362 LAND AND IRESH\yATEK 



4. Eastern Assam. 



AlyccBus hrahma, G.-A. PI. XLYIII. fig. 3. 

 brahvia, G.-A., var. 



cUsfinctus, G.-A., rar. PI. CXXX7II. figs. 2, 2a, 26. 



Bioryx) uniula, var. globosus. PI. GLIII. fig. 8. 



(^Cycloryx) granum, G.-A. PL LXIII. fig. 6. 

 (Cycloryx) cfraphicus,vsir. dihingensis, n. sp. PI. CXLVI. figs. 6, Qa. 



loJdfcnsis, n. sp. PI. CXXXVII. figs. 1, 1 a. 



oglei, n. sp. PI. CXLVIII. fig. 2. 



This is a large extent of country, raucli of it but little known 

 from a natural history point of view. It includes the Eastern Naga 

 Hills from about the longitude of Seebsagur, on to Sadia, and the 

 valleys of the Diyung and Lohit, from lirahraakund eastwards, 

 lying north of the High Snowy Range in which the tributaries 

 of tlie Irravaddy, the Mali Hka, and N'Mai Hka, take their rise. 

 The terrestrial moUusca from the vicinity of this rauge cannot fail 

 to be of extreme interest, in the relationship of those of Burma on 

 the one hand, and Assam and the Tsanspu valley on the other. 



Alycjsus oglei, n. sp. (Plate CXLVIII. fig. 2.) No. 2491 

 B.M. Coll. Type. 



LocaliUj. Sadia, one specimen figured ; Dihing, 500 ft., type, two 

 specimens {M. T. Ogle). 



Shell globosely conoid, umbilicated ; sculpture, close regular 

 costulation on the swollen part of the last whorl, at termination of 

 the suture becoming more distant ; colour bleached ; spire high, 

 turbinate, apex small ; suture very impressed, the sutural tube 

 very long ; whorls 4, with very rounded sides, very slightly con- 

 stricted at the sutural tube and expanded slightly to the aperture, 

 this portion short and smooth ; the aperture subvertical, hori- 

 zontally oval, slightly angulate on upper inner margin ; peristome 

 double, thickened, crenulated, with four indentations, the first high 

 on outer margin. The operculum (Dihing specimen) is remarkable, 

 being multispiral and dee])ly concave in front. 



Size: maj. diam. 5-5; alt. axis 2*9 mm. 



The shell figured from Sadia is unfortunately rather an old 

 specimen, the costulation much worn ; from the Dihing valley, 

 one is in a perfect stage of growth and shows the type of sculpture 

 well. 



Alcy^its lohitensis, n. sj). (Plate CXXXVII. figs. 1, 1 a.) 

 No. 2493B.M. Type. 



Localitt/. Brahmakund, Eastern Assam (3/. T. Or/le). 



Shell turbinate, umbilicus open ; sculpture fine, rather close 

 costulation, close, coarser and well defined near the sutural tube, 

 which is long ; colour stony white ; spire rather high, apex fine ; 



