»HJLT1 VALVES. CHITON. 19 



The habitat or place of residence of these shells seems 

 to appertain, indiscriminately, to all parts of the globe. — 

 America affords the most, several are from the East In- 

 dies, Africa supplies a few, and the Northern seas contri- 

 bute their portion of the remainder. 



The Chiton, like the limpet, is often found adhering to 

 rocks and other substances, as shells, stones, madrepores, 

 corals, &c. and some of the northern species frequentthe 

 roots of sea weed. 



The following is a list of the different species, taken 

 from Gmelin's last edition of Linnaeus's Systema Naturae, 

 with the addition of some species which have been dis- 

 covered since the publication of that work. A similar list 

 will follow the general description of each genus. — The 

 species found on the British coasts are distinguished by 

 an asterisk. 



CHITON.— Coai of Mail. 



Hispidus. — Bristly. Fuscus. — Brown. 



Thalassinus. — Marine. Maculatus. — Spotted. 



Tuberculatus. — Knobbed. Marmoratus. — Marbled. 



*Crinitus. — Hairy. Granulatas. — Granulated. 



Aculeatus. — Prickly. Piceus. — Pitchy. 



*Fascicularis. — Banded. Indus. — Indian. 



Squamosus. — Scaly. Minimus. — Mealy. 



Punctatus. — Dotted. Cimex. — Banded. 



Ruber. — Red. Asellus. — Millipede. 



Albus. — White. Gigas. — Large. 



Cinereus. — Ash-colored. Icelandicus. — Icelandic. 



Bicolor. — Variegated. *Marginatus. — Marginated. 



Cerasinus. — Cherry-colored. *L3evis. — Smooth. 



Magellanicus. — Magellan. Amiculatus. — Imbricated. 



c 2 



