MOLLUSCAN SHELLS. 291 



Barbatia decussata, Sowerby. Triacomalee ; Muttuvaratu Paar ; Gulf of Manaar. 



Barbatia iinbricata, Poll Gulf of Manaar ; Muttuvaratu Paar. 



Barbatia barbata, Linn. S. of Adam's Bridge ; Palk Bay. 



Barbatia (Barbata) fusca, Brug. Trincomalee ; Welligam. 



Barbatia (Barbata) lima, Peeve. Galle ; Trincomalee; Modragam ; Navakaddu 

 Paar ; Gulf of Manaar. 



Barbatia (Barbata) obliquata, Gray. Trincomalee. 



Anadara deshayesi, Hanley. Gulf of Manaar. 



Scapharca compacta, Reeve. Palk Bay ; Galle. 



Scapbarca pilula, Reeve. Trincomalee. 



Trisis (Parallelipipedum) tortum, Lamarck. Palk Bay. 



Cucullaea concamerata, Chemnitz. S.E. of Ceylon; Gulf of Manaar. 



Axinsa nodosa, Reeve. Aripu ; Gulf of Manaar. 



Limopsis multistriata, Forskal. S. of Adam's Bridge; Gulf of Manaar. 



Family: CAEDITID^. 



Cardita abyssicola, Hinds. Muttuvaratu Paar ; Modragam. 



Cardita antiquata, Poll S. of Adam's Bridge; Trincomalee; Galle; Aripu; 

 Gulf of Manaar. 



Cardita radula, Reeve. Mudalaikuli Paar ; Gulf of Manaar. 



Cardita variegata, Brug. Trincomalee ; Navakaddu. 



Family : CEASSATELLTD^. 

 Crassatellites radiata, Sowerby. Chilaw Paar ; Trincomalee ; Gulf of Manaar. 

 Crassatellites rostrata, Lamakck. Gulf of Manaar ; Aripu ; Trincomalee. 



Family: TBLDACNID^. 



Tridacna elongata, Lamarck. Trincomalee. 



Tridacna squamosa, Lamarck. Trincomalee. 



2 p 2 



