24 CHITON. 



***Witk Six Valves. 



HISPID CHITON. 



36. Chiton hispidus. Ch. testa sexvalvi striata. Linn. Syst. Nat. 1. 



p. 1106. Gmel. 3202. 

 Shell of six valves striated. 

 Schroter Conch. 3. p. 493. t. 9. f. 8. 



This species is about the size of a filbert, of a blackish 

 grey colour, speckled with white, and very finely marked 

 with minute granulated striae. 



Inhabits America. 



SEA-GREEN CHITON. 



37. Chiton thalassinus. Ch. sexvalvi glabra ovali thalassina, supra linea 

 media dilutiori, limbo tenui hyalino. Linn. Gmel. p. 3206. 



Shell of six valves, smooth, oval, sea green, with a paler yellow line along 

 the back ; margin thin and hyaline. 



Schroter Einl. in Conch. 3. p. 509. No. 18. — Litterat. 4. p. 4. 



1. 1. f. 1. 



Described only by Schroter. It is rather convex, and 

 about half an inch long : its native country unknown. 



