36 LAND AND FRESHWATER 



Glessttla (Rishetia) garoense, n. sp. (Plate CLTX. fig. 15.) 



Locality: South Garo Hills. Type. No. 1595 B.5I. {Godwin- 

 Austen). 



Shell attenuately turreted, sides flat, thin ; sculpture, surface 

 very smooth, a few distaut transverse shallow engraved lines, 

 ditferiug from the usual raised stria; ; colour pale umber-brown ; 

 spii'e tine ; apex very attenuate, first 4 whorls with same diameter 

 (PI. CLXIV. tig. 5); suture shall-jw ; whorls 13, sides flatly convex, 

 there is but little difference in the diameter at the Dth whorl and 

 the last; aperture narrowly ovate; peristome thin, a callous on 

 the body whorl ; oohimellar margin oblique, very slight in structure, 



Size: maj. diam. 5-0; total length 27'25 mm. 



In form it is similar to 0. bacnlina, var. exilis of Sikhim ; the 

 apex is not so attenuate, the whorls are flatter, and the sculpture 

 differs considerably. In the Sikhim form there is much raised 

 striation. 



Under No. 68, p. Ifi9, of 'Nevill's Hand-list,' 2 specimens from 

 the Garo Hills are recorded under G. pertenuis ; they were presented 

 unnamed by me. These have been kindly sent home for comparison 

 by Dr. N. Annandale, to whom my best thanks are due ; they are 

 this species garoense. On this data in the ' Hand-list,' Mr. Gude 

 in ' Fauna British India ' extends the range of G. pertenuis, a Pegu 

 species, to the Assam Range ; such record of distribution is valueless. 



GtEssuLA (Rishetia) garoense, G.-A. 



Locality. South Jaintia ; 4 specimens, No. 35Q2 (Godwin- Austen). 



Shell attenuately turreted ; sculpture, striation very fine and 

 close, disappearing in full-grown shells; colour dull umber-brown ; 

 spire tapering evenly ; whorls 12. 



Size: maj. diam. 5-5 ; length 26-75 mm. 



At first sight there is a remarkable similarity between this 

 species and G. vertenitis, Wm. lilanford, of Basscin, but it dis- 

 appears under the microsco])e. The apical whorls are not alike, 

 and the aperture differs still more ou the columellar margin and 

 truncation. 



Glesstjla (Rishetia) gaeoense, G.-A., small var. (Plate CLIX. 

 fig. 11.) 



Locality. Naraindhur, Cachar; 11 specimens. Type. No. 1657 

 {F. Ede). 



This measures 20'5 mm. in length and 4'5 mm. in maj. diam. 

 It is of a darker umber than typical garoense, and has the very 

 smooth surface of that shell; 12 whorls, sides slightly more 

 convex ; apex very fine, first 4 whorls hardly increase at all 

 (PI. CLXIV. fig. 6). 



I am fortunate in having specimens in spirit of a .omall elongate 

 many-whorled species from Silchar, Cachar, sent me by Mr. F. Ede. 



