5'iOLLTJSCA OF INDIA. 369 



circular ; peristome double, much thickened, very slightly reflected ; 

 operculum widely spiral, the sutures distant, slightly concave. 



Size : maj, diam. 3*25 ; alt. axis 4-0 mm. 



The operculum is of the type of D. urnula, smooth in front, the 

 sutures only just discernible. 



Altc^its (Dioktx) tjeceoltjs, n. sp. (Plate CLIII. figs. 9, 9 a.) 

 No. 3084 B.M. Coll. 



Locality. Abor Hills {Lt. G. F. T. OaJces, R.E.). 



Shell ovately globose, elongate, no perforation ; sculpture, costu- 

 lation next the sutural tube very fine and close, rest of shell finely 

 striate ; colour bleached ; spire high, apex small ; suture impressed, 

 the sutural tube moderately long : in the drawing made from the 

 first specimen received (many more came to hand afterwards) this 

 is represented too short, the end being broken ; whorls 4^, sides 

 rounded ; constriction short behind aperture ; aperture oval 

 vertically ; peristome simple, double, rather solid. 



Size : maj. diam. 4*8 ; alt. axis 4-25 mm. 



This species differs considerably from typical urnula in being far 

 larger and so high in the spire, urnula being more globose and 

 depressed ; from another Abor species of this subgenus it may be 

 Ivuown at once by its less tumid globose shape and the peristome 

 being far less thickened. 



Altc^us (Cxcloetx) sp. 



Locality. Abor Hills, on Tsanspu, No. 3116, Lat. 29° 25', 

 Long. 95° 20' (Oal-es). 



A single but not perfect specimen was found among a number 

 of Dioryx. It is characterized by strong costulation, and more 

 particularly by the openness of the umbilical region. In these 

 characters it is like A. {Cycloryx) costatus of the Dafla Hills. 



5. Garo, Khasi and Jaintia Hills {on South to S. Sylhet and on 

 NortTi to the Brahmaputra River). 



AlycauR hirugosus, G.-A. PI. LXIII. figs. 5, 5 a. 



biruffosns, G-.-A., var. PI. CLIV. figs, 7, 7 a. 



birugosus, var. minor. PI. CLV. figs. 9, 9 a. 



canaliculus, n. sp. PI. CLIV. fig. 11. 



crisiMtus, G.-A. PL CXLV. figs. 1, 1 «, 1 i, 7. 



crispatus, var. minimus. PL CXLVIII. figs. 5, 5 a. 



crispatus, var. onakarsce, G.-A. PL CLVIII. fig. 13. 



crispatus, var. rywukensis. PL CLIV. figs. 3, 3 a. 



generosus, n. sp. PL OXXXVIII. figs. 8, 8a, 8 b. 



(Cycloryx) graphicus, W. Blf., var. PI. OXLVI. figs. 2, 2 2a,i. 

 khasiensis. See No. 8. 



habiaiigensis, n. sp. PL CXXXVIII. figs. 2, 2 a, 2b. 



