138 Contributions to Indian Malacology. [No. 2, 



Habitat in montibus Arakanensibus provinciam Burmanam Pegu 

 ab Arakan secernentibus. 



A Burmese representative of tbe little Daijiling group of Alyccei, 

 which comprises A. constrictus, B. A. Bemlex, B. and A. Otipho- 

 rus, B. A. grapJiicus, although much more globose than any of the 

 others, is in some respects intermediate between constrictus and 

 Otiphorus, resembling the first in size and somewhat in form, and the 

 latter in the refiexed left edge of the outer peristome. This charac- 

 ter, however, is by no means so much developed in the Burmese as 

 in the Darjiling species. The present has a more marked sculp- 

 ture than either of its three allies and differs from them also in the 

 very slight approximation of the costulation behind the constriction. 

 Almost all the species of the genus Alycceus, are more closely and 

 strongly marked upon the tumid portion of the last whorl than on 

 any other part of the shell, the length of the closer ribbing and of 

 the tumidity having a general relation to that of the sutural tube.* 



Several dead specimens of A. grapJiicus were found at Moditoung, 

 a halting-place about 55 miles from Prome, on the road across the 

 uninhabited Arakan Yoma range from that place to Tongoop. 



4. Alyc-Eus yestitus, n. s. 

 Testa subanguste umbilicata, turbinata, solida, epidermicle decidua, 

 crassa, subtestacea, sordide albicla, conferte, ad spatium infiatum con- 

 fertissime costulata, induta, sub epidermide rubella, lsevis, spatio 

 infiato costulato-striata. Spira conoidea, apice obtusa, sutura im- 

 pressa. Anfr. 4|- rotundati, ultimus teres, ad latus parum infiatus. 

 Strictura brevis, versus aperturam vix tumidior. Tubulum suturale 

 mediocre. Apertura fere verticalis, circularis, majuscula : peristoma 

 duplex ; interno continuo, externo expansulo., ab interno suleo separato, 

 ad anfr. penultimum breviter interrupto. 



mm. inch 



Diam. maj. 5 or 0.2 



„ min. 3i 0.14 



Alt. vix 3 0.12 



Apert. diam. ]| 0.06 



Hab. in montibus Arakanensibus. 

 Var. minor. Diam. maj. 4, min. 3, Alt. 1\ m.m. 



* A. otiphorus, B. is not costulated, but simply, closely and regularly striated 

 throughout, rather more closely and costulately on the inflation. 



