Linn, names. Engl, names. Synon. Sj- Ref. 



4 pulchella orange-streaked M.Cab. 



5 elegans beaked 



6 ochroleuca ochre -coloured 



Habitat. 



MACTRA. MACTRA. 



1 cyprinus brittle Br.Mus. 



2 recurva recurved 



= 3 Campechensis grooved 



4 tenera thin spotted • 



5 similis rough coated 



6 subplicata wrinkle-skinned 



7 alata pale single-ridged 



8 Veneriformis Venus-shaped 



9 denticulata toothed 



10 subtriangulata truncated 



11 ovata oval 



1 2 Taprobanensis smooth, angular 



Peru, 

 u. 

 Carnpeachy. 

 Van Dieman's L. 



Tranquebar. 



u. 



Ceylon. 



DONAX. 



DONAX. 



1 Scalpellum slender Br.Mus. 



2 Stultorum mactra-shaped 



Indian Seas. 



