32-4 LAND AND FKESHWATEE 



traced on the base ; wborls seven, closely wound ; the last scarcely, 

 if at all broader tlian the previous one, more or less subangulate at 

 the peripliery ; base convex, distinctly excavated round a deep, 

 narrow umbilicus; aperture very shallow, the outer margin dis- 

 tinctly thickened, slightly subangulate in the middle; columella 

 very slightly reflected, oblicpie, evenly rounded, without any angu- 

 lation at the base, in this character resembling iV, sj_)leiulens and 

 differing from N. prona. 



" I know of no Indian species like this interesting little shell ; 

 in shape it somewhat resembles the smooth N. woodiana. Diam, 11^, 

 alt, 5.^, axis 4|, apert. lat. 5^ mm. 



" Dr. Stoliczka found a few specimens alive at Sonamurg ; he 

 notes that the animal is provided with a mucous pore."' 



The resemblance to N. tvoodiana, mentioned above by Nevill, is 

 a conchological one. The animal of woodiana I have never l)een 

 able to obtain ; it is from Southern India. What its generic 

 position is has yet to be determined. 



Nearly 40 years have gone by since these two species were 

 discovered by Stoliczka. Erom him I received much help and 

 encouragement; he was one of those officers of the Geological 

 Survey of India with whom I came in contact, just at the time the 

 Indian land-mollusca had attracted my attention. It has therefore 

 been a labour of love to examine these animals and establish their 

 generic position, feeling as if Stoliodca was by my side while carry- 

 ing on the work he began. I am more than usually indebted to 

 Dr. N. Annandale for entrusting me with these valuable spirit- 

 specimens, which have lain so many years in the Calcutta Museum. 



Mackochlamys DECTJRStJS, u. sp. (Plate CL. fig. 3.) 



Localitif. Sheroifurar Peak, Lahupa-Naga Hills, N.E. Munipur, 

 No. 581 liM. Coll. {Godwin- Austen). 



The shell was unfortunately lost before the description was made, 

 but that of the animal is sufficient to enable any mahicologist who 

 may visit that fine ])eak in ^lunipur to determine the species. 



Animal black throughout : a long, broad, tongue-shaped right 

 shell-lobe ; left shell-lobe small ; foot divided. 



A very long araatorial organ and long spermatheca. 



Radula as usual ; laterals bicuspid. This is mounted on a slide 

 in the B.XL. Collection. 



Macrochlamts ? siLCUETExsis, n. sp. (Plate CLYIII. fig. 9.) 



Locality. Silcuri, Cachar. 4 specimens from the Indian Museum, 

 Calcutta : type returned {J. Wood-Mason). 



Shell perforation hidden, globosely conoid ; sculpture, rather 

 coarse irregular transverse striation,not a sign of any longitudinal ; 

 colour pale burnt sienna ; spire high conic, apex blunt, sides 

 convex ; suture shallow ; whorls 6, regularly increasing, sides 



