448 MR. W. T. BLANFORD ON NEW MOLLUSKS. [June 24, 
A peculiar form, resembling H. oldhami, Bens., but with the mouth 
somewhat as in H. nilagarica, Pfr. 
9. Hexix (PLECTOPYLIS) ANDERSONI, Sp. nov. 
Testa dextrorsa, latissime umbilicata, discoidea, solidula, albida, epi- 
dermide crassula fusca, interdum ad peripheriam laciniatim fim- 
briata, induta, sub epidermide decussatu-striata, lineis spiralibus 
supra distinctis, infra subobsoletis. Spira plana, apice vix pro- 
minente, sutura subimpressa. Anfr. 74-8, angusti, arcte convo- 
luti, supra planulati, infra in umbilico convexiusculi, ultimus 
superne ad peripheriam angulatus, subtus tumidus et circa umbi- 
licum pervium, omnes anfractus monstrantem, obtuse compressus, 
pone aperturam leviter descendens, juata peristoma constriclus. 
Apertura perobliqua, rotundato-lunaris ; peristoma album, undique 
expansum, superne ad extremam peripheriam leviter angulatim por- 
rectum, marginibus lamella curvata, ad ambas extremitates incisa 
junctis, lamina intranti nulla. Janua interna remota, ad 4 an- 
fractuum ab apertura sita, e plica unica verticali parietali, 4 pa- 
latalibus horizontalibus, harum tribus inferioribus versus eatre- 
mitates altioribus, medio humilibus, postice subbifidis, una basali 
etiam horizontali simplici constans. 
Diam. maj. 26, min. 23, alt. 8} mill. 
Hab. Bhamo in regno Avee et Hoetone in Yunan. 
Distinguished from the numerous allied Burmese forms by the 
absence of a reentering lamina running from the aperture, by the very 
simple internal plication, &e. It approaches H. laomontana, Pfr; 
10. Hexrx (S1IvELLA) PERCOMPRESSA, Sp. nov. 
Testa aperte et pervie umbilicata, perdepressa, lenticularis, tenuis, 
cornea, acutissime carinata, nitida, striis incrementi oblique curvatis 
notata. Spira fere plana, apice vix exserto, sutura impressa mar- 
ginata. Anfr. 5, convexi, ultimus carina mediana acuta utrinque 
compressa instructus, circa umbilicum tumidior, non descendens. 
Apertura parum obliqua, securiformis ; peristoma tenue, rectum. 
Diam. maj. 12, min. 103, axis 3 mm. 
Hab. Bhamo in regno Ave. 
Near H. sanis, Bens., and H. castra, Bs., but more depressed 
than either. 
11. Nanrna (Rorvuta) ARATA, sp. nov. 
Testa imperforata, lenticularis, tenuis, cornea, supra oblique plicato- 
striata, infra levior nitidula, radiatim striatula. Spira depresso- 
conoidea, apice acutiusculo, sutura parum impressa, submarginata. 
Anfr. 7, lente accrescentes, convexiusculi, ultimus acute carinatus, 
sublus convexus, non descendens. Apertura angulato-lunaris, 
obliqua ; peristoma rectum, obtusum, marginibus distantibus, basali 
subincrassato, columellari declivi vir reflexiusculo. 
Diam. maj. 233, min. 214, axis 11 mm. ; apertura 124 mm. lata, 
8 alta. 
Hab, haud procul a Bhamo in regno Ave. 
