1901.] MOLLUSKS FROM THE PERSIAN GULF. 435 



Pleurotoma (Oligotoma) violacea Hinds. 



I. Karachi. Inside the harbour in 3-7 fathoms, loose stones 

 and mud. 



P. vertebrata Sm., occurring also at Karachi, is perhaps only 

 varietal. 



SuRCULA AUSTRALis (Lam.). 

 I. South of Bombay {Lt.-Col. H. D. Olivier). 

 Some little doubt exists as to the exact locality for this species, 

 which has its headquarters in China and the Philippine Isles. 



SuRCULA CATENA Reeve. 



M.C, In young condition 5-10 fathoms ; fine adult examples 

 20-30 fathoms : all on very soft mud bottom. Generally distri- 

 buted. 



SURCULA OINGULIFERA Lam. 



P.Gr. G-enerally distributed in the G-ulf, extending to the Gulf 

 of Oman, 5-15 fathoms, sandy mud. The largest examples, If 

 inch in length, occurred in lat. 26° 50' N., long. 54° 50' E. 

 Var. amicta Sm. 



I. Bombay (Abercrombie), Bassein and Bombay Harbour as far 

 south as Goa {Lt.-Col. H. D. Olivier). 



We cannot separate Pleurotoma cincta Lam. 



Stjrcula javana L. {^=nodifera Lam.). 



I. Karachi. Rare. 'Bomhdij {Abercrombie). Cast ashore very 

 frequently, and often in good condition, after stormy weather, 

 thence southwards to Panjim and Goa {Olivier). 



SURCULA TORKATA Dlllw. 



Yav. fulminata Kien. 



M.C. Generally distributed over the Persian coasts and those 

 of Balucljistan. 



I. Karachi, Bombay {F. W. T., Abercrombie). Bassein and 

 Bombay Harbour southwards to Goa {Olivier). 



SuRCULA TUBERCULATA Gray. 



M.C. A common species at 5-30 fathoms, soft mud ; the most 

 perfectly developed specimens coming from the greater depth. 



Drillia AjStgriaseistsis Melv. 



I, Angrias Bank {Captain W. A. Tindall). 



Drillia alcyonea, sp. n. (Plate XXIII. fig. 21.) 

 D. testa gradato-fusiformi, nitidissim,a, Candida, unicolore; anfrac- 

 tibus septem, quorum ajjicalis ipse vitreus, Icevissimus, duobus hinc 

 proximis apud medium acuticarinatis, cceferis recticostatis, 

 costis nitidis, spiraliter in antepemdtimo hi-, in penultinio 

 avjractu triliratis, idtimo inclistincte guiaque-lirato, costis ad 

 medium evanidis, inde ad basim attenuato, multistriatulo ; 



