Contributions to Indian Malacology . 
139 
1862.] 
Hab. cum A. grapJiico ad Moditoung. 
But a single specimen of each variety was found. The first was 
obtained on the banks of the Fado Khyoung, a stream running 
from the Arakan range on the Pegu side in the district of Henzada. 
A single specimen either of another variety, or of a distinct but 
closely allied species occurred to me on the banks of another stream, 
the Alon Khyoung, lying between the two previously mentioned 
localities. This form differs in having a simple lip, and, apparently, 
a longer sutural tube. None of the specimens are quite fresh, 
although all are in fair condition and’unbleached. Of the epidermis 
only traces remain on both shells. 
This species is not affined to any known form. It is perhaps 
nearer to the little group to which A. graphicus belongs than to any 
other, but it has not the short sutural tube nor the ovately conoid 
form which characterizes that section of the genus. The shortness 
of the constriction, and the very slight degree in which it expands 
towards the aperture, connect this form somewhat with the section 
Dioryx of Mr. Benson. 
5. Alycjsus sucoorEUSj n. s. 
Testa aperte umbilicata, depresso-turbinata, acute sinuato-costu- 
lata, succinea, translucens. Spira conoidea, apice obtusula* sutura 
impressa. Anfr. 4, ultimus ad latus inflatus, ibidem confertissime 
costulatus. Strictura longa, medio tumida, et duobus vel tribus 
costulis'obliquis, sulculis internis eorrespondentibus, signata. Tubu- 
ium suturale mediocre, £ peripheric subsequans. Apertura obliqua, 
irregulariter circularis, superne subangulata: peristoma duplex ; in- 
terno continuo, incrassato, expansulo, margine dextro bis obtuse angu- 
lato, ad basin canaliculo baud intrante perforato; externo breviter 
expanso, retro relicto. 
mm. 
inch 
Hi am. maj. 
5 
or 0.2 
„ min. 
4 
0.16 
Alt. 
CO 
0.13 
Ap. diam. 
1 i 
1 2 
0.06 
Habitat in montibus Arakanensibus. 
Some of the peculiarities of this species, such as the canaliculate 
base of the peristome, and the two or three small plaits on the con¬ 
strictions are repeated in that next described. The plaits or ridges 
