dysteleologist 
dysteleologist (dis-tel-e-ol'o-jist), n. [< dys- 
teleology + -ist.'] One who believes in dystele- 
ology. 
Dystdeologists, without admitting a purpose, had not 
felt called upon to deny the fact. . 
L. F. Ward, Dynam. Sociol., I. 173. 
(dis-tel-f-ol'o-ji), . [< Or. Sva-, 
, + reXof (refc-), en d> purpose, + -Aoyia, < 
Myeiv, speak: see teleology.] The science of 
rudimentary or vestigial organs, apparently 
functionless or of no use or purpose in the 
economy of the organism, with reference to 
the doctrine of purposelessness. The idea is that 
many useless or even hurtful parts may be present in an 
organism In obedience to the law of heredity simply, and 
that such are evidences of the lack of design or purpose 
or " final cause " which the doctrines of teleology presume. 
The Doctrine of Purposelessness, or Dysteleology. 
Haeckel, Evol. of Man (trans.), 1. 109. 
It is no wonder that Mr. Romanes should avow his "to- 
tal inability to understand why the phenomena of instinct 
should be more fatal to the doctrine of Dysteleology than 
any other of the phenomena of nature." YVYTT 
Fortnightly Rev., N. S., XXXIX. 63. 
Dysteria (dis-te'ri-a), n. [NL., < Gr. Sva-, 
hard, + rr/pciv, watch, have an eye on, keep ; cf . 
SvarfipriTOf, hard to keep.] The typical genus of 
Dysteriidce. D. armata of Huxley, which inhabits salt 
water, has such a structure that it has been supposed by 
Oosse to be a rotifer. 
Dysteriidae (dis-te-rl'i-de), n. pi. [NL., < 
Dysteria + -idee.'] A family of free-swimming 
animalcules, more or less ovate, cylindrical, 
flattened or compressed, and mostly encui- 
rassed. They have the carapace simple or consisting of 
two lateral, subequal, conjoined, or detached valves ; cilia 
confined to the more or less narrow or constricted ventral 
surface; the oral aperture followed by a distinct pharynx, 
the walls of which are strengthened by a simple horny 
tube, by a cylindrical fascicle of corneous rods, or by 
otherwise differentiated corneous elements ; a conspicuous 
tail-like style, or compact fascicle of setose cilia present- 
ing a style-like aspect, projecting from the posterior ex- 
tremity. Most of them inhabit salt water. 
Dysterina (dis-te-rl'na), n. fl. [NL., < Dys- 
teria + -ina?.] A family of ciliate infusonans, 
typified by the genus Dysteria. Claparede and 
Laclimann, 1858-60. See Dysteriidce. 
dysthesia (dis-the'si-a), n. [NL., < Gr. dvaOtata, 
a bad condition, < dumerof, in bad condition: 
see dysthetic.'] Inpathol., a non-febrile morbid 
state of the blood-vessels ; a bad habit of body 
dependent mainly upon the state of the circu- 
lating system. 
dysthetic (dis-thet'ik), a. [< Gr. Modems, in 
bad case, in bad condition, < Sva-, bad, + 6er6f, 
verbal adj. of n-Oe-vai, put, place.] Of, per- 
taining to, or characterized by dysthesia. 
dysthymic (dis-thim'ik), a. [< Gr. SvadvfUK6^, 
melancholy, < dva&vfiia, despondency, despair, 
< duo--, bad, + Bv/iof, spirit, courage.] In pa- 
1812 
thol, affected with despondency; depressed in 
spirits; dejected. 
dystocia (dis-to'si-a), n. [NL., < Gr. Owmttia, 
a painful delivery," < S'varoKO^, bringing forth 
with pain, < Sva-, hard, + rinruv, nitclv, bring 
forth.] In pathol., difficult parturition. Also 
dystolda. 
dystome (dis'tom), a. Same as dystomic. 
dystomic, dystomouS (dis-tom'ik, dis'to-mus), 
a. [< Gr. SVOTO/WS, hard to cut (but taken in 
pass, sense 'badly cleft'), < <ko-, hard, bad, + 
rofiof, verbal adj. of rifivciv, cut.] In mineral., 
having an imperfect fracture or cleavage. 
dystrophic (dis-trof 'ik), . [< dystrophy + -ic.~\ 
Pertaining to a perversion of nutrition. 
dystrophy (dis'tro-fi), n. [< Gr. Sva-, hard, ill, 
+ -potfi, nourishment, < rptyiv, nourish.] In 
pathol, perverted nutrition. 
dysuria (dis-u'ri-a), n. [LL., < Gr. Svaavpia, < 
Sva-, hard, + avpov, urine.] In pathol., difficulty 
in micturition, attended with pain and scald- 
ing. Also dysury. 
dysuric (dis-u'rik), a. [< dysuria + -ic.] Per- 
taining to or of the nature of dysuria; affected 
with dysuria. 
dysury (dis'u-ri), n. Same as dysuria. 
Dytes (di'tez), n. [NL. (Kaup, 1829), < Gr 
dvrr/e, a diver, < imiv, dive.] A genus of small 
grebes, of the family Podicipedidce, containing 
such species as the horned and the eared grebe. 
Dyticidae, n. pi. See Dytiscidw. 
Dyticus, n. "See Dytiscus. 
dytiscid (di-tis'id), a. and n. I. a. Of or per- 
taining to the Dytiscidce. 
II. n. A water-beetle of the family Dytiscidce. 
Dytiscidae, Dyticidae (di-tis'i-de), n. pi. [NL., 
< Dytiscus, Dyticus, + -idie.'} A family of two- 
eyed aquatic adephagous CoUoptera, or preda- 
tory beetles, having the metasternum destitute 
of an antecoxal piece, but prolonged in a trian- 
gular process posteriorly, the antennae slender, 
filiform, or setaceous, and the abdomen with 
six segments. The Dytiscidee are related to the ground- 
beetles or Carabidte, but differ in the form of the meta- 
sternum, and in the structure of the legs, which are nata- 
torial. They are water-beetles, mostly of large size, with 
narrowly oval depressed bodies and oar-like hind legs, 
found almost everywhere in fresh water. 
Dytiscus, Dyticus (dl-tis'kus, dit'i-kus), n. 
[NL., ong. and commonly Dytiscus (Linnseus), 
Dyticus (Geoffroy, 1764), < Gr. dvraoif, able to 
dive, < (Km, a diver, < Smiv, dive, sink, get into, 
enter.] The typical genus of predaceous wa- 
ter-beetles of the family Dytiscidce, having the 
metasternal spiracles covered by the elytra, 
the front tarsi five-jointed, and patellate in the 
male, and the hind tarsi not ciliate, with the 
claws equal. The numerous species are large, but 
difficult to distinguish. They are dark olive-green above, 
\ 
s fasci-venfr 
marginalia. (Na 
dziggetai 
the thorax and elytra being often margined with yellow. 
The elytra are smooth in the male, usually sulcate in the 
female. D.inmgi- 
nalis (Limiicus) is 
very abundant in 
Europe, inhabit- 
ing, like the other 
species, large 
bodies of stag- 
nant water. Some 
species are called 
water-butts. 
dyvour (dT- 
v6r), n. [Sc., 
also dyvor, di- 
rer, < F. devoir, 
a duty, obliga- 
tion, etc.: see 
dever and de- 
voir.'] In old 
Scots law, a 
bankrupt who had made a cessio bonorum to 
his creditors. 
Louis, what reck I by thee, 
Or Geordie on his ocean? 
Dyvor, beggar loons to me 
I reign in Jeanie's bosom. Burns. 
dzeren, dzeron (dze'ren, -ron), . [Mongol, 
name.] The Chinese antelope, Procapra guttu- 
rosa, a remarkably swift animal, inhabiting the 
arid deserts of central Asia, Tibet, China, and 
southern Siberia. It is nearly 4J feet long, and is 
2J feet high at the shoulder. When alarmed it clears 
over 20 feet at one bound. Also called goitered antelope 
and yell/m> goat. 
dziggetai (dzig'ge-ti), n. [Mongol, name.] 
wila ass of Asia, Equus liemionus, whose habits 
are graphically recorded in the book of Job, and 
which is believed to be the liemionus of Herod- 
otus and Pliny. It is intermediate in appearance 
and character between the horse and the ass (hence the 
specific name hemionus, half-ass). The males especially 
are fine animals, standing as high as 14 hands. It lives 
Dziggetai (Egutts kemvmus}. 
in small herds, and is an inhabitant of the sandy steppes 
of central Asia, 16,000 feet above sea-level. The dziggetai 
or hemione is one of several closely related species, or 
more probably varieties, of large wild Asiatic asses which 
appear to lack the black stripe across the withers. Two 
of these are sometimes distinguished under the names of 
kulan (Eqmui onager), a wide-ranging form, and kiang(b. 
kiang), of Tibet. See onager, ghm, and khur. Also 
spelled djiygetai and in other ways. 
