398 CHITONID^. 



C Hanleyi, Bean. 



Granules of the central areas moniliformly disposed ; liga- 

 niental border aculeated. 



Plate LXII. f5g. 2. 



Chiton Hanleyi, Bean, in Brit. Marine Conch, p. 262, f. 57. — Alder, Cat. 

 Moll. Nortliumb. and Durli. p. 73. — Thompson, Ann. Nat. 

 Hist, new ser. vol. iii. p. 352. — Loven, Ind. Moll. Scan- 

 dinav. p. 27. — Reeve, Conch. Iconica, vol. iv., Chiton, pi. 

 28, f. 187, 190. 



This rare and interesting Chiton was first discovered by 

 Mr. Bean, of Scarborough, who named it in honour of one 

 of the authors of the "British Molhisca." Although so 

 lately detected, it has since then been taken in Finmark 

 and other places in the North of Europe. 



It is small, of an oblong, or produced oblong, shape, 

 moderately elevated and angular above, and either of an 

 uniform whitish or tawny brown tint, but more frequently 

 slightly tinged with the latter colour. The valves are not 

 polished, and have their hinder edges only slightly retuse ; 

 the first is rather large ; the breadth at the fifth plate is 

 about five and a-half times the length of the exposed portion 

 of that valve. The dorsal ridge (the highest part of the 

 shelly plates) is neither distinguished by colour nor any other 

 particular from the rest of the surface ; the mucrones or 

 beaks are short but distinct ; that of the last valve is a 

 little rounded, and as it is not terminal, the posterior slope 

 is not abrupt. The sculpture is peculiar, and for the size 

 of the shell rather coarse. It consists, upon the central 

 areas, of rather distant and not very numerous longitudi- 

 nally disposed moniliform rows of granules, that become 

 larger as they recede from the middle of the valves ; upon 

 the anterior j)late, and upon the lateral areas, which are 



