Bay of Bengal and the Arabian Sea. 7 



Chiton ceylanicus, sp. n. 



Testa C. canaliculato similis, sed areis centralibus inter liris puuc- 

 tatis, valva autica costis granosis circiter 36 ornata, cingulo 

 squamis minutis amicto. 



Longit. 14 mm., diam. 8. 



Hab. Off south coast of Ceylon^ 34 fath. 



This species is rather like C. canaliculatus , Quoy & Gaim.^ 

 but differs in the central areas being more finely Urate, 

 punctate between the lirse, and the scales on the girdle are 

 much finer. The valves are dirty white, here and there 

 stained and dotted with light ohve-brovvn, with a few darker 

 dots on the posterior edge of the anterior and central valves. 



Angasia tetrica, Carpenter. 



Angnsia tetrica, Carp., Pilsbry, Man. Conch, vol. xiv. p. 287, pi. Ixi. 

 figs. 



Hab. Off south coast of Ceylon, 34 fath. 

 The specimens from this locality agree exactly with the 

 variety calculosa from the Philippine Islands. 



Dentalium Shoplandi, Jousseaume. 



Dentalium Shoplandi, Jousseaume, Bull. See. Philom. 1894, vol. vi. 

 p. 103. 



Hab. Station 229, off Travancore coast, in 360 fath. {' In- 

 vestigator •") ; Gulf of Aden, 670 fath. {Jousseaume and Brit. 

 Mus.j. 



The ridges in this species vary from sixteen to about 

 twenty-two. None of the specimens, although not much 

 broken away towards the apex, exhibit any trace of a slit. 

 The largest example is 100 mm. in length and 12 in width. 



Dentalium magnificum, Smith. 



Dentalium magnijicum, Smith, Ann. & Mag. Nat. Hist. 1896, vol. xviii. 

 p. 371. 



Hab. Station 232, off Travancore coast, in 430 fath. 

 The riblets are finer and more numerous in this species 

 than in D. Shoplandi, and the apex is deeply slit. 



Xylophaga indica, sp. n. 



Testa X. dorsali similis, sed valvis sulco mediano aequaliter bi- 



partitis, lira interna seque centrali. 

 Diam. 12 mm., longit. umbone ad marginem veutralem 12. 



Hab. Station 233, off Andamans, 185 fath. 



