CHITON. 9 



GRANULATED CHITON. 



5. Chiton granulatus. Ch. piceus, supra planus, punctis elevatis nume- 



rosis in series digestis, limbo lato, eoriaceo, spinoso: areis nigris al- 



bisque alternis. Linn. Gmel. p. 3205. 

 Pitchy, above flat, with numerous granulations disposed in regular rows ; 



border broad, coriaceous and spiny, with alternate white and black 



patches. 

 Chem. Conch. 8. t. 96. f. 806. 



This shell has eight valves ; it inhabits the American 

 ocean. 



PRICKLY CHITON. 



6. Chiton aculeatus. Ch. testa octovalvi striata, corpore subaculeato. Linn. 



Syst. Nat. p. 1106. Gmel. 3202. 

 Shell of eight striated valves, body somewhat prickly. 

 Chiton Nicobaricus aculeatus. Chem. Conch. 10. 1. 173. f. 1692. 

 Limax marina. Rumph. Mus. t. 10. f. 4. Barbut. t. 1. f. 2. 

 AmcBn. Acad. 8. t. 3. f. 1. Encyclop. Method, pi. 163. f. 6. 



An oval shell, rough on the upper part, with narrow 

 awl-shaped unequal prickles of a red colour ; the valves 

 are all striated transversely; the last valve is the 

 smallest: the margin covered with bristles. Inhabits 

 Asia, particularly the Red Sea. 



The specimen figured by Chemnitz, appears to be 

 coated with a red incrustation, so that the valves cannot 

 be seen. It is not uncommon for shells of this genus 

 to be disfigured by similar incrustations of different 

 colours, but chiefly white. The editors of the French 

 Encyclopedia have copied Chemnitz. Gmelin's variety 

 £. must be rejected, and also the reference to Edwards, 

 who has figured C. squamosus, not C. aculeatus. 



