PLATE 56 



1. Chiton tuberculatus Llnn^. 3 inches, p. SS. 



2. Acanthopleura granulate Gmelln. Florida Keys. 



3. Ischnochlton paplllosus C. B. Adams. Florida K 



4. Ceratozona rugosa Sowerby. 40 mm. p. 26. 

 5a-5d. Ischnochlton florldanus Pllsbry. 41 mm. p. 23 

 6a, 6b, 6c. Lepldochiton alba Llnn^. New England. 13 mm 

 7a, 7b, 7c. Lepldochiton marmorea Fabrlclus. New England. 

 8a-8d. Lepldochiton ruber Lowe. New England. 20 mm. 

 9a, 9b. Ischnochlton llmaclformls Sowerby. 35 mm. p. 



10. Hamlnoea succlnea Conrad. 10 mm. p. 141. 



see 



