MOLLUSCAN SHELLS. 287 



Surcula cingulifera, LAMARCK. S.E. Ceylon. 

 Surcula javana, LTNN. (= nodifera, LAMARCK). Galle. 



Drillia crenularis, LAMARCK. Pearl banks, Gulf of Manaar ; S. of Modragam. 

 Drillia spectrum, REEVE. Deep water off Galle. 

 Cythara hypercalles, MELVILL. N. of Shoal Buoy. 



FAMILY : CANCELLARIID^E. 

 Cancellaria (Trigonostoma) articularis, SOWERBY. Jokkenpiddi Paar. 



Cancellaria (Trigonostoma) crenifera, SOWERBY. -Pearl banks, Gulf of Manaar. 

 Cancellaria (Trigonostoma) hystrix, REEVE. S. of Adam's Bridge. 

 Cancellaria (Trigonostoma) lamellosa, HINDS. Pearl banks, Gulf of Manaar. 



ORDER : OPISTHOBRANCHIATA.* 



FAMILY: ACTEONIDvE. 

 Solidula affinis, A. ADAMS. Pearl bank, Aripu ; Trincomalee ; off Galle. 



FAMILY : SCAPHANBRID.E. 

 Atys naucum, LINN. Trincomalee. 



FAMILY: BULLION. 



Bulla ampulla, LINN. Pearl banks, Gulf of Manaar; Trincomalee; S. of Adam's 

 Bridge ; pearl banks off Aripu ; deep water off Galle ; Trincomalee ; S. of Modragam. 



FAMILY : APLUSTRID^E. 

 Aplustrum thalassiarchi, MARTYN. S. of Modragam Paar. 



FAMILY: RINGICULID.E. 

 Ringicula encarpoferens, FOLIN. Galle. 



CLASS: SCAPHOPODA. 



FAMILY : DENTALIID^E. 

 Dentalium attenuatum, SOWERBY. Off Galle. 



* See also Mr. FARRAN'S Report, Part III., p. 329. Ed. 



