254 Mr. W. H. Benson on new species of Helix. 



apice obtuso ; anfractibus 4 subplanatis, rapide crescentibus, ultimo 

 antice majori, non descendente ; apertura obliqua rotundato-lunata, 

 peristomate tenui margine dextro superne arcuato, columellari bre- 

 viter reflexiusculo. 



Diam. major 7, minor 5^, axis 3 mill. (spec, nostr.). 



Ilab. sub monte Capitis Leonis prope Camp's Bay, Prom. Bon. Spei. 



I found a single specimen of this delicate shell under trees and 

 fallen leaves in the ravine between the Lion's Head and Table 

 Mountain, near Camp's Bay. A single larger specimen unnamed, 

 but with the locality " Table Mountain " affixed to it, is in the 

 British Museum. 



The following shell described by PfeifFer at page 71. no. 5. of 

 the ' Zeitschrift fiir Malak.' for 1849, under my manuscript name, 

 from specimens received from me by Mr. Cuming, 1 had delayed 

 publishing, with the view of instituting a comparison with the 

 allied species H. rivularis, Krauss, which is also a denizen of 

 South Africa. I cannot do better than copy the characters given 

 by Pfeiffer. 



6. (249 a) Helix rariplicata, Benson. 



" Testa umbilicata depressa, tenuis, cornea, plicis arcuatis subdistan- 

 tibus munita ; spira parum elevata ; sutura profunda ; anfractus 4 

 convexi, ultimus teres, non descendens ; umbilicus angustus, per- 

 vius ; apertura parum obliqua, lunato-subcircularis ; peristoma sim- 

 plex, rectum, marginibus conniventibus. 



"Diam. maj. 4i-, min. 3|, alt. 2 mill." 



Ilab. in Prom. Bon. Spei. 



This shell I found in several places about Green Point from 

 April to November 1846. In the latter month it was alive in 

 great abundance chistering under loose stones in a barren tract 

 near the greater Light-House. During the winter season this 

 tract was inundated to a great extent by shallow fresh water. 



Near the great Light-House Green Point, at the Round Bat- 

 tery, Simonstown, and in Hottentot's Holland, I procured dead 

 specimens of a shell which appears to me to correspond with 

 Helix vernicosa, Krauss, taken by Wahlberg at Natal, but I have 

 not been able to make a comparison of specimens. I may here 

 note that I have not yet exhausted my new species of Helix from 

 the environs of Cape Town, and that three (if not four) new spe- 

 cies of Physa and an Ancylm inhabit the waters at the base of 

 Table Mountain. 



Genus Tornatellina, Beck. 



1. Tornatellina Cernica, nobis, n. s. 



Testa globoso-conica, tenui, striatula, striis exilissimis spiralibus ob- 

 solete decussata, pallide cornea, pellucida, nitida; spira conica. 



