410 MESSBS. MELTILL AND STAIfBElSr OK [JuTie 18, 



acutis,ultimumad anfr actum circa duodecim, interstitiis spiraliter 

 argute sulcatis. ; apertura ovata, labro incrassato, intus denticu- 

 lato, margine columellari supra uninodidoso, infra versus basim 

 tridentieulato ; canali brevissimo. 

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

 Hob. Lat. 25° N., long. 63° E. 25 fathoms. 

 Several examples, many in subfossil condition. This seems a 

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

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

 protoconch, the next apical whorls being vitreous, once transversely 

 carinate, the remainder of the whorls acutely longitudinally ribbed, 

 ribs smooth, shining, the interstices being spirally snlcated 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 (ALECTBYOisr) ELEGANS Kien. 

 P.G, 24 fathoms, sandy mud. 



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

 marked; dredged at 10 fathoms. 



Nassa (Albotktok) ebanea \ sp. n. (Plate XXIII. fig. 11.) 

 N. testa ovata, compressa, versus apicem attenuato-turrita, solida, 

 castaneo-fulva ; anfractibus octo, quorum apicales tres vitrei, 

 delicatissime infra medium uniearinati, cceteris ad suturas im- 

 pressis, arete crassicostatis, costis infra, juocta suturas, uni- vel 

 bi-nodulosis, liris spiralibus obscuris vel, interdum, omnino 

 evanidis ; apjertura rotundo-ovata, intus fulvescente ; labro albo, 

 incrassato, nitido, intus paucidenticulato ; columella supra 

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

 lato, brevi. 

 Long. 12, lat. 6 mm. 



Hah. Persian Gulf (no precise locality). 



Allied to N. hifaria Baird. An obese species, pale fulvous 

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

 carinate, otherwise 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, short. 



Nassa (Alecteyoi^) hibta Kien. 

 I. Karachi. 3 to 7 fathoms, gravel. 



Nassa (Alectbyok) idyllia, sp. n. (Plate XXIII. fig. 12.) 

 N. testa ovata, spira paidlum attenuata, solida, straminea ; anfrac- 

 tibus 8, quorum apicales quatuor Iceves, ad medium fortiter 



^ epavos, a contribution. 



