458 Mr. E. A.. Smith on MoUusca from the 



Pleurotoma (Surcula) breviplicata, Smith. 



Pleiiroto7na (^Surcula) hreviplicata, Smith, Ann. & Mag. Nat. Hist, 

 1899, vol. iv. p. 238 ; Jllust. Zool. ' Investigator,' pi. ix. figs. 3, 3 a. 



Hah. Station 233^ off Andaman Islands, in 185 fath. 



Pleurotoma {Surcula) eurina, Smith. 



Pleurotoma {Surcula) eurina, Smith, Ann. & Mag. Nat. Hist. 1899, 

 vol. iv. p. 239; lUust. Zool. 'Investigator,' pi. ix. figs. 4, An. 



Hab. Station 232, off South India, in 430 fath. 



Pleurotoma (Surcula) prcBcipua, Smith. 



Pleurotoma (Surcula) p)-(ecij)ua, Smith, Ann. & Mag. Nat. Hist. 1899, 

 vol. iv. p. 239 ; lUust. Zool. ' Investigator,' pi. ix. figs. 6, 5 a. 



Hab. Station 229, off Travancore coast, in 360 fath. 



Pleurotoma (Surcula) arcana, Smith. 



Pleurotoma (Surcula) arcana, Smith, Ann. & Mag. Nat. Hist. 1899, 

 vol. iv. p. 239 ; Illust. Zool. ' Investigator,' pi. ix. figs. 0, a. 



Hab. Station 233, off Andaman Islands, in 185 fath. ; and 

 Station 229, off Travancore coast, in 360 fath. 



Pleurotoma (Surcula) Margarita, sp. n. 



Testa fusiformis, turrita, albida, epidermide tenuissima lutescente 

 induta ; spira elongata, acuminata ; aufractus 12, in medio angu- 

 lati, nodose oblique plicati (plicis iuferne attenuatis), supra con- 

 cavi, infra subeonvexi, undique spiraliter tenuiter et confertim 

 striati lineisque incrementi flexuosis tenuibus sculpti, iiltimus 

 infra angulum convexus, antice breviter rostratus ; apertura 

 elongata, piriformis ; labrum tenue, valde arcuatim prominens, 

 superne late et profundo sinuatum ; columella in medio recti- 

 \iscula, antice obliqua. 



Longit. GO mm., diam. 20 ; apertura cum canali 27 longa, 8 lata. 



Hab. Off Andaman Islands, 405 fath. 



In the body- whorl there is a slight convexity or rounded 

 ridge just below the suture and above the excavation, below 

 which occur the oblique nodose plications which gradually 

 diminish in strength as the aperture is approached. 



Pleurotoma (Bathytoma) atractoides, Watson. 



Pleuroto7na (Genota) atractoides, "Watson, Gasteropoda ' Challenger ' 



Expedition, p. 301, pi. xx. fig. 8a-c. 

 Bathytoma atractoides, Harris, Cat. Austral. Ter. Moll, part i. p. 49. 



