278 CEYLON PEARL OYSTER REPORT. 



Gyrineum (Argobuccinum) bituberculare (REEVE). Pearl banks ofi' Aripu, Gulf of 

 Manaar ; ofi' Mutwal Island ; S. of Modragam Paar ; S. of Adam's -Bridge ; deep 

 water off Galle ; off Mount Lavinia ; Trincomalee. 



Gyrineum (Argobuccinum) margaritula, DESHAYES. Pearl banks, Gulf of Manaar ; 

 deep water off Galle. 



Gyrineum (Argobuccinum) pusillum, BRODERIP. S. of Adam's Bridge ; Donrian's 

 Paar ; S. of Modragam Paar. 



Gyrineum (Argobuccinum) tuberculatum, BRODERIP. Pearl banks, Gulf of Manaar. 

 Distorsio cancellinus, KOISSY. N. of Gulf of Manaar; Trincomalee. 

 Distorsio cancellinus, var. decipiens, REEVE. Deep water off Galle. 

 Distorsio ridens, REEVE. Pearl banks off Aripu. 



FAMILY: PYEAMIDELLID^E. 

 Pyramidella acus, GMELIN. Trincomalee. 



FAMILY : COKALLIOPHILIim 

 Coralliophila violacea, KIENER. Donnan's Paar. 



FAMILY: MURICIDyE. 



Murex malabaricus, E. A. SMITH. Gulf of Manaar. 

 Murex nigrispinosus, REEVE. Deep water off Galle. 

 Murex ramosus, LINN. Palk Bay ; N. of Gulf of Manaar. 

 Murex rectirostris, SOWERBY. Deep water off Galle. 

 Murex tenuispina, LAMARCK. Deep water off Galle. 

 Murex ternispina, LAMARCK. N. of Gulf of Mahaar ; Palk Bay; off Galle. 

 Murex (Chicoreus) aculeatus, LAMARCK. N. of Gulf of Manaar; off Galle. 

 Murex (Chicoreus) adustus, LAMARCK. N. of Gulf of Manaar. 

 Murex (Chicoreus) adustus, var. huttoniae, WRIGHT. Off Aripu, Gulf of Manaar. 



Murex (Chicoreus) palmiferus, SOWERBY. Deep water off Galle ; Gulf of Manaar ; 

 S. of Mudragum Paar. 





