1872.] "W. Theobald & F. Stoliczka — Notes on Burmese Land Shells. 333 



striato ; apertura fere semicirculari, labro simplici, antice modice recedente, 

 margine subobtuso instructo, labio recto, incrassato ; operculo testaceo, tenui, 

 subdiapliano, paucispirato. Alt. testce 1'4, diam. max. 095 m.m. 



Sab. In valle fluminis Ataran, prope Moulmain. 



Allied to G. pyxis in having the uppermost spiral ridge on the whorls 

 somewhat remote from the suture, but the ridges themselves are stronger, 

 the whorls somewhat less numerous, the apex very distinctly mammillate, 

 and the entire form of the shell more slender and cylindrical. Only three 

 specimens were discovered by Mr. Theobald. 



The slight variation in the shape is indicated by the figures given of 

 two specimens. 



ACMELLA HYALINA, n. sp. PI. xi. Fig. 7. 



Ac. testa ovato conica, modice perforata, liyalina, sordide abbida ; spira 

 obtusa ; anfractibus 4-§- convexkisculis, sutura simplici et profunda junctis, 

 ad suturam subtruncatis, Icevigatis, ultimo spira paulo breviore, basi convexo ; 

 apertura regulariter ovata, supra (pel postice) subangulata, haud obliqua, 

 peristomate tenui fere continuo. Long. 1, lat. 0*7 m.m. (Operculum deesi). 



LLab. In collis calcareis prope Moulmain. 



Of the two known species of the genus, A. tersa and the doubtful 

 milium, both described by Benson from the Khasi hills, the present new 

 form closely agrees in the shape of the shell with the first, and in the smooth- 

 ness of the surface with the second. 



Acmella, Blanf., is evidently quite distinct from Georissa, or Hydrocena, 

 the latter being one of the Helicinid^}, while the former is most likely 

 a Cyclophorid, or possibly one of the intermediate forms close to Assiminea 

 and OmpTialotropis, connecting the Cyclophoeid^! with the RissoiDiE. 

 (Comp. Blanford in Ann. and Mag. N. H. for March 1869). 



SM LI CAGE A. 



Pupa ftlosa, n. sp. PL xi. Fig. 8. 



P. testa ovato cylindracea, cornea, pellucida, apice obtusiuseula, rimate 

 umbilicata ; anfractibus 4-|- convexiusculis, sutura simplici junctis, trans- 

 versim striis cuticularibus, obliquis,filiformibus ornatis ; ultimo spira breviore, 

 basi vix angustato, convexiusculo ; apertura subquadrangulari, recta, intus 

 dentibus quinque instructa, labro undique paulo expansiusculo, atque incras- 

 sato, infra suturam subangulato, ad latus dentibus duobus parvis profunde 

 sitis instructo ; labio tenuissimo, prope medium dentibus pliciformibus duobus 

 approximatis, anteriore multo minore, prcedito ; columella unidentata. Long. 

 2, diam. max. 1 m.m. ; apert. cum perist. 075 longa, antice - 55, postice 

 0"75 m.m. lata. 



Hab. In littore AraJcanense ; satis frequens. 



