216 Mr. W. H. Benson on new species of Helices. 



polita, marginibus acutis expansiusculis, callo tenui junctis, inferiori 



valde arcuato, subreflexo ; umbilico lato, profundo, omnes anfractus 



exhibente, margine subcompresso. 

 Diam. major 47, minor 40, axis 15 mill. 

 Benson, J. A. S. vol. v. p. 351. 

 Pfeiffer, Monograph, vol. i. p. 395. no. 1028. 

 Hab. in montibus prseter fines provincial Bengaliae orientales versus 



septentrionem spectantes. 



The remaining species belong to the south-western termination 

 of the African continent, and are not the only species which 

 escaped the researches of Krauss in the immediate vicinity of 

 Cape Town. 



7. Helix Cotyledonis, nobis, n. s. 



T. imperforata, depresso-turbinata, tenui, laeviuscula, diaphana, cor- 

 neo-fusca, opaciter albo-zonata ; spira elevata, apice obtuso ; anfrac- 

 tibus 5, convexiusculis, fascia lata alba superficiali, fusco interrupte 

 striata, superne ornatis ; ultimo subtus convexo, rude radiato-sub- 

 plicato, fasciis duabus similibus angustis cincto ; apertura obliqua, 

 lunata, intus fuscata ; peristomate recto, acuto, margine columellari 

 breviter reflexo, arcuato, intrante, calloso ; callo umbilicum omnino 

 tegente. 



Diam. major 16, minor 14, axis 9 mill. 



Hab. prope Simon's Bay, P. B. S. 



I got a single fresh and perfect example adhering to the fleshy 

 leaf of a species of Cotyledon, among bushes, on the sand-heaps 

 near the Bound Battery at Simon's Town, Cape of Good Hope, 

 in October 1846. Weathered shells, which were whitish, with 

 a fuscous stain underneath, occurred in the drifting sands, with 

 the reversed Pupa Pottebergensis, Krauss, and Cyclostoma affine, 

 Sow. 



There is a single bad specimen of H. Cotyledonis in Case 25 of 

 the British Museum collection, without name or locality ; and in 

 Case 26 are two smaller examples, in worse condition, presented 

 by Professor M'Gillivray, and marked " from Simon's Bay." 



8. Helix vorticialisj nobis, n. s. 



T. late umbilicata, subdiscoidea, superne depresso-planata, tenui, ru- 

 fescente-cornea ; spira concaviuscula ; sutura profunda ; anfractibus 

 4, angustis, convexis, confertim radiato-plieatis, penultimo promi- 

 nente, ultimo subtus valde convexo ; umbilico lato, profundo, omnes 

 anfractus exhibente, margine subangulato ; apertura verticali, lu- 

 nata, subcompressa, marginibus rectis tenuibus, callo tenuissimo 

 junctis. 



Diam, major 6, minor 5, axis 3 mill. 



Hab. ad Promontorium Bonse Spei, rarior, sub lapidibus. 



Unfrequent near Three-anchor Bay, Green Point ; and at Camp 



