IjS The Hijlory 0/ANIMALS. 
low colour without any variegation, and the whole furface is deeply furrowed : the 
furrows run tranfverfely in a femicircular diredion, and there are fmall and fharp 
ridges between them, r 
It is frequent on the coafts of the American ifiands, and is found alfo in fome parts 
of Europe. r 
Chama reticulata ovata rotunda . 
The roundijh , oval Chama , with a reticulated furface . 
This is two inches and a half in length from the hinge to the oppofite edge; and 
two and a quarter in diameter in the broadeft part, which is near the edge : the whole 
furface is covered with fomewhat deep, longitudinal furrows, with rounded ridges 
Handing very clofe between them ; and there are alfo a number of tranfverfe lines, 
though much fainter than the others, running in a circular direction, and forming* 
with the others, a kind of net-work : the whole fhell is of a dufky whitilh colour. 
We have it on fome of our own fhores, and thofe of the Mediterranean abound 
with it. 
Chama truncata margine fpinofo. WlttWUS ' 
The truncated Chama , with a fpinofe edge . 0? C0 HCt)& 
This is a Ihell of a very fingular figure ; it is about an inch and a half in length, and 
as much in diameter toward the larger end : the valves are both convex, and are 
deeply ftriated in a longitudinal direction : the hinge is placed at the extremity, 
where the ihell is rounded and prominent, and the end that fhould have gone the 
other way feems truncated or cut off: the opening is covered with a very elegant lip, 
propagated from each fide; thefe are wrinkled, and of a beautiful reddifh colour, 
with fome white among it; they do not unite perfectly in the middle, but leave an 
oblong aperture, and there Hand at the farther edge of each, or round about the trun¬ 
cated end of the fhell, a feries of long, {lender, and beautiful fpines. 
It is found on the fhores of the American ifiands, and, when perfed, is valued at 
a high rate by our collectors, but the fpines are ufually broken in the carriage. 
*■- • 
Chama truncata profunde flriata margine ferrato. 
The truncated\ deeply ftriated Cha?na , with a ferrated edge . 
This is about an inch in length, and as much in diameter ; the head is rounded 
and fmall, and one extremity is rounded, the other truncated, as in the former fpecies: 
the whole furface of the fhell is furrowed with deep lines, with a few broad ridges 
between them; the truncated end is clofed by two whitifh, wrinkled lips, leaving 
only a fmall, oblong aperture between them, and the edge is iurrounded by a demated 
or ferrated margin, not by a feries of loofe fpines, as in the former: the ground co¬ 
lour of the fhell is a dead white, but it is elegantly variegated with a glofiy brown. 
We have it both from the Eafl Indies, and the American illands. 
Chama truncata margine Icevi . 
V _ 
This is an elegant fhell; it is about an inch and a half long, and as much in dia¬ 
meter : the head, where the hinge is placed, is fmall and obtufe ; the whole furface of 
the fhell is fmooth, and has an elegant, natural polifh ; it’s colour is white ; the trun¬ 
cated end is large, and the lips leave but a fmall aperture between them; they are 
very much wrinkled, and are of a brownifh colour, with a ftrong tinge of violet. 
It is a native of the Eaft Indies; we have not yet received it from any other part 
of the world. 
The truncated Chama , with a fmooth edge. 
Chama 
