MOLLUSCAN SHELLS. 289 



Pecten irregularis, SOWERBY. Galle. 

 Pecten layardi, REEVE. Off Negombo, 20 fathoms. 

 Pecten miniaceus, REEVE. Galle. 

 Pecten pallium, LINN. Gulf of Manaar. 

 Pecten pseudolima, SOWERBY. Modragam Paar. 

 Pecten pyxidatus, BORN. Mudalaikuli Paar ; Muttuvaratu Paar. 

 Pecten senatorius, GMELIN. Trincomalee. 

 Pecten singaporinus, SOWERBY. Trincomalee. 

 Pecten squamatus, GMELIN. Galle. 



Pecten (Pallium) pes-anatis, REEVE. Galle ; Modragam ; Gulf of Manaar. 

 Pecten (Pallium) plica, LINN. Trincomalee ; Modragam ; Gulf of Manaar. 

 Pecten (Pallium) velutinus, SOWERBY. Off Mutwal Island. 



FAMILY: AVICULID^, 



Avicula inquinata, REEVE. Off Negombo, 20 fathoms. 

 Avicula iridescens, REEVE. Off Negombo, 20 fathoms. 

 Avicula zebra, REEVE. Gulf of Manaar. 

 Margaritifera vexillum, REEVE. Palk Bay ; Trincomalee ; off Negombo. 



Margaritifera vulgaris, SCHUMACHER. Trincomalee; Gulf of Manaar, and many 

 other localities (vide " Narrative"). 



Margaritifera margaritifera (LiNN.). Gulf of Manaar. 



Malleus vulgaris, LAMARCK. Off Mount Lavinia ; W. of Pantura ; Trincomalee ; 

 Gulf of Manaar. 



Vulsella rugosa, LAMARCK. Gulf of Manaar ; Trincomalee. 

 Perna fimbriata, REE\E. Gulf of Mauaar. 

 Pinna attenuata, REEVE. Gulf of Manaar. 



Pinna bicolor, CHEMNITZ. Trincomalee ; Chilaw Paar ; off Negombo ; Gulf of 

 Manaar. 



2 P 



