from Burmah and the Andamans. 191 



ad peripheriam rotundato, subtus medio excavato ; apertura sub- 

 verticali, late lunari, peristomate albido, intus late incrassato- 

 marginato, superne recto, margine basali expansiusculo, undulato, 

 crassiusculo, columellari brevissime reflexo. 



Diam. major vix 18, minor 15^, axis 7 mill. 



Habitat ad Damatha, prope Moulmein. Detexit Capt. J. C. Haugh- 

 ton. 

 A single specimen is in the collection of Mr. Theobald. 



3. Helix Helferi, B. 



Testa profunde et anguste perspective umbilicata, orbiculata, sub- 

 depressa, oblique striatula, foveolis conspersa, sub epidermide 

 rufescente, sparsim hispida, albida, fascia rufa angusta superne 

 ornata ; spira depresse conoidea, apice valde obtuso, suturaimpressa, 

 submarginata ; anfractibus \\ convexiusculis, angustis, lente ac- 

 crescentibus, ultimo antice descendente, supra peripheriam obso- 

 lete angulato, circa umbilicum subito excavatum compressiusculo ; 

 apertura obliqua, transverse ovato-lunata, peristomate undique ex- 

 panso, marginibus approximatis, callo tenui junctis. 



Diam. major 12, minor 10, axis 6 mill. 



Habitat in Insulis Andamanicis sinus Bengalensis. 



This little shell, named after Dr. Heifer, who lost his life in 

 an attack made by the savage inhabitants while he was attempt- 

 ing to investigate the natural history of the Andamans, is nearly 

 related to H. asperella, Pfr., and H. fallaciosa, Fer. It is, how- 

 ever, deficient in the peculiar granulate sculpture of those spe- 

 cies, has a more closely-wound spire, a broader aperture, and 

 the umbilicus is suddenly and deeply excavated, instead of being 

 encroached on by the protuberance of the penultimate whorl 

 occasioned by the partial deviation of the anterior portion of 

 the last whorl. The granulate sculpture observable in the 

 two shells cited above is replaced in H. Helferi by scattered 

 shallow indentations, the seat of the hairs, which are to be 

 detected on the portion of the caducous epidermis remaining in 

 the single specimen received for examination. 



4. Helix Pilidion, B. 



Testa anguste umbilicata, subgloboso-conoidea, tenuissima, laevigata, 

 leviter striatula, striis remotiusculis elevatioribus corneo-fuscis, 

 alteris confertissimis spiralibus decussantibus, translucente, albida, 

 fascia unica peripherica rufa ornata ; spira conoidea, apice obtu- 

 siusculo, sutura leviter impressa ; anfractibus 4^, sensim accrescen- 

 tibus, convexiusculis, ultimo antice vix descendente, subtus con- 

 vexo ; apertura obliqua, quadrato-lunata, peristomate acuto, tenui, 

 undique expansiusculo, marginibus remotis, subconniventibus, 

 callo tenui junctis, columellari latiore triangulato-expanso. 



Diam. major 16, minor 13, axis 9 mill. 



Habitat in regione Peguensi. 



