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



striatula, sublsevigata, superne non nitente, lineis confertissimis 

 vix impressis, sub lente decussata, infra polita, translucente, viri- 

 descenti-cornea ; spira subconoidea, sutura impressa, anguste 

 marginata, apice obtuso ; anfractibus 4, gradatim accrescentibus, 

 convexiusculis, ultimo versus peripheriam obtusam depressiusculo, 

 subtus convexo ; apertura obliqua, suborbiculato-lunata ; peristo- 

 mate tenui, recto, acuto ; margine columellari oblique descendente, 

 superne breviter calloso-reflexo, perforationem obtegente. 



Diam. major 15|, minor 13, axis 9 mill. 



Habitat prope Colesberg. Detexit D. Amott. 



2. Helix Phytostylus, B., n. sp. 



H. testa imperforata, turbinato-subglobosa, tenui, irregulariter oblique 

 striatula, lineis minutissimis confertissimis spiralibus decussata, 

 albida, opaca, strigis obliquis, angustis, luteo-fuscis, translucenti- 

 bus, politis ornata, periomphalo, peristomate aperturaque intus 

 colore eodem tinctis ; spira convexa, conoidea, sutura impressa, 

 apice obtuso ; anfractibus 5, convexiusculis, ultimo rotundato, 

 subtus convexo, periomphalo anguste excavato ; apertura obliqua, 

 rotundato-lunari ; peristomate tenui, acuto ; margine columellari 

 bitorto, superne intrante, circulariter subexcavato, medio angulato- 

 dentato, setate calloso, aurantiaco. 



Diam. major 16, minor 14, axis 12 mill. 



Habitat ad Colesberg, et prope Riversdale. 



A single specimen from Colesberg was sent for examination 

 by Mr. E. Layard. Subsequently, I received from Kiversdale, 

 in the east part of Swellendam, specimens in various stages of 

 growth, collected by a relative, Mrs. J. F. Hudson. The younger 

 shells are more translucent, and the twisted columella has a 

 thinner and less angularly projecting laminar tooth, the base of 

 which, in adult specimens, has a resemblance to the truncation 

 observable in Achatina. 



Some specimens are marked with irregular, grey or translu 

 cent corneous spots. The hydrophanous colouring reminds the 

 observer of the banded white and corneous brown species, H. 

 Cotyledonis, B., which I discovered near Simonstown, and which 

 is evidently a near ally of H. Phytostylus, from the tendency to 

 a callous twist apparent at the upper part of the similarly 

 entering columella. 



3. Helix Capsula, B., n. sp. 



H. testa imperforata, subconoideo-depressa, tenui, oblique striatula, 

 sub lente minutissime obsolete decussata, translucente, polita, 

 viridescenti-cornea ; spira convexiuscula, sutura impressa, sub- 

 marginata, apice vix elevato, obtuso ; anfractibus 4, rapide accres- 

 centibus, convexiusculis, ultimo antice majore, subtus convexo, 

 medio excavato, peripheria rotundata ; apertura obliqua, orbiculato- 



