CHITON. 215 



Mr. Dennis, as well as Mr. Jordan, observed that 

 specimens found between tide-marks in Herm and 

 Jersey were very much finer than those dredged 

 in deep water off the last-mentioned island. This 

 species differs from C. fascicularis in being larger, 

 and usually longer in proportion to the breadth; the 

 central ridge is more prominent ; the granules are much 

 smaller and more numerous, and they are invariably 

 round instead of oval ; the girdle is broader, and clothed 

 with a thick pile ; the tufts are not so large or con- 

 spicuous ; and the notches are deeper. The young have 

 a remarkably elongated shape. 



The locality (Tenby) assigned by Brown to C. dis- 

 crepans belongs to C. fascicularis; but his statement 

 that the "papillae" are round can only apply to the 

 former species. Sowerby considered it (but erroneously) 

 the C. crinitus of Pennant, which is nothing more than 

 C. fascicularis. I believe Acanthochites communis and 

 A. carinatus of Eisso may be referred to C. discrepans. 



N*S- 3. C. HANLE'yi*,(Bean) j>|.r.f. 



C. Hankyi (Bean), Suppl. Thorpe's Brit. Mar. Conch, p. 263 ; F. &. H. 

 ii. p. 398, pi. htii. f. 2. 



Boor oblong: girdle rather narrow, tough, covered with 

 numerous short whitish spines ; those at the posterior side of 

 each plate, issuing from the corner where it overlaps the next 

 plate, are a little longer than the rest, and assume a some- 

 what tufted form. 



SHELL convex : plates shield-like, with a wide and deep 

 notch in front, moderately solid and opaque, not glossy : sculp- 

 ture, numerous but not crowded bead-like tubercles, arranged 

 in longitudinal rows, which appear in some specimens chain- 

 like ; these tubercles are smaller, finer, and closer on the crest 

 or back of each plate, and become coarser and irregular at the 



* Named in honour of Mr. Silvanus Hanley, one of the authors of 

 4 British Mollusca ' and other works on conchology. 



