The Marine Mollusca of Bombay. 43 



Fam. AVICULID-'E. 



Pinna (Linn.). 



P. nigra (Chem). 



A single specimen found attached by its byssiis to a 

 clump of stones. 



Fam. Mytilid/E, 



Mytilus (Linn.). 



M. smaragdiniis (Chem.). 



MODIOLA (Lam.). 

 M. {BracJiydontes) emarginata (Benson). 

 Shells belonging to this family rare in Bombay, but 

 commoner to the south. 



Fam. Arcid^.. 



Arca (Linn.). 



A. bistrigata (Dunker). 



A. {Scap/iarca, Gray) inaequivalvis (Brug). 



A. „ Japonica (Reeve), 



A. „ rJionibca (Bern.). 



A. {Anadara, Gr^iy) granosa (Lam.). 



A. {Barbatia, Gray) obliquata (Wood). 



A. „ lactea (Linn.). 



A. (A car, Gray) tenebrica (Reeve). 



Fairly largely represented in Bombay, and inaequivalvis, 

 granosa, and bistrigata all common, the last-named attached 

 to rocks and stones by a strong byssus. Obliquata occurs 

 commonly at Aden, but is rare at Bombay, while rhonibea 

 is likewise found at Ratnagiri. Lactea very common, and 

 also reported from Japan, Aden, Coast of Africa, Medi- 

 terranean, and British waters ; this includes A. Zebuensis 

 (Reeve). 



Fam. NUCULID.^. 



NUCULA (Lam.). 



N. Layardi (Adams). 



