280 CEYLON PEARL OYSTER REPORT. 



Family : COLUMBELLID^E. 



Columbella propinquans, E. A. Smith. Jokkenpiddi Paar ; Trincomalee ; S. of 

 Adam's Bridge ; Donnau's Paar. 



Columbella (Pygmaea) flavida, Lamarck. Gulf of Manaar ; Jokkenpiddi Paar ; off 

 Mutwal Island. 



Columbella (Pygmaea) pardalina, Lamarck. S. of Modragam Paar ; pearl banks, 

 Gulf of Manaar. 



Columbella (Pygmaea) turturina, Lamarck. Cheval Paar; Donnan's Paar; S. of 

 Modragam Paar. 



Columbella (Pygmaea) tyleri, Gray. S. of Modragam Paar. 



Columbella (Pygmaea) versicolor, Sowerby. Off Galle. 



Columbella (Conidea) flava, Brug. Pearl banks, Gulf of Manaar; Cheval Paar. 



Family: NASSIDA 



Nassa arcularia, Linn. Trincomalee. 



Nassa nevilliana, Preston. Trincomalee. 



Nassa pulla, Linn. Pearl banks, Gulf of Manaar ; S. of Adam's Bridge. 



Nassa (Arcularia) thersites, Brug. Tampalakam Lake, Trincomalee. 



Nassa (Tritia) crenulata, Brug. Welligam Bay. 



Nassa (Alectryon) elegans, Kiener. Gulf of Manaar ; Trincomalee. 



Nassa (Alectryon) glans, Linn. Pearl banks, Gulf of Manaar. 



Nassa (Zeuxis) pallidula, A. Adams. Deep water off Galle. 



Nassa (Niotha) gemmulata, Lamarck. Pearl banks, Gulf of Manaar ; ofi Kaltura ; 

 deep water off Galle ; S. of Modragam Paar. 



Nassa (Niotha) marginulata, Lamarck. Trincomalee. 



Nassa (Niotha) splendidula, Dunker. Pearl banks, Gulf of Manaar. 



Nassa (Niotha) stigmaria, A. Adams. Pearl banks, Gulf of Manaar ; S. of Adam's 

 Bridge ; deep water off Galle, 



