Mr. W. H. Benson on new Species of Helix. 83 



culis, cseteris planiusculis, ultimo acute conipresso-cariuato, antice 

 breviter descendente, subtus convexo ; apertura obliqua, elliptico- 

 lunata ; peristomate tenui, undique expanso concolori, marginibus 

 subconuiventibus, columellari dilatata, umbilicum profuudum semi- 

 tegente. 



Diam. major 22, minor 19, axis 13 mill. 



Habitat ad Portum Blair Insulae Andamanicae. Detexit Capt. J. C. 

 Haughton. 



This is the largest and most characteristic Helix yet dis- 

 covered in the Andaman Islands. Its nearest continental ally 

 will be found in H. Merguiensis, Vh.., from which it differs in its 

 more elevated conoid spire, narrow umbilicus, more widely sepa- 

 rated margins of the non-reflected peristome, &c. On the other 

 hand, it has relations to the higher-spired H. Capiiiutn, B., of 

 Hindostan. 



Helix Hyba, Bens., n. sp. 



H. testa subaperte et profunda umbilicata, conoideo-convexa, subtro- 

 chiformi, superne coufertim oblique scabreque plicata, striisque exi- 

 lissimis spiralibus decussata, subtus miuutissime granulata, Iseviore, 

 nitidula, epidermide fusco-coruea ; spira elevata, gibboso-convexa, 

 lateribus convexiusculis, apice obtuso, sutura leviter impressa, 

 marginata ; anfractibus 6, lente accrescentibus, vix convexiusculis, 

 ultimo non descendente, carina peripherica basali acuta utrinque 

 marginata circumdato, subtus horizontali, couvexiusculo ; apertura 

 obliqua, parva, subquadrato-lunata ; peristomate recto, acuto, mar- 

 gins columellari superne vix expansiusculo. 



Diam. major 14, minor 13, axis 7 mill. 



Habitat in montibus Sub-bimalayanis, ad Dahinkhooud, non procul 

 a fluvio Sutlej. Detexit J. D. Smithe. 



This interesting form, discovered in the mountains near the 

 Bari Do-ab by J. Doyle Smithe, Esq., F.G.S., of Madhopore, 

 and kindly communicated to me by his brother, the Rev. Fred. 

 Smithe, of Churchdown, approaches more nearly to the Nil- 

 gherry H. G^ierini, Pfr., than to any Himalayan species. It is 

 notable for its shorter vaulted spire, sharp keel, rather open 

 umbilicus, and sculpture. 



In one imperfect specimen, with a higher and more rounded 

 hive- shaped spire, the keel of the penultimate whorl overhangs 

 the anterior part of the last whoi'l. This variety measures — 



Diam. major 12, minor 12, axis 7 mill. 



Helix Choinix, Bens., n. sp. 



H. testa perforata, vix conoidea-depressa, tenui, oblique striatula, striis 

 exilissimis spiralibus confertissime decussata, superne fusco-cornea, 

 subtus pallidiore, translucente ; spiva subconoideo-planulata, apice 

 vix elevato, obtuso, sutura leviter impressa, submarginata ; anfrac- 

 tibus 6, vix convexiusculis, superioribus arctius coavolutis, ultimo 



