The Hiflory fl/ ANIMALS 
^ t ^ r tiVC ^ ec ^ terranean J an ^ ^ as been found alfo in great perfection on 
lilC JLI1111 1X101 Co® 
Chama labiata juhfphczrtca Jlriatd . 
The roundijh , ftriated , labiated Chama . 
. This is one of the moft fingular of the Chamse: it has, in general, the ftrudture of 
the truncated ones, but the truncated part is not flat or ftraight as in them, but fwells 
into a roundnefs, and the oppofite part of the fliell is fhorter than in any of the others • 
by this means it departs greatly from their figure, and approaches toward roundnefs * 
the valves are very gibbofe alfo, and the fhell is almoft as deep as it is long or broad * 
it is all over of a dufky white; the whole furface, except the lips, is firiated tranf- 
veriely ; the lines are fmall, clofe, and elegant; the lips are almoft fmooth ; what 
inequalities they have are owing to fome oblong wrinkles, but thefe are faint, and are 
often quite wanting. 
It is found on the fhores of fome of the American iflands, but it is very rare in 
our collections. 
The other fpecies of the Chama are, i. Of the oblong and tranfverfely ftriated 
kind 5 i. The elegant, very lightly ftriated, brown and black Chama. 2. The ele¬ 
gant, flat, purple and white Chama. 3. The elegant, brown and white, flat Chama. 
4. The pale brown Chama, with narrow, black ftreaks. 3. The deeply furrowed 
Chama. 
2. Of thofe which are oblong, and are longitudinally ftriated or collated, there 
are, j. The grey, lightly ftriated Chama. 2. The elegant amethyftine Chama. 3. 
The lightly ftriated, yellow Chama. 4. The almoft fmooth, red Chama. 5. The 
beautifully variegated, finely ftriated Chama. 
3* Of thole which are of a figure approaching to round, and are equilateral, there 
are, 1. The lightly ftriated, fpherical, whitifh Chama. 2. The reticulated Chama, 
or bafket-fhell. 3. The reticulated and granulated Chama. 4. The common, tranf¬ 
verfely ridged, deep Chama. 3. The rugofe or deeply furrowed, brown Chama. 
6. The fmooth Chama, with irregularly angulaied lines of black. 7. The elegantly 
pun&ated Chama. 8. The clouded brown and white Chama. 9. The red and 
white, fafciated Chama. 10. The thin, plain, yellow Chama. 11. The elegantly 
fafciated, violet Chama. 12. The white, thick, plicated Chama. 13. The fnow- 
white, rounded Chama, called Chamapalodes by authors. 14. The fmooth, fome- 
what flatted Chama, called by Bellonius the Chama Pelorides. 15. The blackifh, de- 
prefied Chama, called the Chama Glycymeris of iTlian. 16. The very deeply fur¬ 
rowed, rounded Chama, called the Chama Trachea. 17. The oblong, fmooth, 
brown and white Chama, called by fome the Chama Pepeiata. 18. The fmooth, 
variegated Chama, called the Chamelaia. 19. The rough Chama, called the Ty- 
ger’s-tongue Chama. 20. The fine, thin, white, reticulated Chama. 
4. Of thofe which are truncated and inequilateral, befide the fpecies defcribed above, 
there are, 1. The elegant violet-coloured Chama, with an oval aperture. 2. The 
grey-lipped, fmooth Chama. 3. The brown-lipped, fmooth Chama. 4. The trun¬ 
cated Chama, with fmooth lips, and longitudinal ftriae on the body. 5. The fmooth- 
lipped, truncated Chama, with tranfverfe ridges. 6. The large, fmooth, truncated 
Chama, of an elegant purple within. 7. The large, grey, truncated Chama, with a 
mixture of purple and white within. 8. The fmall, grey Chama, with the infide of 
a pearly white. 9. The varioufly, ftriated, truncated Chama. 
M Y T U L U S. 
f I ' H E Mytulus is a fhell compofed of two valves, of an oblong figure, and fhut- 
ting clofe all the way : the valves are both convex, and of a fimilar fhape. The 
animal inhabiting it is a Tethys. 
Of the Mytuli fome are of a conic figure, others oblong, and equal at both extre¬ 
mities; fome are fmooth on the furface, fome rough; and fome are much deeper than 
others. 
