CHITON. 11 



C.fasciatus, as figured by Chemnitz, and sometimes uni- 

 form, or in patches, as in Knorr. The colours are black, 

 or greenish, or deep red-brown on a lighter ground. 

 The scaly margin is stained with blackish, or deep blue 

 and white. Inhabits the American ocean. 



The variety @- of Gmelin, quoted from Schroter, is 

 too indistinct to be admitted. 



SPOTTED CHITON. 



9. Chiton maculatus. Ch. testa octovalvi glaberrima, intus thalassina, mar- 



gine squamis ex cinereo albis vestita, valvis mediis anterius, nonnullis 



utrinquefusco maculatis. Linn. Gmel. p. 3205. 

 Shell of eight valves, smooth, within sea green, margin covered with 



greenish white scales ; middle valves on the fore part, and some of 



them on both sides spotted with brown. 

 Chem. Conch. 8. t. 95. f. 802. 



The valves of this species are covered with numerous 

 small brown spots, or stains, besides a band of a deeper 

 colour, which runs on each side the dorsal ridge. 

 Chemnitz figured this shell from a specimen in his own 

 collection. It is rare, and its country unknown. 



COATED CHITON. 

 PL 2./. 1. Mr. Jennings. 



10. Chiton tunicatus. Ch. testaoctovalvi Icevi, valvis albis, supra membranis 



suborbicularis, limbo coriaceo reflexo. 

 Shell of eight valves, smooth, valves white, above the membrane roundish, 



margin coriaceous and turned back. 



This singular shell makes a very different appearance 

 from any other species of the genus. The valves, 

 instead of being wholly visible, are coated half way 

 upwards with a black membrane, which is reflected from 



