Manchester Memoirs, Vol. xli. (1897), No. 7. 21 



Dentalium conspicuum, sp. nov. (PL 7, f. 28). 



D. testa nitida, snbulata, arcuata, lactea, longitudinaliter 

 tenuistriata, striis inczqualibns, hie tenuibus, illic crassioribus, 

 spiraliter irregtdariter concentrice liricinctis, ad apicem 

 octagonalibus, ad basim evanidis, basi ipsa perlcevi, rotunda. 



Long, if, lat. T 3 6-unc. 



Hob. Karachi. 



A milky-white conspicuous species, slightly arcuate, 

 eight-angled at the apex, the longitudinal striae very 

 unequal down the body of the shell, and entirely vanish- 

 ing before the base, which is very smooth, and round at 

 the orifice. It is concentrically unequally lirate. 



Two specimens. 



Leucotina jaskensis, sp. nov. (PI. 6, f. 11). 



L. testa pergracili, multum attenuata, delicatida, alba, 

 anfractibus novem, ad suturas impressis, veniricosidis, spiraliter 

 costatis, costis Icevibus, nitidis, interstitiis decussatis, apertura 

 oblonga, peristomate extus hand incrassato, paidhdum producto, 

 columella recta. 



Long. 10, lat. 2*50 mm. 



Hab. Jask, Persian Gulf. 



A white, exceedingly graceful, attenuate Leucotina, 

 nine-whorled, the whorls being slightly ventricose, all 

 uniformly spirally ribbed, the ribs smooth, bold, and 

 shining. Interstitially the whorls are decussate. Mouth 

 oblong, the peristome thin, slightly produced, columella 

 straight. Another beautiful form of this genus, L. speciosa 

 Ad., also occurs in Mr. Townsend's collections. 



Chione mekranica, sp. nov. (PL 7, f. 30). 



C. testa parva, subtriangidari, pallide albo-carnea, postice 

 trapeziformi, antice paidlum producta, margine ventrali recto, 



