102 G. & IT. Nevill — Descriptions of new Marine Mollusca. [No. 2, 



men lately dredged alive in Paumben Straits in 39 faths., which must 

 apparently be referred to H. acuta, though it is thicker and more callous 

 than any of the Persian Gulf specimens and the striation is entirely 

 obsolete ; owing to its much thicker texture and more developed teeth, the 

 aperture is much more contracted ; other specimens may eventually prove 

 this form to belong to a distinct species. 



Bingicula Caeon, Hinds. 



Voy. Staph. 1844, {Malacca). 



This species also was dredged by Mr. Blanford at Gwadar ; it is quite 



distinct in all its characters from B. acuta, the peculiar and very different 



outer lip, slight development of the parietal tooth, and different texture and 



striation at once distinguishing it. 



Eengicttla apicata, Nevill. 

 J. A. S. B., 1871, (Mauritius). 

 Lately found by one of us at the Andamans rather abundantly ; it is 

 only distinguishable from R. acuta, Phil. var. minuta, H. Ad. by its 

 smooth, polished appearance, having only three strise at the base of the last 

 whorl, instead of being striated throughout as in the other species ; it is 

 slightly narrower and more contracted, less callous, with the teeth more 

 sharply developed. 



PlNGICULA ABBBEVIATA, n. sp. 



Closely allied to H. Caron, Hinds ; it has the same regular striation 

 throughout and peculiar corrugated or crenulated outer lip, but has only 

 3|- whorls, the spire being strikingly short and truncated in appearance ; 

 there is no tooth within the outer lip, the parietal tooth is strongly deve- 

 loped, the callosity is extremely broadly reflected on the lower part of the 

 columella and is rugose and sub-obsoletely granulose, there are two teeth 

 on the columella, the lower one of which in some specimens is bifid. 



Long. 3 (of which the last whorl alone measures 2|), diam. 2\ mil. 



Balapiti in Ceylon, rather common. 



(Coll. Indian Museum and H. Nevill). 



Tbochus (Talloebis) eoseola, Nevill. 



J. A. S. B., 1869, [Ceylon). 

 T. (Euchelus) Lamberti, Souv., J. de C. 1875, (2V. Caled.) 



That M. Souverbie should have overlooked our original description of 

 this remarkable form is unaccountable, the more so that the figure is an 

 excellent one, and that the description, as indeed does the name also, 

 indicates the peculiar colouration of the shell. It may be well to take this 

 opportunity of stating, that we have found in our Indian seas the greater 



