134 Contributions to Indian Malacology. [No. 2, 



quamin M. hirsuto, extus concaviusculum, lamina calcared ad centrum 

 carente, intus planum. 



Exempli majoris diam. maj. 7, min. 6, axis 5 f, ap. diam. intus 2f, millem. 

 „ minoris ,, h\ „ 4| „ 4J „ intus 2 „ 



Hob. In summis montibus Pulney diet is ; deteocit S. Fairbank. 



Shell narrowly mnbilicated, turbinate, thin, covered with a thick 

 deciduous, yellowish brown epidermis, with dark spiral and oblique 

 stripes, or more frequently perhaps altogether dark brown, with a 

 fringe of short hairs round the umbilicus : beneath the epidermis, the 

 shell is white with close spiral sculpture. In some specimens, as in 

 M. hirsutum, there are oblique raised lines outside the epidermis, but 

 they are not always conspicuous. Spire conical, suture deep. Whorls 

 5J convex, the last cylindrical, scarcely descending towards the aper- 

 ture which is oblique and nearly circular. The peristome is much 

 curved back, near the umbilicus,, where it is almost simple and scarcely 

 expanded : elsewhere the outer portion is sharply reversed, forming 

 a broad rim at right angles to the axis of the whorl on the outer and 

 basal margins, while near the penultimate whorl, it is produced in 

 front. The inner portion of the peristome scarcely projects beyond 

 the outer ; it is corrugated within, but not nearly so closely or strongly 

 as in M. hirsutum, and the corrugation is very faint towards the base, 

 and entirely wanting at the angle of the aperture and on the collumellar 

 margin. Operculum thinner than in the last species, and the calcareous 

 external portion less developed, and entirely wanting at the centre. 



Major diameter in a large specimen 0.28 inch, minor diameter 

 0.25, axis 0.22, diameter of the aperture inside 0.11. Of a small 

 specimen, the respective measurements are 0.21, 0.165, 0.16 and 0.08. 



This is a very different shell from the last, being much higher in 

 the spire with a broader edge to the mouth. The name is taken from 

 the last peculiarity. Only a few specimens were found by Mr. Fair- 

 bank. It appears to inhabit the tops of the Pulneys at a height of 

 about 7,000 feet. 



6.— Pterocyclos ? tristis, n. sp. Pi. XVI, fig. 9. 



Testa late umbilicata, depressa, tenuis, epidermide crassd,fulvescenti- 

 brunned induta ; sub epidermide albida, strialula. Spira convexa. 

 Apice parum exserto, per-obtuso, sutur a profunda. Anfr. 5 rotwidati ; 

 ultimus teres, longe sensim descendens. Apertura obliipua, rotunda .; 



