aug., 1878, p. 512. 
hemipterist (he-mip'te-rist), n. [< Hemiptera 
+ -ist.] One who studies or collects the He- 
miptera. 
hemipteron (he-mip'te-ron), n. [NL., sing, of 
Hemiptera.] One of the Hemiptera. 
I noticed a singular case of ants milking a winged He- 
mipteron, which of course could not be kept in captivity, 
as they do many species of the wingless aphides. 
H. 0. Forbei, Eastern Archipelago, p. 251. 
hemipterous (he-mip'te-rus), a. [< NL. hemip- 
terus, half-winged, < Gr. r/ui-, half, + impSv, 
wing.] Half- winged that is, having the fore 
wings partly membranous and partly coria- 
ceous or chitinous ; specifically, of or pertain- 
ing to or having the characters of the Hemip- 
tera; found in or characterizing the Hemiptera. 
Also hemipteral. 
hemipyramid (hem-i-pir'a-mid), n. [< hemi- 
+ pyramid.] In crystal", a pyramid in the 
monoclinic system (see pyramid): so called 
because it embraces in a given case only four 
planes instead of eight. Corresponding forms arc 
distinguished as minus or plus, according as they lie op- 
posite the obtuse or the acute axial angle. 
The permanent retention of the radials in the abactlnal 
hemisome of the body of Amphiura. 
P. H. Carpenter, Micros. Science, XXVIII. 304. 
hemispasm (hem'i-spazm), n. [< Gr. rjiu-, half. 
+ mraafiof, spasm.] Spasm of one lateral half 
of the body. 
hemisphere (hem'i-sfer), . [ME. hemysperie, 
emyspire, etc. ; in mod. E. according to the L. ; 
= P. liemisphere = Sp. hemisferio = Pg. hemi- 
spherio = It. hemisferio, < L. hemisphcerium, < 
Gr. rjiuaijxiipiov, a hemisphere, < >?/"-> half, -4 
a<t>aipa, a sphere.] 1. A half-sphere; one half 
of a sphere or globe formed by a plane passing 
through the center. Specifically 2. Half of 
the terrestrial globe ; also, half of the celestial 
globe, or of the surface of the heavens. 
Night with his mantel, that is derk and rude, 
Gan oversprede the hemysperie aboute. 
Chaucer, Merchant's Tale, L 655. 
Sterre is ther noone In alle oure emyspire: 
Under whoos sight I gynne on November. 
Palladium, Husbondrie (E. E. T. S.\ p. 208. 
The hemisphere of earth, in clearest ken, 
Stretch'd out to the amplest reach of prospect lay. 
Milton, P. L., xl. 879. 
3. A map or projection of half of the terrestrial 
or the celestial sphere. 4. In anat. , either of the 
two large convex and convoluted masses, one on 
each side, which together with the fornix, cor- 
pus callosum, thalamencephalon, mesencepha- 
lon, and olfactory lobes make 
up the cerebrum. See brain, 
cerebrum, and cerebral. 
Eastern and western hemi- 
spheres, the eastern and western 
halves of the terrestrial globe. The 
former comprises the continents of 
Europe, Asia, and Africa, and then- 
islands, called the Old World, and 
the latter the two American con- 
tinents and their islands, called the 
New World. Magdeburg hemi- 
spheres, an instrument invented 
by Otto- von Quericke, which illus- 
trates the pressure of the atmo- 
sphere. It consists of two hollow 
brass hemispheres fitting nicely together and furnished 
with stout handles and with a vent and cock. When tne 
