79 MKI.VU.I, AND STANDF.N : MARINE MOI.LUSCA OF MAURAS, 



Fissurella (Glyphis) ruppelli Sow. — Some characteristic ex- 

 amples. Mauritius, Red Sea, Cape of Good Hope. 



Emarginula costulata I)h. — One Madras example, and three 

 from Homhay (Aherciomhie) hitherto unnamed in J. C Melvill's 

 rollectinn, with some slight doubt wr refer as above. Id. of Reunion. 



Subemarginula (Clypidina) notata L.* — Very prettily marked 

 with slutcy indigo concentric lines and dashes. Tryon remarks that 

 the habitat, West Indies, given by Adams is doubtful, and that it 

 belongs rather to an East Indian type, an opinion borne out by this 

 record of ours from Madras, as well as a former one from Bombay. 



Scutus I'f. corrugatus Rv. — Only small forms. Japan. 



Famu.v ACMyEIDjE. 

 Acmaea saccharina L. — Some fairly typical specimens. 

 .\mboyna to Japan ; l*iji Islands. 



Fam I i.v pa TELLJDA^. 

 Helcioniscus variegatus Rv. {=H. rota Gm. van). — Many 

 specimens, agreeing with Tryon's definition. Suez and Mozambique 

 (Rv.) ; Id. of Reunion ; Madagascar (Dall). 



Class POLYPLACOPHORA. 

 Family CHITONID.E. 

 Ischnochiton sp. — Two small species which have not yet been 

 worked out, but both are probably new to science. We shall hope to 

 .say more about them in a subsequent paper. 



Class SCAPHOPODA. 



Family DENTALIIDAi. 

 Dentalium octogonum Dh. — Several specimens. 

 Antalis fissura Lm. — One perfect example of this rare species. 

 Cadulus anguidens M. & S., vide an feu, p. 32. 



Class PELECYPODA. 



Order TETRABRANCHIATA. 



Family OSTREID.E. 



Ostrea denselamellosa Lischke. — Two characteristic examples, 



agreeing with Japanese specimens in the British Museum, and [. C. 



Melvill's collection. 



Family AA'OI\/IIDAl. 



Anomia humphreysiana Rv. — Only one valve, but charac- 

 teristic. 



Family LIMID.-E. 



Lima squamosa Lm. — Several, approaching the typical Red 

 Sea form. Red Sea, Mediterranean. 



