POL! i'i \< "riioKA. 



:uva~ OOVOred with >li-ht radial in-.: n.L'<'s, which branch ..tl' toward 

 tin- rd_iros. Tin' colors arc suflici.-ntlv variable to ju-: name 



given ftboTe; several varirtics iii the collection 

 IXMIILT varic-atcd with rose, green and grey ; and one ated 



by Dr. Starrer, nearly white, with grey spots. (Sowb.) 







Chiton venioolor Sown., Mag. of Nat. HM., June, 1840, p. 292; 

 Conch. Illustr., f. 75 and f. 122 (var.). 



This seems to be an IschnockUon of the/rutiaMMJ irroiip, perhaps 



the same as divergens Rve. ; but it has not been m.-ntion< d by later 

 authors, and the present location of the type is unknown. 



CHITON PL.ATYMERUS Sowerby. PI. 10, fig. 7. 



Shell ovate, scarcely keeled, slightly convex, smooth, of a dark 

 chestnut color ; marginal ligament coriaceous ; anterior and posterior 

 valves, and lateral arese of the middle valves obtusely radiately 

 ribbed; central areae of the middle valves longitudinally .-triated; 

 valves broad. (Sowb.). 



I/* i/>!t< it 



Chiton platymerus SOWB. in Zool. Capt. Beechey's Voyage, p. 14'., 

 t. 41, f. 11. 



CHITON UNDULATUS Sowerby. PL 10, fig. 20. 



Shell oblong, rather convex, slightly keeled, marginal ligan 

 coriaceous, undulated ; valves smooth, of a dull, pale, gr'eni>h- 

 brown, light brown in the center. The specimen appears to have 

 been worn. It is probable that small bunches of hairs existed on 

 the marginal ligament. (Sowb., in Zool. Capt. Beechey's Voyage, 

 p. 149, t.41,f. 12). 



The recognition of this species is impossible without an examina- 

 tion of the original specimen, which is probably lo>t. It is not the 

 Ch. nndulatm of Quoy and Gaimard. The habitat is unknown. 



CHITON ZONATUS Blainville. Body elongated, suU-arimited ; 

 girdle moderate, covered with small tubercles, mealy. Shell of 8 

 valves entirely perfectly smooth ; the intermediates, the first larger 

 and as if trilobed in front, and unpiiculateat the summit : the others 

 increasing from the front backward, with the lateral areas indicated 

 by a cariuated line. Color whitish gray, varied agreeably 



