92 Godwin- Austen — Descriptions of Ahjcceince. [No. 1, 



figured in PL iv, fig. 2 ; it differs from Benson's Burmese species 

 in having a well marked ridge on the constriction and an expanded 

 peristome to which there is no tendency in A. sculptilis, Bs. 



Alyc^us Ingrami, W. Blf., var. Plate IV, fig. 3. 



Differs from the described form from Arakan, in the mouth be- 

 ing larger, and there is a tendency to undulation on the outer mar- 

 gin of the peristome, generally 2 notches are present. 



Major diameter, 0-24".— Minor diam. 0-24".— Alt. 0-16".— Diam. 

 of aperture 0'11".— Sutural tube, 0-09". 



Habitat. Neighbourhood of Asalu, N. Cachar Hills. 



This shell assimilates in some respects A. prosectus, Bs. 



Alyceus Ingrami, var. Nagaensis, Plate V, fig. 2. 



Shell depressedly globose, openly umbilicated, thick, slightly 

 translucent white , generally covered with a thin muddy coating, 

 finely and sharply costulated throughout. Spire depressly conoid, 

 apex blunt, suture impressed, whorls 4, rounded, the last much 

 swollen, constriction close to the base of sutural tube, slightly 

 swelling again towards the mouth, quite smooth, sutural tube very 

 long and thin. Aperture oblique, circular, peristome double, both 

 lips close and slightly expanded. Operculum black, smooth and 

 concave in front, convex at back, with a central boss. 



Major diam. 0-20".— Minor diam. 0'32".— Alt. 0-29".— Diam. of 

 aperture 0-1 5". —Sutural tube, 0-15". 



Habitat. Neighbourhood of Asalu, rather local in its distribu- 

 tion, but then abundant. 



Its well costulated surface distinguishes it from the preceding 

 variety of A. Ingrami. 



Alycseus Jaintiacus, no. sp. PI. V, fig. 3. 



Shell sub-obtusely perforated, turbinate, pale amber or white, 

 smooth, finely ribbed on the swollen portion of the last whorl, with 

 sign of sub -distant ribbing behind the termination of the sutural 

 tube. Spire conoid, apex blunt, suture impressed. Whorls 4, 

 rounded, last very slightly swollen, then moderately constricted, 

 swelling again in a low ridge, somewhat recurved. Constriction 

 smooth ; sutural tube, rather short, fine, aperture sub-vertical, 



