I 



Mti W. H. Benson on new Helicidse* ^Iz 



10. Heliiv scalpturita, nobis, n. s. 



Testa umbilicata, globoso-depressa, striatula, confertim spiraliter 

 acuducto-striata, nitidiuscula, albida, versus apicem et antice pal- 

 lide rufescente, aliquando unifasciata ; spira conoidea, apice obtuse, 

 sutura impressa; anfractibus 5^ sensim acerescentibus, convexi- 

 usculis, ultimo rotundato, antice parum breviter descendente; 

 apertura obliqua, rotuudato-lunata, peristomate tenui, expansi- 

 usculo, margine eolumellari dilatato-expanso, umbilicum angustum 

 profundum partim celante. 



Diam. major 22, miiior 19, axis 14 mill. 



Var. depressior: Diam. major 20|^, minor 18, axis 11 mill. 



Habitat in regno Ava, teste Prof. Oldham. 



Independently of size, colour, and greater solidity, there would 

 be little to distinguish this shell from the true H. similaris, Fer., 

 were it not for its peculiar sculpture. A still more depressed and 

 smaller variety than that of which the measurement is given, was 

 found by Mr. Theobald at Thyet Mio or Prome, in company 

 with H. similaris of the ordinary form and size, and having the 

 horn-coloured epidermis minutely wrinkled as in the Pinang 

 shell. H. similaris also occurs in the neighbourhood of Dacca 

 in Bengal, in Southern India, where Dr. Jerdon found it scarce, 

 in China, and most plentifully on the hills of Moka in the Mau- 

 ritiu^s, creeping even on the wood work of the country-houses. 

 Dr. Theodore Cantor is the authority for its occurrence at Macao 

 and Pulo Pinang, from both of which places he favoured me with 

 specimens. If its Brazilian habitat be correctly given, it is the 

 most widely-spread tropical Helix known. H. scalpturita is 

 named from its shallo\V scratched sculpture. 



11. Helix levicuhy nobis, n. s. 



Testa angustissime perforata, globoso-depressa, tenui, oblique stria- 

 tula, striis spiralibus obsoletis sub lente vix decussata, polita, sub- 

 diaphana, luteo-cornea ; spira convexiuscula, apice vix elevatiusculo, 

 obtuso, sutura impressa, marginata ; anfractibus 3 celeriter aceres- 

 centibus, ultimo antice majori, subtus convexo-subconoideo, peri- 

 pheria superne subangulato-rotundato ; apertura obliqua, magna, 

 rotundato-quadrato-lunari, peristomate acuto, superne antrorsum 

 arcuato, margine eolumellari subverticali, superne breviter reflexo, 

 umbilicum subtegente, basali leviter arcuato. 



Diam. major 7, minor 5^ axis 3^ mill. ; apert. 4 longa, 4^^ mill. lata. 



Habitat ad Phie Than, raro occurrens. 



Described from a single specimen in Mr. Theobald's collec- 

 tion. Were it not for the presence of the perforation, the shell 

 might be easily ascribed to Vitrina. It has close relations with 

 two species, which are nevertheless quite distinct, collected in 

 Pulo Pinang by Dr. Cantor, and by Dr. Jerdon in Southern 

 India. 



