150 
MOLLUSCOUS ANIMALS. 
Chiton stramineus, t. 41./. 13. Sowerby, Zool. Proc. Apr. 1832. p. 104.— Conch. 
Illustr. Chiton./. 28. 
Inhab. Found at Chiloe. 
Chiton vestitus, t. 41./. 14. Sowerby, Zool. Journ. iv. p. 368. 
Inhabits the coasts of the Arctic seas. In the specimen represented the points of the reniform valves are 
much eroded ; that of the Zoological Society displayed them covered with minute granules. This is probably 
the same as Ch. Emersoni of Conthony in Boston Journal of Natural History, vol. II. 
Chiton tunicatus, t. 41./. 15. Wood's General Concholoyy and Index Testa- 
ceoloyicus. 
In the specimen figured by Wood the exposed part of the valves is nearly white, having been eroded so 
as completely to have lost all their natural surface ; in the present individual they are only eroded at the very 
points, so that they exhibit the natural character of the exposed part of the valves, which are nearly smooth, 
of a dark grey colour, with darker concentric lines. 
Chiton articulatus, t. 41. /. 16. Sowerby, Zool. Proc. March, 1832. p. 59.— 
Conch. Illustr. Chiton, f. 18. 
Inhabits under stones at St. Bias in the Bay of California. 
Chiton setosus, t. 41./. 17. Sowerby, Zool. Proc. 1832. p. 27. — Conch. Illustr „ 
Chiton./. 19. 
Inhabits Guacomayo on the coast of Central America. 
Chiton RUGulatus, t. 41./. 18. Sowerby, Zool. Proc. 1832, p. 58 .—Conch. Il- 
lustr. Chiton./. 42. 
Found at Puerto Portrero, and on Inner Lobos Island, in Central America. 
Pecten pulcherrimus, t. 41./. 1,2. 
Shell nearly equivalve, unequal-eared, very flat, white, one valve with a pink apex, mottled with rose 
colour, and having nine radiating ribs, one of which at each end is strongly spinose, the seven intermediate 
ones being broader and covered with transversely fringed elevated scales ; the other valve having ten radiating 
ribs, one of which at each end is spinose, the eight intermediate ones being broader and covered with transverse 
elevated, slightly interrupted scales ; interstices of the ribs deep in both valves ; dorsal lines spinose in both 
valves ; ears radiately grooved. 
This is a small, but extremely beautiful and delicate species 
Chama echinata, t. 43./. 9. Broderip, Trans. Zool. Soc. vol. I. p. 306. t. 39./ 
5, 6, 7. 
When young this shell is covered with numerous small pointed scales. The specimen here represented 
is a very old one, the outside of whose upper valve has been very much disfigured by Lithodomi. 
