252 ]\Ir. E. A. Smltli on MoUusca from the 



Hab. Station 324, W. of Burmali, 448 fath. 



One specimen only. Reniaikuble on account of the 

 radiating series of granules or small pustules. The extreme 

 tips of the umbones are smooth, then comes a small defined 

 unibonal cap with about nine plain -radiating riblets, after 

 Avhich commence the rows of granules These are as broad 

 as, or even in some cases broader than, the grooves between 

 them. On the anterior slope tliey become ridges rather than 

 rows of pustules and are at right angles to the margin of the 

 valves. They are also very much of the same character on 

 the lunular slope. 



Nucula Layardi, A. Adams. 



Nucula Layardi, A, Adams; Hanley, Sowerby's Tlies. Conch, vol. iii. 

 p. 160, pi. ccxxx. fig. loiJ. 



Hab. Persian Gulf, 47 fath. ('Investigator^); Ceylon 

 {Adams) . 



The single shell is probably adult and measures 15 mm. in 

 length, wliereas the type in the " Cuming" Collection is only 

 10^, the figure above quoted being enlarged. The Ceylon 

 shells are evidently young, from their thinness. The present 

 examj)lc is moderately thick, white beneath the periostracum, 

 and beautifully white- nacreous within. The hinge-teeth 

 are long, acute, six in front and nineteen behind. 



Yuldia vicina, sp. n. 



Testa Y. nicoharicce similis. scd postice magis acuminata, striisque 

 oVliquis niinus confertis insculpta ; valvse tenues, pellucidae, 

 periostraco flavo-olivaceo induta, nitida ; pagina iuterna nitens, 

 caerulco-albida ; denies postcriores circiter 2*3, anteriores ad 19, 

 panic validiores ; r.mbones laevigati, aliqiianto antemediani. 



Longit. 20*5 mm., alt. 11-5, diani. 7. 



Hab. Persian Gulf, 35 and 47 fath. 



This species is very like Y. nicobarica, Brug., but is more 

 sharply pointed at the posterior extremity, which is not so 

 high up as in that species. The oblique striae are much 

 fewer and further apart, and terminate in an oblique line 

 nearer the middle of the valves. Two specimens only were 

 obtained. 



Malletia brevis, sp. n. 



Testa oblonga, antice rotundata, postice subqnadrata, multum con- 

 vexa, periostraco Hifente Ihivescenti induta, apices versus pallidior, 

 incrcmenti lineis tenuibu* sculpta, striis postice magis conspicuis, 



