1917-] H.H.Godwin-Austen: MoUusca, VII. ^75 



oval angulate above, well rounded below ; peristome double ; 

 columella margin curved. 



Size: major diameter 4*0, alt. axis 3'5 mm. 



Two specimens put up together from some other locality are 

 much smaller, with the last whorl more rounded, and not quite so 

 widely umbilicated. The differences are not sufficient to separate 

 them and more examples are wanted. 



Lagocheilus daflaensis, n. sp. 

 (Text-fig. 3 C.) 



Locality. — Toruputu, Dafla Hills, 7000 ft. {Godwin-Austen). 



Shell elongately conoid, umbilicated; sculpture about ten 

 fine lirae, regularly disposed, crossed by fine epidermal striae of 

 growth; colour dark brown; spire, sides nearly flat, apex fine; 

 suture moderately impressed; whorls 6, sides rounded, evenly 

 increasing; aperture circular^ obtusely angulate above ; peristome 

 double, continuous, sinuate on outer margin, with a small nick 

 at the suture. 



Size (largest): major diameter 52, alt. axis 4*0 mm. 



Lagocheilus sikhimensis, n. sp. 

 (Text-fig. 3D.) 



Locality. — Rishetchu, Sikhim {W. Robert). 



Shell openly umbilicated, turbinate, subturreted ; sculpture, 

 about 7 lirae on the peripheral part of the whorl, about 3 below, 

 5 can be seen within the umbilicus, none on the flatter part next 

 the suture; colour umber brown; spire fairly high, apex small; 

 suture open; whorls 5^, tumid; aperture circular, obtusely angu- 

 late above; peristome double, narrow, continuous; columella 

 margin subvertical. 



Size: major diameter 50, alt. axis 3'o m.m. 



I introduce this species here, as it completes our knowledge 

 of the genus as distributed on the N.E. Himalaya. There are 

 some undescribed species from the Assam Range which I hope 

 soon to describe and figure. 



In my paper on the Cyclostomacea of the Dafla Hills, Assam 

 {Joiirn. As. Soc. Bengal, vol. XLV, 1876, p. 174), I give Lagocheilus 

 to}notrema, Bs., as found on the Tanir Ridge and Toruputu Peak, 

 " not common." Nevill, to whom I gave specimens, records in his 

 Hand List of Shells in the Indian Museum (p. 282) 4 sp. from the 

 Dafla Hills. I have before me 4 specimens from Toruputu and on 

 examination under the microscope placed side by side with L. 

 toiHOtrema from the Garo Hills, which is not far from the typical 

 locality the Khasi Hills, the Dafla shell is certainly distinct. 



