148 
MOLLUSCOUS ANIMALS. 
Patella argentata, t. 39./. 7. 
Shell depressed, conical, somewhat elliptical, radiately ribbed, dark yellowish brown outside, silvery 
white within : apex slightly anterior ; the ribs rather irregular and occasionally rugose : margin slightly and 
irregularly dentated. 
Found on rocks at Valparaiso and other parts of the coast of Chili. 
Patella Mazatlandica, t. 39./. 12, 12. 
Shell rather depressed, conical, somewhat elliptical, radiately ribbed, with nodulose ribs, of a dull 
greenish gray, frequently with black spots outside, whiter inside and somewhat pearly, sometimes with a 
white and sometimes with a dark brown center : apex slightly anterior ; margin irregularly toothed. 
Inhabits the coast at Mazatlan. 
This species varies much in the number and closeness of the radiating ribs, as well as in the size of the 
nodules upon them. It sometimes measures nearly three inches in length. 
Fissurella latimarginata, t. 39. /. 8. Sowerby, Zool. Proc. 1834, p. 126. 
Conch. Illustr. Fissurella, f. 69. 
Inhabits — found on the rocks at Valparaiso and Iquiqui.. 
Fissurella crassa. Lam. t. 39./. 9. 
F. crassa. Lam. Hist. nat. des anim. sans vert. vi. Part YL.p. 11. Sowerby, 
Conch. Illustr. Fissurella, f. 9, 11. 
F. Clypeiformis. Sowerby, Tank. Cat. cipp. p. vi. 
Found abundantly at Valparaiso. 
Infundibulum radians, t. 39. /. 10. 
Trochus radians. Lam. Hist. nat. des anim. sans vert. VII. p. 11. — Encycl. 
method, t. 445./. 3. 
Calyptraea radians. Nonnull. 
Found abundantly at Valparaiso, Coquimbo and at other places on the shores of the Pacific. The locality 
given by Lamarck, namely, the Antilles near Guadaloupe, must be erroneous. 
Infundibulum radians. Var. t. 39. /. 11. 
A remarkable variety with an unusually elevated spire. 
CALYPTRiEA strigata, t. 39. /. 13. Broderip, Trans. of Zool. Soc. I. pi. 28. /. 
12. p. 206. 
Chiton Hennahi, t. 40./. 1. Gray, Spicileyia Zooloyica, p. 6. no. 11.' — Sowerby, 
Conch. Illustr. Chiton, f. 1. 33. 
Found abundantly in the Bay of Callao. 
Chiton Janeirensis, t. 40./. 2, Gray, Spicileyia Zooloyica, p. 6. no. 9. t. 3. /. 8. 
Inhabits Rio Janeiro. 
