COR 
. - Coot of Hudson's Bay. The extremity of 
the upper mandible of this bird iS a little crooked ; 
the neck is partly of a flefhy colour; the head is 
cinereous ; the body is brown above, and white 
below; there is a white fpot on each wing; and the 
legs are brown. 
- COPROPHAGOS. The appellation given 
by many authors to the common y el lowifli- co- 
loured fly found on human excrements. There 
are various fpecies feen on the ordure of different 
animal" ; and they are thence called merdivorce. 
COQUALLIN. A beautiful animal of the 
fquirrel kind, very remarkable for the variety of it's 
colours. It's belly is of a bright yellow; it's head 
and body are variegated with white, black, brown, 
and orange ; and it is defliitute of any tuft at the ex- 
tremity of it's ears. This animal, however, feems in- 
capable of afcending trees like the reft of it's clafs. 
COR MARINUM. The name of_a clafs of 
echini marini; the characters of which are, that the 
anus is placed on the fide of that point of the fliell 
which appears as if cut off; and that the moutli, 
which has two lips, is placed in the third region 
of the axis of the bafe. 
■-. COR VENERIS. An appellation given by 
conchologifts to a very elegant fpecies of the cor- 
diform'is, or lieart-fheil, which approaches nearer 
in fhape to a real heart than the bucardium, or any 
other fhell of this genus. There are only three 
known fpecies of the Cor Veneris; niimely, the 
denticulated one, with very elegant rofe-coloured 
fpots; the white boat-fhell, furrowed internally ; and 
the little rofe-coloured kind; but they are all ex- 
tremely elegant and valuable fhells. 
.- CORACINUS. A fifh caught in the Medi- 
terranean fea, called by fome naturalifts fivi^^na; 
and by Aldrovandus and Salvian, umbra. It's co- 
lour refembles that of the common tench, but it is 
fhaped fomewhat like the perch. It's fcales are 
fmall; it's mouth is of a moderate fize, but well 
furnillied with teeth ; and it's tail, when extended, 
is of a roundifli figure. The extremities of tlie 
rays or nerves of the tail-fin are black; and the 
other fins are alfo of that colour. 
CORACIUS. A Linnfean term for the pica, 
or pye. In that great naturalift's fyftem, this bird 
makes a diftindt genus; the diftingnifliing charac- 
ter of which is, that the inner tail-feathers grow 
gradually longer and longer. 
This ioird likewiie obtains the name of pyrrho- 
corax; and, inEnglifh, is called the Corniili chough. 
It is fliaped like the jack-daw, but rather refembles 
the comm.on crow in it's fize ; and the beak is long, 
red, and fomewhat incurvated at the point. It fre- 
quents rocks and ruined buildings about the fea- 
lliores; and is found about the high cliffs all along 
the v/eftern fliores of England. It's voice is very 
fimilar to that of the jack-daw, but hoarfer and 
rougher. 
CORAX PISCIS, or CROW-FISH. An 
anim.al of the cuculus kind, very much refembling 
the fwallow-fifh in it's fhape. The bones which 
cover the gills of this fifh all terminate in fharp 
fpines. See Flying-Fish. 
CORBEIL. The name of a curious fpecies of 
the chama. It is of the larger kind ; and deeply 
ttriated, both longitudinally and tranfverfely, form- 
ing a kind of reticulated furface, in imitation of 
bafi<:et-v/ork. 
CORCULUS. An appellation given by fome 
authors to a fmall fpecies of cordiformis, or heart- 
fhell, of a rofe-colour. 
COR 
CORDYLA, or CORDYLUS. A name by 
which fome naturalifts exprels the thynnus, or tun- 
ny-fifli, while in it's adolefcent ftate. 
' CORDYLUS. A fpecies of lizard, called alfo 
uromaftyx and caudiverba. It is larger than the 
green lizard ; and the tail is rounded and divided 
into a number of circles covered with fcales, which- 
coat them over like the tiling of a houfe. 
COREGONUS. A genus of fifties of the mala- 
copterygious or foft-finned kind; the chara6lers of 
which are thefe: the branchioftege membrane on 
each fide contains feven, eight, nine, or ten bones j 
the pinna dorfi is placed nearer the fnout than the 
ventral fins; and the teeth are fo minute as to be 
fcarcely perceptible in feveral of this clafs. 
Artedi enumerates four fpecies of this genus. 
The term Coregonus is compofed of Kore, the 
Pupil of the Eye; and Gonia, an Angle or Corner; 
and is applied to this genus of fifties from the fin- 
gular ftru(fture of this part of the eye, the pupil 
running out into an acute angular corner in the 
anterior part in all the fpecies. 
CORETT. A large Eaft Indian fifii of the 
tunny kind, fuppofed by many to be the fame with 
the common tunny. It grows to the length of fix 
or feven feet ; the eyes are large, and their irides 
yellow ; the tail is broad and forlced, and of a yel- 
lowifti-green colour; the belly-fins are yellowifh; 
and the belly itfelf is a fine bright glofty blue, with 
a filvery caft. This fifli, which is generally caught 
v/ith hooks, is efteemed very delicious. 
CORMORANT. A large fea-bird of the or- 
der of anferes, called by authors corvus aquaticus, 
or the fea-raven. This bird is about three feet 
four inches in length; the extent of it's wings is 
four feet two ; and it's weight exceeds feven pounds. 
The bill is duficy, and five inches in length; the 
bafe of the lov/er miandible is overfpread with a 
naked yellowifh covering, which extends under the 
fls;in, and forms a kind of pouch; and a loofe f!;in 
of the fame colour reaches from the upper mandi- 
ble round the eyes and angles of the mouth. The 
head and chin are a dull black ; but under the chin 
of the male the feathers are white, and the head in 
that fex is adorned v/lth a fliort, loofe, pendent 
creft. The coverts of the wings, the icapulars, 
and the back, are of a deep green, edged with 
black, and gloffed with blue; the quill-feathers 
and the tail are duflcy; the breaft and belly are 
black; and in the midft of theiaft there is frequently 
a bed of white. The legs are ftrong, fliorc, and 
black, the middle claw being ferrated on the in- 
fide; and the irides are of a light afli-colour. 
Notv/ithftanding the apparent heavinefs of the 
ftruflure of Cormorants, few birds are more pow- 
erfully predaceous. As foon as winter approaches, 
they are feen difperfed along the fea-fliores, en- 
tering the mouths of frefh -water rivers, and threat- 
ening deftruftion to all the finny tribe. They are 
uncommonly voracious ; and their digeftion is fo 
aftonifliingly rapid, that their appetites feem to be 
always craving, yet never to be fatisfied. This 
gnawing fenfation, hov/ever, may probably be fti- 
mulated by the great quantities of fmall worms 
lodged in their inteftines, and which their unceaf- 
ing gluttony contributes to engender. 
Thus formed with the groffeft appetites, this 
bird, even in it's moft healthful ftate, lends forth a 
moft rank and offenfive fmell, by far more foetid 
than putrid .flefh. It's form is difagreeable, it's 
voice is hoarfe and croaking, and all it's qualities 
are obfcene. It cannot then furely appear ftrange, 
that 
