T R I 
LlnnsEus mentions only one fpecies, the draco. 
Artedi refers the iiranofcope to this genus. The 
term is derived from the Greek Tracheinos, 
Rough, Sharp, or Prickly; expreffive of the 
prickly roughnefs of the rays of the dorfal fin. 
TRACHURUS. A fi{h of the fcomber 
kind; in Englifh, the fcad, or horfe-mackerel. 
Trachurus Braziliensis. An appellation 
by which Ray exprelTes a filh of the fcomber ki nd j 
the Scomber Cordyla of Linnseus-, more com- 
monly denominated Guaratereba. 
TRAGELAPHUS. An animal of the goat 
kind; of which there are two fpecies, the one de- 
fcribed by Gefner, and the other by Bcllonius. 
TRAGUM. A term whereby Ariftode, and 
fome of the ancient ichthyologifts, exprefs the pi- 
ftinacha marina of the more modern writers; in 
Englifh, the fire-flaire and fting-ray. 
TRASCINA. A name by which fome ich- 
thyologifts exprefs the fiOi more iifually denomi- 
nated draco marinus and araneus. 
TREBIUS. An appellation given by fome 
modern writers to the Phycis of Ariftotle, ^lian, 
and Pliny. 
TRIANGULAR FISH. A marine fifti of a 
very fingular figure, called in Englifh the coney- 
filh; of which there are two fpecies, the one hav- 
ing two horns, the other wanting that character. 
The horned fpecies is fometimes fix inches long, 
and three broad; the tail ends in a longifli fin; the 
mouth is fmall, with twelve ftrong ferrated teeth 
in the upper jaw, and eight larger ones in the 
lower; the head rifes gibboudy from the mouth 
to the horns; and the back is humped in the mid- 
dle. It has only one fmall fin near the tail; but 
there are four others on difi-'erent parts of the body. 
The eyes are large, and placed near the horns, 
which grow ftraight out of the forehead. It has 
no fcales; but a hard {k\n, white on the belly, and 
brown every where elfe, very curioufly marked 
with trigonal, tetragonal, pentagonal, and hexa- 
gonal figures. 
The fpecies deftitute of horns has a broader 
belly, and longer tail; and is marked over the 
whole body with hexangular figures only, and in- 
numerable fmall tubercles. The belly is yellow- 
ifh; and the reft of the body is of a greyifii yel- 
low hue. The mouth is narrow; the teeth are 
fmall, five in the lower, and eleven in the upper 
jaw; and the eyes are large and round. 
Both thefe fpecies belong to the genus of oftra- 
cion in the Linnfcan fyftem. They are caught 
among the rocks on the fnores of the Ifle of Java ; 
and are fometimes eaten by the natives, after be- 
ing fkinned. 
TRIBULUS MARINUS, the Caltrop Shell. 
A peculiar fpecies of purpura, of a whitifh co- 
lour, with three rows of fpines. 
TRICHECUS. In the Linnsan fyftem, a 
genus of the order of bruta, and clafs of mamma- 
lia : the characters of which are ; that it has nb cut- 
ting-teeth; that it has tuflcs only in the upper jaw; 
that the grinders on both fides are formed of a 
rugged bony fubftance; that the lips are germi- 
nated; and that the hinder feet are formed into 
fins. There are two fpecies; the manati, or fea- 
cow; and the morfe, or walrus. 
TRICHIDES. An appellation by which the 
ancients exprefied a fifh of the harrengiform kind, 
probably- the pilchard; called alfo fardinia and 
iardella. 
TRICHIURUS. A genus of the order of 
T R 1 
apodes: the chara^fters of which are; that the hei \ 
is extended, with lateral opcrcula; that the tetds 
are enfiform, and femi-fagittared at the apex; that 
it has feven bronchioilegous rays; that thtt bod? 
is comprefi'ed and enfiform ; and the tail ftibulated, 
without any fin: whence it is called lepturiis; in 
Englifli, the needle-tail. There is but one foe- 
cies; the Indian Eel of Willufrhby^ or Mucu of 
Brazil. 
TRICHOURI. A term by which fome na- 
turalifts exprefs fuch flies as have one or more 
hairs growing out of their taih : they arc alfo called 
feticaudre. 
TRIDACNiE. A genus of bivalve (hells. 
TRIEMERUS; the Three- day Fly. An in- 
fed fomewhat refembling a butterfly. It has fouf 
large yellowifh wings; a long body; a head fur- 
nifhed v.'ith long antenna; large eyes; and a fpi- 
ral trunk. It is found among nettles and mal^ 
lows. 
TRIGLA. A genus of fifhes, of the order of 
thoracici; of Vv'hich Linnseus enumerates nine fpe- 
cies. 
According to Artedi, the charafters of this ge- 
nus are the following: the branchioftep-e mem- 
brane contains feveral bones; the head is very de~ 
clivious from the eye to the extremity of the fnour, 
large, aculeated, and fquarifii; it is the broadeil: 
part of the fifli; and thence grows gi-adually nar- 
rov/er, till it ends in a very fmall tail; and in fe- 
veral ipccies of this fifli there are two or three ar- 
ticulated appendices grov/ing under th.e pt6toral 
fins. The eyes, which arc fituated on the top of 
the head, are covered with a fkin; there are two 
dorfal fins, the firft of which is prickly; and the 
peCtoral fins, in fome kinds, are very large. 
Many of thefe filh are capable o^' emittin^r a 
noife; and fome of them, by the aftiftance of their 
pectoral fins, can fufpend themfelves for a time 
out of the water, and fly to fome diftance. The 
appendices of the pylorus are from five to tv^enty 
in number. 
There are feven fpecies of Triglse with conti- 
nuous, obtufe, and undivided fnouts; among 
which is the red Trigla, with the fnout divided 
into two fmall horns, and the opercula of the gills 
ftriated: this is the cuculus and lyra of fome ich- 
thyologifts. Wlien taken our of the v/ater, it 
makes a grunting noife, fuppofed to imitate that 
of a cuckov/, from whence it receives one of it's 
names. 
Of thofe Triglfe, v/ith the .fiioiit very deeply di- 
vided, and opened into tv/o very broad parts, 
there are three fpecies. 
_ TRINGA, Sand-Piper. A diftinft genus oC 
birds of the order of grails: the diftinguilhing 
characters of which are; that the beak is roundifii, 
and of the length of the head; that the noftrils are 
linear; and that the feet have each four toes, the 
outer being generally conneded at bottom; by 
a fmall membrane. 
Linnjeus enumerates twenty-three fpecicsi 
among which are the pugnax avis, or rulfe; the 
vanellusjor lapv/ing; thegambetca; theturnftone; 
the phalai-ope; the ftint; and others. 
ll-ilSACTIS. An appellation by which fomie 
authors exprefs a genus of ftar-fiih compofed of a 
body and three rays only. 
TRISCyEDECACTIS. A name fometimes 
ufed to exprefs a kind of branched ftar-fifh, v»'ifh 
thirteen rays, each of which is divided and fubdi- 
vided into numerous others, 
TRISETiE, 
