INTRODUCTION 



CONCHO LOGY, 



ORDER I. 

 i*tultibalbe0. 



CHITON Coat of Mail. 



DESCRIPTION OF PLATE I. 



Dw. I. —Fig. 1. C. Squamosus. (Interior and exterior view.) 

 S//£^^^-f Div. II. — Fig. 2. C. Marginatus. ditto. 



Fig. 4. C. Fascicularis. ditto. 



Dw. Ill — Fig. 3. C. Spinosus. 



i^ X^' "^^^^^ consisting of several valves, arranged longitudinally on the 



back of the animal. 



THE genus Chiton ranks first in the classification 

 of shells, and no less than forty species are known; 

 some of which are beautifully marked, and some of 

 rare occurrence. From the peculiar appearance of 

 this multivalve, it is impossible to confound it with 

 any other genus; and it may be observed, that all 

 the species closely approximate each other. 

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