472 On Moll u sea from the Bay of Bengal c&c. 



Scala hengalensis (Sraitli). 



Scalaria benfialensis, Smith, Ann. & Ma;?. Nat. Hist. 1899, vol. iv. 

 p. 246; Illust. Zool. ' Iiivestigator/ pi. xii. figs. 1, 1 a. 



Hah. Station 229^ off Travancore coast^ in 3G0 fath. 



Lacuna indica, Smith, 



Lacuna indica, Smith, Ann. & Mag. Nat. Hist. 1894, vol. xiv. p. 1C5, 

 pi. iv. fig. 7. 



Hah. Off Kistna coast^ 753 fath. 



The shell is white beneath an excessively thin deciduous 

 epidermis, which produces the " sordide albida '' appearance, 

 as described in the original diagnosis. 



Lacuna glohosa, sp. n. 



Testa globosa, tenuis, anguste timbilicata, pellncido-alba, pcri- 

 ostraco-teiiuissimo induta, limo rufescente sa?pe iucrustata, linois 

 increment! sculpta ; anfractus quatuor, celeritcr accrescentes, 

 percouvexi, i;ltimu3 antice oblique descendens, interne circa 

 iirabilicum carina prominente gracili instnictus; apertura irregu- 

 lariter rotundata ; peristoma tenue, continuum, margine externo 

 intra late sed baud profuiide sinuato, columullari in medio leviter 

 reflcxo et sinuato ; operculum corneum, paucispiralc, anfractibus 

 3-4 coustructum. 



Diam. uiaj. 5 mm., min. 4, alt. 5. 



Hab. Station 212, in 111 fath. 



Within the aperture a narrow and shallow groove corre- 

 sponds Avith the external umbilical keel. Just above the 

 termination of the latter the peristome exhibits a broad but 

 shallow sinus. I regret being unable at present to give the 

 position of Station 212. 



Natica rvfa, Born. 



Natica rvfa, Smith, Ann. & Mag. Nat. Hist. 1894, vol. xiv. p. 165, 

 pi. iv. tigs. 14, 14 a. 



Hab. J5ay of Bengal, G5 fath. 



A single specimen with rather higher spire than usual. 



Natica violacca, Sowerby. 



Satica violacca, Philippi, Con.-Cab. ed. 2, p. C6bis, pi. x. fig. 13. 



Hah. Off Andaman Islands^ 15 fath. ('Investigator^); 

 other localities are Philippines, Fiji, Mauritius. 

 No description of the operculum aj)pears to have bceu 



