2 CHITON. 



the present species ; but it is more like Oniscus Entomon, 

 for which it is also quoted by Linnaeus. 



bjstriatus. 2. Shell with eight doubly striated 

 valves, and the margin scaly. 



Chiton bistriatus. Wood's Conchology, p. 7. 

 Chiton squamosus. Chemnitz, viii. p. 171, t. 94, f. 788 

 to 791. 



Inhabits 



Mr. Wood has, with great propriety, separated this species 

 from C. squamosus, and has given die following description: 

 " The two extreme valves are greenish ash colour, dotted 

 with brown ; the middle valves are red brown, with double 

 curvilinear striae, of equal strength from the dorsal ridge to 

 the margin. The marginal triangles are marked with dark 

 brown spots, on a light bluish ground ; margin scaly, fas- 

 ciated with bistre." 



fulvus. 3. Shell with eight valves and whitish 

 dotted striae ; margin coriaceous. 

 Chiton fulvus. Wood's Conchology, p. 7 t. 1. f. 2. 

 Chiton aculeatus, Var /?. Gmelin, p. 3202. 

 Chemnitz, x. t. 173. f. 1691. Enc. Method. 1. 16 J, f.4 

 and 5. 

 Inhabits the coasts of South America ? Wood. 

 Shell three quarters of an inch or an inch long, and about half 

 as broad, of a yellowish brown colour ; the striae in the upper 

 of the two triangles, into which both sides of the valves are 

 divided, appear beaded when magnified; but the lower tri- 

 angles are simply striated. 



piceus. 4. Shell with eight smooth valves, and the 

 margin coriaceous and spiny. 



Chiton piceus. Gmelin, p. 3205. Wood's Conch, p. 8. 



t. 1. f. 3. 

 Chiton, No. 9- Schroeter Einleitung, iii. p. 505. 

 Chemnitz, viii. t. 96, f. 807 to 810. 



Inhabits the Red Sea and West Indian coasts. Chemnitz. 



Shell an inch and a half or two inches long, and about two 

 thirds as broad ; colour pitchy, varied with a little white and 

 a tinge of green, and the inside is black in the middle with 

 greenish sides. The whole shell has a rude, unfinished ap- 

 pearance, and Chemnitz says it is sometimes, though rarely, 

 found with only six or seven valves. 



