CHITON. 9 



exceeds three fifths of the length ; the valves bend slightly 

 upwards in the middle, and have their marginal triangles 

 marked with radiated strice, 



cerasinus. 22. Shell with smooth cherry-coloured 

 valves, and a white crenated border. 



Chiton cerasinus. Chemnitz, viii. p. 278. t. 94. f. 796. Gme- 

 lin, p. 3204. Wood's Conch, p. 17. 



Chiton, No. 3. Schroeter Einl. iii. p. 503. 

 Inhabits the coasts of Surinam. Chemnitz. 

 Shell about an inch and a half long, and two thirds as broad, of 



a uniform dark cherry-colour, with a narrow crenated white 



margin. The animal when dried becomes black. 



magellanicus. 23. Shell with eight thick brown 

 striated convex valves, and a blackish dorsal 

 band edged with white or yellow. 



Chiton magellanicus. Chemnitz, viii. p. 279. t. 95. f. 797 

 and 798. Gmelin, p. 3204. Wood's Conch, p. 18. t. 3. 

 f. 6. 



Chiton, No. 4. Schroeter Einl. iii. p. 503. 



Favanne, t. 74. f. A 1. Enc. Method, t. l60. f. 4 and 5. 

 Inhabits the Straits of Magellan. Chemnitz. 

 Shell about two inches and a quarter long, and rather less than 



half as broad ; margin broad, coriaceous, and covered with 



minute whitish spines ; inside black in the middle, and 



greenish on the sides bordered with brown. 



fuscus. 24. Shell with eight smooth brown cari- 

 nated valves, and white marginal teeth ; back 

 with triangular black spots. 



Chiton fuscus. Gmelin, p. 3204. Wood's Conch, p. 18. 

 Chiton, No. 5. Schroeter Einl. iii. p. 504. 

 Chemnitz, viii. t. 95. f. 799 and 800. Enc. Method, t. 

 160. f. 6 and 7. 



Inhabits the East Indian Seas. Chemnitz. 



Shell about two inches and a half long, and is rather nar- 

 rower in proportion to the length than C. magellanicus, 

 which it much resembles. The colour is brown, with obso- 

 lete lateral yellowish bands, and black triangular spots on the 

 dorsal ridge. It is said to have white lateral teeth, but in 

 Chemnitz's figure there only appears a narrow white margin 

 divided by distant dark striae. 



