278 CEYLON PEARL OYSTER REPORT. 



Gyrineuin (Argobucciuum) bituberculare (Reeve). Pearl bunks off Aripu, Gulf of 

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

 water off Galle ; off Mount Lavinia ; Trincomalee. 



Gyrineum (Argobucciuum) margaritula, Desha yes. Pearl banks, Gulf of Manaar ; 

 deep water off Galle. 



Gyrineum (Argobuccinum) pusillum, Broderip. S. of Adam's Bridge; Donnan's 

 Paar ; S. of Modragam Paar. 



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



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



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



Distorsio ridens, Reeve. -Pearl banks off Aripu. 



Family : PYRAMIDELLULE. 

 Pyramidella acus, Gmelin. -Trincomalee. 



Family : CORALLIOPHILIILE. 

 Coralliophila violacea, Kiener. Donnan's Paar. 



Family : MURICID.E. 



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 Manaar ; 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; 

 8. of Modragam Paar. 



