amphipodous 
eifically, of or pertaining to the Amphipoda, 
Equivalent forms are amphipoil, iiiii/ilii/i<nl<i!, 
amphipodan. 
Amphiporidae (am-ii-por'i-de), n. pi. [NL., < 
Amphinorux + -(<(.]_ In .-/., afamily of rhyn- ^^ a ,,.,, , ,..^_ 
ohocoelOUS turbellanans or m-incrtcans having amphisbsen'ian (am-fis-be'ni-an), . 
the proboscis armed with stylets, winch are * ,,,,,, + \ itlll j L ,,. ' O f or 
wanting in the other Ithynchoecela. Also called 
Enfiplu. 
Amphiporus (am-fip'o-rus), . [NL., < Gr. d/upi, 
on both sides, + iro^of , passage, pore.] A genus 
of nemerteans, typical of the family A in phi - 
porid(S (which see). A. laclijluru* is ;i Kuropcan 
species, A or 4 inches long, found under stones from the 
North Sea to the Mediterranean^ 
amphiprostylar (am"n-pr6-sti'lar), a. Same 
as amphiprostyle. 
amphiprostyle (am-fi-pro'stil), a. [< L. i- -f^- j amily Amp i,jsb(mida;. 
amphitheatrical 
sluggish and mostly nocturnal, of snake-like aspect from worms, of which the genus Ampliixtomum is the 
Hi, aii.-rnrc "I limiiV, und able to move either backward or type. Other genera are Diplostomnm and dttx- 
forward. /1'ittfi vi'ttv 
Amphisbaenia (am-fis-be'ni-a), n. pi. [NL., am nhistomoid (am-fis'to-moid), a. [< Amphi- 
--' A suporfamily group of lacer- st * HHHI + _,>,.] O f < 
tilians: a svuonvm of Amphisb&noida. 
' -'-'- and . [< 
'phixliii'Hii + -inn.] I. a. Of or pertaining 
to the amphisbsena, or to the Amphisbcenoida. 
II. H. Same as amphisbwna, 1. 
.mphisbaenic (am-fis-be'nik), a. [< amphis- 
birna + -:.] Like the amphisbasna; moving 
backward or forward with equal ease. An 
equivalent form is amphisbamous. 
Yoked to it by an amphisbcenic snake. 
Shelley, Prom. Unbound, iii. 4. 
Of or pertaining to the family 
.liiijiliistoniidii' ; amphistomous. 
. _ rr /, on both sides, + or<5ua, mouth : i 
Having a mouth-like orifice at either end of the 
body, by which to adhere to the intestines of 
animals, as some trematode parasitic worms; 
amphistomoid. 
Amphistomum (am-fis'to-mum), TO. [NL., neut. 
of amphiutomus, with double mouth : see amphis- 
tomous. ] A genus of trematode parasitic worms, 
amphisbaenid (am-fis-be'nid), . A lizard of typical of the family Amphistomidw. 
iheUn\yAMphisb<enida. amphistylic (am-fi-stl'lik), a. [< Gr apfa on 
pltiprostylos,<Gr. iut+mpiervMc, having a pro- ^jjjpljisbaenidae (am-fis-be'ni-de), n.pl. [NL., both sides, + ort>Ao?, a pillar : seestyte*.] Mav- 
style at both ends, < au.^1, on both sides, + n-po- < JmpMebtena + -id<e.~\ The typical family of ing pillars on both sides : applied in ro67. to the 
oTKAor, prostyle : nee prostyle.] Literally, having the Ampliisbainoida. It embraces sluggish skulls of sharks, which have supports for both 
columns both in front and behind. In arch., ai>- . ul j mostly nocturnal snake-like lizards, such as those of the upper and lower mandibular arches. Huxley. 
the genus Amphiibaiiia, which are limbless, and are thus amphitheater, amphitheatre (am-fi-the'a- 
distinguished from the Chirotidat (which see). tfer ^ >( _ r- Tne ] at t er spelling is now usual in 
Amphisbaenoida (am"fis-bf-noi'da), . pi. England, after the F., though formerly amphi- 
[NL., < Amphisbama + -oida."] One of the major ttteaier . O f. p. amphitheatre = Pg. amphitheatro 
Plan of Amphiprostyle Temple. 
plied to a structure having the plan of an ancient Greek 
or Roman rectangular temple with a portico at each end or 
in both front and rear, but no columns on the sides or flanks. 
Amphipyleae (am-fi-pil'e-e), . pi. [NL., < Gr. 
ay(p(7Tt)/of, with two entrances, < aftipi, on both 
sides, + irvty, a gate, entrance.] A division of 
Phteodaria (which see), containing those phaBO- 
bital septum of the skull. The position of the quad- 
rate bone is peculiar ; the skull in general resembles that 
of an ophidian; the vertebra) are proccelous, and have 
neither zygantrum nor zygosphene ; there is no sacrum ; 
and all but one or two of the precaudal vertebra; bear 
ribs. The bodies of these lizards are completely snake- 
like. AU the representatives of the group are limbless, 
excepting members of the genus Chirotet, which have a 
pair of small pectoral limbs. The tail is extremely short, 
so that the vent is near the end of the body. The integu- 
ment is not scaly. 
pi. 
______ 
dariaus which have pseudopodal openings at Amphisbsenoidsea (am"fis-be-noi'de-a), n. 
the opposite poles of the central capsule : dis- s ame as Amphisbwnoida. 
tinguished from Monopylece. Haeekel. amphisbaenous (am-fis-be'nus), a. Same as 
amphipylean (am"fi-pi-le'an), a. Of or per- 
taming to the Amphipyte<e. 
Amphirhina (a' 
of amphirlrinus: see amp 
Amphirhina (am-fi-ri'na). n.pl. [NL., neut. 
of amphirhinus : see amphirhine.' 
vision 
., . 
.'] A prime 
amphiscian (am-fish'i-an), TO. One of the am- 
including all except the Monorhina (which see) ; 
the double-breathers. It is a term expressive rather 
of an evolutionary series of animals than of a definite zoo- 
logical division. 
amphirhine (atn'fi-rin), a. [< NL. amphirhi- 
nus, < Gr. a/i$i, on both sides, + file, piv, nose.] 
phirhina. 
Should jaws be absent, the Cephalaspida; would approach 
the Marsipobranchii more nearly than any of the other 
atnphirhine fishes do. 
a'mphiscii (am-fish'i-i), TO. pi. [NL., < Gr. afi- 
0<ovaof, pi. afup'uriaoi, throwing a shadow both 
ways, < a/upl, on both sides, + aiad, shadow. 
Cf. antiscii."] In geog., the inhabitants of the 
intertropical regions, whose shadows at noon 
are cast in one part of the year to the north and 
in the other part to the south, according as the 
sun is in the southern or the northern signs. 
dan, as adj.] In her., double ; having two 
heads. 
Huxley, Anat Vert., p. 129. Amphisile (am-fis'i-le), . [NL., < Gr. dfapi or 
Remains of Amphitheater of Aries, France. 
(semicircular structure) on both sides, < a/uj>i, 
around, + Oiarpov, a place for seeing shows, 
a theater: see amphi- and theater.] 1. In owe. 
Bom. arch., an edifice devoted to the exhibition 
of gladiatorial contests and the combats of wild 
beasts. Such edifices were elliptical in form, and con- 
sisted of a central area or arena surrounded by a wall, 
from which, sloping upward and outward, were rows of 
seats for the spectators. The earliest amphitheaters were 
fishes. The body is much compressed, and is armed 
with bony plates connate with the vertebra and spinous 
processes ; the tail is deflected downward by the extension 
of the armature behind. Fishes of this family have an 
elongated tubiform snout, abdominal ventrals with a spine 
Amphisile sc. 
amphisarca (am-fi-sar'ka), n. [NL., < Gr. a/ifi, a/ifif, around ; it is uncertain what the last two 
on both sides, + odpi- (aapit-), flesh.] Any hard- syllables were intended to represent.] A genus 
rinded fruit having a succulent interior and a of fishes, typical of the family Ampliunhda, 
crustaceous or woody exterior, as the gourd, formerly referred to the sea-snipes, Fistulamdai 
[Rare.] or Aulostomid&, and by Gunther to the Centrw- 
amphisaurid (am-fi-sa'rid), . Adinosaurian cid<e._ 
reptile of the family Amphisauridte. amphlSllia (am-fis i-hd), . A nsh of the lam- 
Amphisauridae (am-fi-sa'ri-de), u. pi. [NL., < ily AmphisWda: 
Ampkisaurus + -idai.~] A family of dinosau- AmphlSllldae (am-fi-sil i-de), n. pi. [JNLi., 5 
rian reptiles: now superseded by Anchisauridai. Amphisile + -idce.~] A family of hemibrancni- 
AmphisaiirUS (am-fi-sa'rus), . [NL.,<Gr. a[uj>i, *!- Th.h^. 
on both sides, + aavpof, lizard.] A genus of dino- 
saurian reptiles with amphicoelous vertebrae. 
The name is now superseded by Anchisaurus, 
and is a synonym of Megadactylus of Hitchcocl* 
amphisbaena (am-fis-be'na), n. [Early mod. E. 
amphibene, ME. corruptly ' alphibena, = OF. am- 
phisbeine, mod. F. amphisbene = Sp. anfisbena, 
anfisibena = Pg. amphisbena = It. anfisbena, an- 
fesibena, < L. ampnisbcena, < Gr. a^iaftatva, a 
kind of serpent believed to move with either 
end foremost, < d/jifiif, at both ends, a form 
of a^i (see amphi-), + fiaiveiv, go, = L. venire, 
come, = E. come."] 1. A fabulous venomous 
serpent supposed to have a head at each end 
and to be able to move in either direction. 
Complicated monsters head and tail, 
Scorpion, and asp, and amphfebcena dire, 
Cerastes horn'd, hydrus, and elops drear, 
And dipsas. Milton, P. L., x. 524. 
Two vipers of one breed an amphisbcena, 
Each end a sting. Tennyson, Queen Mary, iii. 4. 
2. [cap."] [NL.] A genus of lizards distin- 
guished by the 
obtuseuess of 
the head and 
tail, typical of 
the family Am- 
phisbaenidu: The 
species, inhabiting 
tropical South 
America and the 
West Indies, are 
Remains of Amphitheater of Ntmes, France. 
made of wood ; the first built of stone date from the time 
of Augustus. The Colosseum or Flavian amphitheater at 
Koine was the largest of all the ancient amphitheaters, 
being capable of containing from 80,000 to 90,000 persons. 
Those at X lines and Verona are among the best examples 
remaining. The dimensions of the latter are 505i by 403 
feet, with a height of 100 feet. 
2. Anything resembling an amphitheater in 
form, as an oval or circular building with seats 
rising behind and above each other around a 
central open space, or a natural area sur- 
rounded by rising ground; in Jiort., a sloping 
arrangement of shrubs and trees. 
He surveys all the Wonders in this immense Amphi- 
theatre that lie between both the Poles of Heaven. 
Addison, Spectator, No. 31B. 
and several rays, and a dorsal flu crowded out of place by 
the extension of the dermal armature. It is a most re- 
markable type, and exceptional among fishes on account 
of the peculiar development of the skeleton as a sort of 
shell around the body. The body is almost transparent, Ho nf a mnrlprn theater 
and the organs, especially the air-bladder, can be dis- 3. The uppermost gallery ol a modern tneater. 
tinctly seen through it. The habits of the family are un- amphitheatral (am-fi-the'a-tral), O. [< L. am- 
known. Several species inhabit the high seas. phitheatralis, < amphitheatrum, amphitheater: 
amphismela (am-fis-me'la), n. [NL., < Gr. aft- see amphitheater.] Same as amphitlteatrieal. 
tpif, on both sides, + p//l??, a surgical instrument, amphitheatre, See amphitheater. 
a probe.] A double-edged surgical knife. amphitheatric (am*fi-the-at'rik), a. Same as 
amphispermilim (am-fi-sper'mi-um), n.; pi. am- amphitheatrical. 
phispermia (-a). [NL., < Gr. atfi, on both sides, amphitheatrical (ain'fi-the-at'ri-kal), a. 
+ cm([>/ui, seed.] In bot., a term proposed for an amphitheatricu$, < amphitheatrum: see . 
indchiseent one-seeded pericarp; an achenium. - * / ^ 
amphistome (am'fi-stom), TO. [< NL. Amphi- 
stomum.] An animal of the genus Amphisto- 
m n in or family Amphistomida?. 
amphistomid (am-fis'to-mid), . One of the 
AmpMstomtdte. 
Amphistomidae (am-fi-stom'i-de), n.pl. [NL.,< 
Amphistomum + -idee.] A family of trematode 
theater.] I. Of, pertaining to, or resembling 
an amphitheater. 
The first impression on seeing the . . . great amphi- 
theatrical depressions is, that they have been hollowed 
out, like other valleys, by the action of water. 
Darwin, Voyage of Beagle, II. 225. 
2. Taking place or exhibited in an amphithe- 
ater: as, amphitheatrical contests. 
