He Hiftory «/ A N I M A L S # 
Porcellana albida ., utrinque roftrata ., intus flavefcens . 
w&te Porcellana ., jfcZfcw and beaked at each extremity . 
. This is of an oblon g % ure » and very gibbofe: it’s length, including the two roftra 
is about three inches, and it’s diameter, in the middle, is nearly two inches: it’s co - 
lour is white on the outfide, without any variegation, and yellow within « the mouth 
is large, and is continued in the form of a roftrum or fnout at each end. 
We have it from the African coaft, and alfo from fome parts of the Eaft Indies. 
Porcellana oblonga , utrinque roftrata , oculata . 
He oblong ., oculated Porcellana , rojlrated at each 
extremity . 
3Ct)e 3ttgtt& 
Ojetl- 
This is ah extreamly elegant (hell j it Is about three inches long, two inches in dia¬ 
meter, and fomewhat lefs than that in height, being lefs gibbofe than mod of the 
other kinds; the mouth is wide, and it’s lips are continued at each extremity, beyond 
the verge of the (hell, fo as to form each way a kind of broad and fhort beak: the 
ground colour of the fhell is yellowifh, but there are three brown fafciae running 
over it of confiderable breadth, but not very diftind or deep ; and rhe whole furface 
is ornamented, as well on thele fafciae as elfewhere, with multitudes of round fpots, 
compofed of an out-line not filled up, and refembling the eyes, which we fee on fome 
of our butterflies wings. 
We have it from the coaft of Africa and elfewhere 3 very fine ones have lately been 
brought from the Eaft Indies. 
Porcellana claviculata fufca , albo variegata. 
Ihe claviculated Porcellana , with white variegations . 
This is a very elegant fpecies: it is about two inches and a half in length, and 
nearly as much in diameter, and it’s back is very gibbofe: at the head there is a fhort 
clavicle placed a little above the extremity of the mouth, and compofed of about four 
imperfed volutions; the other end of the fhell is obtufe: the general colour is brown, 
but there are fome elegant and irregularly undulated lines of white on it, which, with 
the other fpots and clouded marks of the fame colour, give the whole furface very 
much of the appearance of a map; the mouth is dentated or fpinated, and about it 
the fhell is paler than elfewhere, often whitifh. 
We have this from the Eaft, and from the coaft of Africa. 
Porcellana fubccerulea fafciata , roftrata et claviculata . 
The bluijh , fafciated Porcellana , with a clavicle at one end , and a beak 
at the other . 
This is about two inches in length, and nearly an inch and a half in diameter, and 
is very gibbofe and rounded on the back: at the head there ftands a fmall conic clavi¬ 
cle, formed of about four volutions; the two lower ones imperfed, and terminating 
in a fharp point: at the other extremity there is a very fhort but broad roftrum ; the 
general colour of the fhell is bluiflh, but there are on it two, or fometimes three, faf¬ 
ciae, of a greyifh brown. 
We have it from the fhores of many of the American iflands, and fometimes from 
the coaft of Africa. 
« * 44.-., ,_ 
Porcellana fubovata y utrinque longijfttme roftrata . 
L The fuboval Porcellana , with a long roftrum at each extremity . 
This is a fmall fpecies; it’s body is of an oval, or nearly oval, figure, about three 
quarters of an inch in length, and half ari^inch in diameter, and confiderably elevated 
or gibbofe on the back; at each extremity there is a roftrum or beak of two thuds 
of the length of the body, and of the thicknefs of a large ftraw 3 the colour of the 
whole 
