THE 



YOUNG CONCHOLOGISrS 



MOLLUSCA. 



GASTEROPODES. 

 LES PHYLLIDIENS. 



CHITONELLUS. 



Body creeping, elongated, with the middle of the 

 back adorned its whole length with detached 

 testaceous plates, the alternate ones principally 

 longitudinal ; sides naked. 

 Clevis. W. 1.39. 



CHITON. 



Body creeping, oval-oblong, convex, rounded at 

 both ends, and margined with a coriaceous 

 skin; the back covered with a longitudinal 

 series of testaceous plates, which are trans- 

 verse, imbricated, and mobile, 



C. SQUAMOSus. Olive; with eight semi-stri- 

 ated valves ; margin shagreened^ with light-greeii 

 and dark-olive scales. \\. E. M. 162. 5, 6. 



B 



