108 CHITON. 



CHIONE. Megerle. Ctthee^a maculosa, (fig. 117, c.) sulcata, 

 circinata, &c. Auct. and other similar species. See Thesaurus 

 Conchylium, No. 12, and our figure. PL vi. fig. 117, c. 



CHISMOBEANCHIATA, Bl. The second order of the first 

 section of Paracephalophora Monoica, Bl. Those Mollusca be- 

 longing to this order which have shells, have them either internal 

 or external, but always scutiform, with depressed spires and 

 wide, haliotoid, oblique apertures, without a columellar lip pro- 

 perly so called. This order partly answers to the family Maceos- 

 TOMATA, in the system of Lamarck. It contains the genera 

 CorioceUa, Sigaretus, Cryptostoma, Oxinoe, StomateUa, and 

 Velutina. 



CHITON. Lamarck, (x^rov, an integument,) Fam. Phyllidiana, 

 Lam. Class, Polyplaniphora, Bl. — Descr. Oval, consisting of 

 eight arched valves arranged in a series across the body of the 

 animal and fixed in the skin which forms a rim around them, 

 sometimes scaly, spinose, or rugose, sometimes smooth. — Obs. 

 The genus Chiton, commonly called " Coat of Mail," from its 

 resemblance to jointed armour, remains to the present day in 

 exactly the same state with regard to its boundaries as that in 

 which Linnseus found it, and in which he left it. That illustrious 

 Naturalist placed it among the multivalves in his purely Con- 

 chological system, although the animal is totally dififerent from 

 the Cirripedes. The shells are prettily marked, and are found 

 attached to the rocks in all seas of Tropical and Southern 

 climates, but fossil species are almost unknown. Fig. 227, 

 C. Spinosus. The genus is divided in the British Museum 

 Synopsis, according to th^ character of the marginal integument 

 into the genera Lophuks, Ex. Chiton squamosus ; Eadsia, 

 Ex. Chiton Barnesii ; Callochitok, Ex. Ch. Isevis ; Ischno- 

 CHiLOK. Ex. Ch Textile ; LEPTOCHiTOisr, Ex. Ch. cinereus ; 

 CoNiciA, Ex. Ch. elegans ; Acanthapleusa, Ex. Ch. spinosa ; 

 Chitok, Ex. Ch. gigas ; Schizochiton, Ex. Ch. inscisus ; 

 CoEEPHEUM, Ex. Ch. Echinalus. Planiphoea, Oenitho- 

 CHITON, Enoplochiton, Mopalia, Kathaeina, Ceypto- 

 CHiTON, Cetptoconohus, Amicula, Acanthochetes, Chito- 



