1901.J MOLLUSKS TEOM THE PBESIAN GULr. 413 



Nassa (Niotha) stuetiana, sp. n. (Plate XXIII. fig, 14.) 

 N. testa ovato-fusiformi, versus apicem attenuata, albo-calcarea vel 

 jpallide fusca, Jiaucl nitente, delicata ; anfi'actibiis novem, quorum 

 ajncales quatuor vitrei, perlceves, spiraliter sub lente pulchre 

 unicarinati apud medium, interdum fusco-tincti, cceteris apud 

 suturas impressis, infra, juxta suturas, spiraliter fortiter uni~ 

 sulcatis, longitudinaliter midticostatis, costis ohliquis, interdum, 

 IcBvibus, nitidis, inter stitiis regulariter transvershn sulculosis, 

 interdum omnino canceUatis, ultimi anfractus costis triginta et 

 quatuor, ad hasim ipsam descendentibus, ilUc dorsaliter fortiter 

 transversim sulculosis ; apertura ovata, cifiereo-alba, labro paul- 

 lum effuso, intus 10-11-denticidato, haud midtum incrassato ; 

 columella nitida, albida, nequaquam callosa; canali lato, brevis- 

 simo, paullulum reeurvo. 

 Long. 18, lat. 9 mm., spec. maj. 



Hab. Gulf of Oman. Lat. 24° 55' N., long. 57° 25' E. ; 37 

 fathoms, sand and mud. Lat. 24° 49' N., long. 55° 56' E. ; 225 

 fathoms, mud. 



A distinct Niotha, dull calcareous-white, or pale fuscous ; nine- 

 whorled, the four apical glossy, once delicately transversely keeled, 

 the remainder either uniformly cancellate, or with the many 

 close longitudinal ribs smooth and the interstices finely sulculose ; 

 just below the sutures in each whorl there is a strong deep apical 

 sulcus. The mouth is oval, outer lip not very thick, within with 

 ten or eleven denticles or raised striae. Columella white, rather 

 thin, shining, never callous. Canal very short, slightly recurved. 

 A good many examples dredged at the contiguous soundings 

 given above. 



We have unusual pleasure in associating with this most interest- 

 ing species, at Mr. Townsend's request, the name of his and our 

 friend, Mr. W. Neville Sturt, of the India Office. 



Nassa (Pheontis) pissilabeis A. Ad. 



P.G., M.C., generally. 10 fathoms, coral-sand. But always 

 local. 



Nassa (Hima) deemestina Gld. 



M.C. Generally distributed along the coast of Baluchistan. 

 From 3-10 fathoms. 



I. Karachi. Among loose stones and sandy mud. 



Nassa (Hima) eeedeeici, nom. nov. 



Nassa {Hima) townsendi Melv. Mem. Manch. Soc. vol. xh. part 

 iii. (1897), no. 7, p. 4, pi. 6. fig. l(non Dall). 



P.G. On Cable, 40 fathoms, mud. 



M.C. Generally distributed, but not abundant. 



The original name having been antedated, we have ventured to 

 associate with this species the Christian name of Mr. Frederick 

 W. Townsend. 



