410 MTSSBS. MELVIT.I. AND RCAKBSN ON "June 18. 



acutis, idti Irea duo I dm, into rttitiisspiraliter 



org ' ata t labro incrassato, intus denticu- 



lato, mart tellari tupra uninoduloso, infra vermis basim 



tridenticuUtic ; canali brevistimo. 

 Long. 8'25, lat. 4 mm . sp. maj. 

 Hah. Lat. 25° X.. long. 63° K. •>:> fathoms. 

 Several examples, many in snbfossil condition. This seems a 

 distinct form, to which we have not discovered a near ally. It may 

 be distinguished by its ovate form, whorls slightly turreted, smooth 

 protoeonch, the next apical whorls being vitreous, once transversely 

 carinate, the remainder of the whorls acutely longitudinally ribbed, 

 ribfl smooth, shining, the interstices being spirally sulcated with 

 sharp, narrow furrows. The mouth is oval, outer lip denticulate 

 within, the columella also being nodulous above, and thence den- 

 ticulate near the base. 



Nassa (Axbot&you) maejjna Kien. 

 P.G-. 24 fathoms, sandy mud. 



M.C. Specdmenfl all juvenile, but very finely and characteristially 

 marked; dredged at 10 rathoms. 



Nassa (Alextkyun) bbavaa \ sp. n. (Plate XXIII. fig. 11.) 

 N. testa ovata, compressa, versus apicetn attenuato-4urrita i toUda, 

 casta neo-fulva ; anfractibus octo, quorum apicales tres vitrei, 

 delicatusime infra medium v.nicarinati, eceteris ad suturas im- 

 presses, arete crassicottati . i suturas, uni- vel 

 bir-nodulosis, Uris spiraUbus obseurie v I, interdum, omnino 

 evanidis ; apertura roiundo-ovata, intus fuhiescente; labro aJbo, 

 inerassato, nitido, intus paueidenticulato ; columella supra 

 denticuUt binis, infra tribus prcedita, alba, nitida ; canali 

 lato, brevi. 

 Long. 12, lat. 6 mm. 



Hah. Persian Gulf (no precise locality;. 



Allied to -V. bifaria Baird. An obese species, pale fulvous 

 brown, attenuate towards the apex ; apical whorls three, once- 

 carinate, other vise quite smooth and vitreous, the remaining 

 whorls hardly ventricose, closely stoutly ribbed longitudinally, just 

 below the sutures they are spirally once or twice noduled, the 

 remaining spiral lines are often almost obsolete but occasionally 

 present throughout. Mouth round ; outer lip thickened, white, 

 with few denticles within ; the columella possessing a callous 

 nodule above, and being also denticled or rarely noduled basally ; 

 canal broad, s!<ort. 



Nassa (Alectryox) hieta Kien. 

 I. Karachi. 3 to 7 fathoms, gravel. 

 Nassa (Axbotbtot) idtllia, sp. n. (Plate XXIII. fig. 12. ) 

 X. testa ovata. gpira pouttam attenuate}, solida, straminea ; anfrac- 

 tibus 8, quorum apioalet ouatuor Icevcs, ad medium fortUer 



1 epavos, a contribution. 



