MULTIVALVES CHITON. 3 



sions, viz. those having- a scaly margin, as the C.squa- 

 mosus, &c. constitute the first division; others having 

 a coriaceous margin form the second division ; and 

 the third consists at present only of one species, 

 the C. spinosus, the margin of which is beset with 

 spines. 



The Chiton derives its name from its resem- 

 blance to a coat of mail (yriTwv). 



j> 



^Jct f ^J» - Di\noiow l. — Having a scaly margin. 



Scientific Name. Locality. C<ynvm(m Name. 



Squaniosus American Isles Scaly Chiton • 



Bistriatus • Striated • • • do • 



Fasciatus South America Banded • • • do • 



Viridis Green do • 



Tessellatus St. Thomas's Tessellated do • 



Sulcatus South Sea Isles ..-..-.... Furrowed • do - 



Maculatus East Indies Spotted • • • do • 



Marmoratus Florida Marbled • • do • 



Indus West Indies Indian do • 



Division II. — Havivg a coriaceous margin. 



The C. porosus and C. larvreformis of this division 

 deserve particular notice, as in some respects their 

 characters differ from those of the other species. The 

 valves of the C. porosus are perforated by a small 

 slit, and the ligament of the C. larvaeformis (which 

 in other species merely surrounds the margin) almost 

 envelops the whole shell, and gives it the appearance 

 of a caterpillar. 



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