158 



LAND AND FKEHUWATKB 



smooth, crossed by irregular lines of growth ; colour dull olivaceous 

 green ; spire flatly conoid ; suture impressed ; whorls 4, the last 

 expanding and capacious, rounded on the periphery ; aperture 

 flatly ovate, subvertical ; peristome thin ; columellar margin sub- 

 oblique. 



Size : maj. diam. 11-5, min. 9'5 ; alt. axis 5*0 mm. 



Shell-lobes, from what was left of them, resemble those of typical 

 Macroclilamijs, tongue-like. 



Jaw not found, 



Radula formula : 



43 , 2 . 10 . 1 . 10 . 2 . 43 

 55 . 1 . 55 



The centre tooth is tricuspid; the admedian teeth have a small 

 cusp on the inner side just below the main point, with another 

 basal cusp on the outside ; the lateral teeth are evenly bicuspid, 

 the marginals small. 



In this species the odontophore is of the same type as that of 

 Austenia gigas, with the inner upper cusp on the admedian teeth. 



Maceochlamts hengdanensis, n. sp. (Plate CVIII. figs. 4, 

 4 a, 4 h.) 



Locality. Hengdan Peak, North Cachar Hills (Gochvin- Austen). 



Shell globosely conoid, very thin, transparent, somewhat glassy, 

 umbilicated, extremely minute and hidden ; sculpture, surface 

 quite smooth ; colour pale sap-green ; spire subconical, apex 

 elevated, blunt : suture shallow ; whorls 4| ; aperture suboblique, 

 nearly circular ; peristome very thin ; columellar margin sub- 

 vertical. 



Size: maj. diam. 10*4, alt, axis 5*0 mm. 



Animal not seen. 



A species very close to 31. hengdanensis in form comes from the 

 Munipur Hills, associated with M. razamiensis. I put a specimen 

 containing the dried animal to soak, but unfortunately left it too 

 long. On examination I obtained nothing but the jaw ; this has 

 no central projection, proving that it is a distinct species from those 

 I have figured, and it may possibly be an Austenia. I take the 

 opportunity now it is before me of describing it, without a 

 figure : — 



MaCROCHLAMTS MUNIPTTREXSIS, n. Sp. 



Locality. JN.E, Munipur Hills {Godwin-Austen). Two specimens 

 in collection. 



Shell very globose and conoid, thin, scarcely and finely perforate ; 

 sculpture smooth and glassy to the eye, yet under high power and 

 in good light extremely fine fairly regular striation is visible ; 

 colour pale straw with a green tinge ; spire high, conic ; suture 



