1870-] Contributions to Indian Malacology, No. XI. 15 



Hab. ad Habiang in montibus Garo. (Godwin-Austen.) 

 This shell is somewhat allied to the Tenasserim N. acerra of 



Benson, but it is much less globose and easily distinguished by its 



rufous periphery. 



10. Nanina Austeni, sp. nov., Pi. III. fig. 10. 



Testa imperforata, conoidea, depressa, tenuis, cornea, acute carinata, 

 superne confertim arcuate costidata, costulis infra carinam evanescentibus, 

 subtus. Icevis, polita, radiato-striatida. Spira breviter conoidea, lateribus 

 concaviusculis ; apice obtuso; sutura nonimpressa. Anfr. 6|- planulati, lente 

 accrescentes, cujusque margine externo leviter projiciente, ultimus parum 

 latior, compresse carinatus, antice non descendens, subtus convexus. 

 Apertura angulato lunaris, parum obliqua ; peristoma obtusum album, 

 infra carinam leviter sinuatum, marginibus callo tenui junctis, columellari 

 obliquo, magis incrassato, superne haud reflexo. Diam. maj. 15, min. 13^, 

 axis 7 mm. 



Hab. ad Habiang in montibus Garo, extra fines meridionales provincice 

 Assam in India orientali. (Godwin-Austen.) 



This very pretty little species, which I name after the discoverer, 

 is intermediate in some respects between JSf. semda, B s. and JV. 

 climacterica, B s., resembling the former above, and the latter be- 

 neath. It is distinguished from the first by being imperforate and 

 from the latter by the higher spire, stronger sculpture and the pro- 

 jection of the external edge of each whorl just above the suture. 



ii. Nanina falcata, sp. nov., Pi. Ill, fig. n. 



Testa aperte perforata, conoidea, depressa, cornea, oblique arcuatim costu- 

 latoplicata, plicis infra periplieriam evanescentibus, subtus Icevigata, polita, 

 radiato striatula. Spira parum elevata, depresso conoidea ; apice obtuso; 

 sutura impressa. Anfr. 6 convexi gradatim crescentes, ultimus paulo latior, 

 subtus convexus, peripheria sub-angulata antice rotundata. Apertura 

 lunaris, parum obliqua ; peristoma tenue, infra periplieriam late sed non 

 profunde sinuatum, margine columellari juxta perforationem brevissimo, 

 sub-verticali, reflexiusculo. Diam. maj. 13, min. 12, axis 7 mm. 

 Hab. ad Habiang in montibus Garo (Godwin-Austen.) 

 This shell is somewhat allied to JV. ornatissima, B s., but is much 

 smaller, less depressed, with the last whorl broader in proportion 

 and one whorl less. It belongs to the same general group (Ilemi- 

 plecta ? ), as Austeni, climacterica, ornatissima, &c. 



