18 Contributions to Indian Malacology, No. XI. [No. 1, 



plici, ceteris duplicibus, constant. Diam. maj. 6\, min. 5j, alt 2f mm. 



Hab. ad Mairung in montibus Khasi, et varietas minor in valle Bung- 

 nu prope Darjiling in SikJcim. 



I procured specimens of this shell, 3^ to 4i mm. in diameter, 12 

 years ago at Darjiling ; they were considered by Mr. Benson a 

 small variety of Helix Pinacis, (See Ann. and Mag. Nat. Hist, for 

 April, 1860). Eecontly the same form has been found by Major 

 Godwin-Austen in the Khasi hills. It differs so enormously in 

 size from H. Pinacis, the respective diameter of the two shells being 

 6^ and 14 millimetres that, as no intermediate forms have been met 

 with, it is evident that the two should be distinguished, and there 

 are several differences of sculpture and form which appear to me to 

 bear out the separation. Thus the mouth in II. macromphalus is 

 compressed above the periphery, whereas in the larger form the 

 mouth is regular. H. Pinacis too has spiral striation below, which 

 is absent in the new form ; and the former has 6, the latter only 5 

 internal palatal plicae, which moreover differ from the 5 lower plicso 

 of H. Pinacis slightly in form. The last named shell also is much 

 more angulate at the periphery. 



16. Bulimus vicarius, sp. nor. PL III, fig. 15. 



Testa prof unde rimata, oblongo-turrita, tcnuiuscula, opaca, fulvesccnte- 

 castanea, oblique striatula, lineis mi nut is confer tissimia flcxuosis sub- 

 obsolete decussata ; spira turrita } hdcribus convexis ; apice obtuso ; sufura 

 impressa. Anfr. 8 convex/', ultimas \ longitudinis sub-ccquans, basi sub- 

 compressus, antice sub-ascendcns. A.pertura fere verticalis, truncato-ovalis; 

 peristoma undique expansum, album, marginibus convergent ibus callo tenui 

 junctis, columellari ' vertical i. Long, lb, diam. 5, apert. cum perist. 5 

 longa, 4 lata. 



Hab. ad Habicmg in montibus Garo (Godwin-Austen). 



The nearest ally to this shell is B. Xilagaricus, P f r., which, singu- 

 larly enough, also occurs in the Khasi Hills, having been found 

 by Major Godwin-Austen. The present form is distinguish- 

 ed by greater slenderness and smaller mouth. 



17. Bulimus Caleadensis, Bed dome, MS. 



Testa sinistrorsa, snb-obtecte perforata, elevato trochiformis, solidula, 

 striatula, albida, epidermidefulva? {yelftavescenti, forsan varie coloratd) 



