JIOLLTJSCA OF INDIA. 371 



Alyc^us canaliculus, n. sp. (No, 2764 B.M.) (Plate CLIV. 

 fig. 11.) 



Locality. Teria Ghat, foot of the Khasi Hills {Godivin- Austen). 



Shell umbilicated, giobose ; sculpture smooth : rather irregular, 

 close, oblique, fine ribbing, not amounting to costulation until 

 nearing the sutural tube, where strong costulation comes in ; 

 colour pale ochraceous ; spire rather high, apex blunt ; suture well 

 impressed, the sutural tube shortish and stout ; whorls 4, tumid 

 and rounded, the last is sharply constricted just in front of the 

 sutural tube, and expands again into a narrow ridge, which crosses 

 the whorl diagonally to the edge of the peristome and then splays 

 forward above ; aperture circular, oblique angulate above ; peri- 

 stome double, strong, with a decided notch or channel on the lower 

 margin, slightly rounded on the columellar margin, more so on the 

 outer. 



Size : maj. diara. 3*1; alt. axis 1'5 mm. 



The aperture recalls that of A. gemma of the Dafla Hills, but 

 the shell differs in other respects. 



Altc^us ceispatus, G.-A. (Plate CXLV. figs. 1, la, Ih.) 

 No. 2635 B.M. 



J. A. S. B. 1871, vol. xl. p. 91, pi. iv. figs. 1, 1 a, 1 b. 

 Godwin- Austen, J. A. S. B. 1875, vol. xliv. p. 8, pi. iv. fig. 3 (view 

 of basal side compared with that of A. sculpturus from Munipur). 

 Theobald, Cat. Suppl. 1876, p. 39. 

 G. Nevill, Hand-list, i. p. 291. 



Original description : — " Shell moderately umbilicated, turbinate, 

 rather thin, pale horny, with fine subdistant plicate costulation on 

 the upper part of the whorls near the suture, smoother below, 

 finely and closely ribbed on the swollen portion of the last whorl. 

 Spire conoidal, apex rather acute, suture well impressed. Whorls 4, 

 rounded, the last moderately swollen at the side, next constricted 

 and smooth for a short distance, then traversed by a slightly 

 recurved ridge, more developed in some specimens than in others, 

 with a nearly smooth interval behind the mouth, but gradually 

 becoming impressed with longitudinal undulations near the peri- 

 stome. Sutural tube moderate. Aperture diagonal, waved on the 

 outer and upper margins. Peristome thickened, irregularly double, 

 expanding with 4 or 5 deep undulations on the right side, extending 

 from the point of junction with the last whorl to the base of the 

 aperture ; the inner salient angles strongly projecting in aged 

 specimens. Operculum multispiral, thickened, convex behind, very 

 concave in front. 



" Habitat. Khasia, Jaintia, and N. Cachar Hills. Abundant. 



" This form is a close ally of Alycceus scidptilis, Bs. A variety 

 was obtained in the eastern side of the hill-ranges near Asalu, &c., 

 and figured in pi. iv. fig. 2 ; it differs from Benson's Burmese 

 species in having a well-marked ridge on the constriction and an 



