50 Mr. J. C. Melvill and Mr. Abercrombie on 



T. Hoviala, Schum.) ala (Hanley). 



T. „ simtata (Spengler). 



T. {Angtihis, Megerle) rtibi^a (Desh.) = cu/fa (Hanley). 



T. „ nibella (Desh.). 



T. {Moera, H. and A. Adams) kchriograinvia (Melvill) 

 sp. nov. 



Gastrana (Schum.) 



G. Briigieri (Hani.) 



G. {Metis, H. and A. Adams) edentula (Spen.). 



= angiilata (Chem.). 



G. „ polygona (Chem.). 



G. {Macojiia, Leach) truncata (Jonas). 



Specimens of this large family abound in Bombay 

 waters, and the first four are very common. G. edetitida 

 and M. truncata are equally plentiful. T. rubra and rubella 

 seem more plentiful to the south, as we obtained many 

 specimens from Ratnagiri. Of G. polygona only a few valves 

 were found after rough weather. We have another small 

 orange pink shell belonging to this family, but as it appears 

 to be young, we await further specimens before attempting 

 to differentiate it. 



Fam. SCROBICULARIID.E. 



Abra (Leach) = Syndosmya (Recluz). 

 A. opalina (Hinds). Rare. 



Semele (Schum.) = Amphidesma (Lam.). 



^. cordiforrnis (Sowb.). 



6". regular is. (Sm,). 



vS". cordiforrnis is common in muddy places, though 

 described by Reeve as a shell of extreme rarity. Of 

 regidaris we have only one valve, which appears to agree 

 with specimens of this name in the British Museum, though 

 it is also allied to scabra (Hanley). 



