276 CEYLON PEARL OYSTER REPORT. 



Cypraea ocellata (LiNN). S. of Adam's Bridge ; Doiman's Paar ; S. end of Cheval 

 Paar ; off Galle ; Trincomalee ; S. of Modragam Paar ; off Aripu. 



Cypraea onyx (LiNN.), var. adusta (CHEMNITZ). Pearl banks, Gulf of Manaar. 



Cypraa tigris, LINN. Gulf of Manaar. 



Cypraea vitellus, LINN. S. of Modragam Paar ; Trincomalee. 



Cypraea ziczac, LINN. S. of Adam's Bridge. 



Trivia annulata, GRAY. S. of Adam's Bridge. 



Trivia brevissima (SOWERBY). Deep water off Galle. 



Trivia cicercula (LiNN). Trincomalee. 



Trivia globosa (GRAY). From stomach of Astropecten, off Chilaw, 10 fathoms. 



Trivia nucleus, LINN. Gulf of Manaar ; Trincomalee. 



Trivia fibula, KIENER. Two " live " examples from Gulf of Manaar. We quite 

 agree with Mr. J. M. WILLIAMS, to whom we submitted these specimens, that they 

 are not the same as Trivia globosa (GRAY). 



Trivia rubinicolor (GASKOIN). S. of Adam's Bridge. A dead shell, more like a 

 fossil, as recently-dead Trivice are invariably glossy or polished, but Mr. WILLIAMS 

 identifies it without any doubt as this species, 



Trivia staphylaea (LiNN.). S. of Adam's Bridge; Trincomalee. 

 Trivia staphylaea, var. limacina, LAMARCK. S. of Modragam Paar. 

 Ovula (Volva) volva, LINN. Pearl banks, Gulf of Manaar. 

 Amphiperas pyriformis, SOWERBY. S. of Modragam Paar. 



FAMILY: DOLILD^E. 



Dolium maculatum, LAMARCK. Gulf of Maiiaar ; Trincomalee. 

 Dolium olearium, BRUGUIERE. Gulf of Mauaar ; Trincomalee. 



FAMILY: CASSIDID^. 



Cassis canaliculata, LAMARCK. N. of Gulf of Manaar ; S.E. of Ceylon. 

 Cassis (Casmaria) vibex, H. and A. ADAMS. S. of Adam's Bridge ; off Galle. 

 Cassis (Phalium) glauca, LINN. Pearl banks, Gulf of Manaar. 



