244 ONITHOCHITON. 



Specimens collected by Stearns are before me, from Enoshima, 

 where the typical form also is found. 



The type of Carpenter's unpublished Ornithochiton (/) caliginosus 

 is shown in figures 41-45 of pi. 54. It was described from specimens 

 in the Cuming collection from " China Seas," and C. B. Adams 

 collection from Hongkong. I have no doubt of its identity with 

 the L. japonica. The latter had not been published at the time 

 Carpenter wrote his diagnosis. 



Tapparone Canefri's note on Ch. defilippii is not sufficiently clear 

 for me to quote it without the mark of interrogation ; for he com- 

 pares with a species from Sydney which he calls Chiton piceus Gmel. 

 But although he refers to Keeve, fig. 70, I am disposed to believe 

 from his text, that what he really had from Sydney was Liolophura 

 ineana Gld. In this case, there can be little doubt that his defilippii 

 is a synonym of L. japonica. 



L. LOOCHOOANA Broderip & Sowerby. 



Valves subscabrous, the marginal areas radially granose. Girdle 



leathery, granose above, the grains elevated. Length 18f, breadth 



7f mill. A very pretty little Chiton, whose margin is covered with 



small grains, resembling very short, blunt spines. (Brod. & Sowb.) 



Shore of Loo Choo Is. (Belcher, Mus. Zool. Soc. Lond.) 



Chiton loo-chooanus BROD. & SOWB., Zool. Journ. iv, p. 368 (Oct. 

 1828 Jan., 1829.) 



This species is absolutely unrecognizable by the above descrip- 

 tion, but it was perhaps a member of the genus Liolophura which 

 the authors had before them. It is not mentioned or illustrated in 

 the " Zoology of Captain Beechey's Voyage." See Gray's reference 

 to these descriptions in the " Introductory Remarks," Zool. Beechey's 

 Voy., p. 103. 



Genus XIX. ONITHOCHITON Gray, 1847. 



Onithochiton GRAY, P. Z. S. 1847, p. 65, G&. Onythochiton, GRAY, 

 /. c., p. 169 (type Ch. undulatus) ; Guide Syst. Dist. Moll. B. M., p. 

 184. Ornithochiton CPR., in Dall, Proc. U. S. Nat. Mus. 1881, 

 p. 284. 



Valves exposed, polished, beaked, with indistinct lateral areas ; 

 eyes present and disposed in a ray on the forward part of each 

 lateral area and in numerous rays on the anterior valve. Interior 

 porcellanous ; sinus denticulate, angular ; insertion-plates pectinated 



