74: PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



triangularly reflexed, half concealing the narrow, but deep, 

 umbilicus. 



Diam. maj. 5-7 ; min. 5-0 ; alt. 4-2 ; apert. alt. 2-7 ; lat. 2-7 mm. 

 The largest specimen seen measures : Diam. 6*2 x 5*2 ; alt. 4-5 mm. 



Hah.—Mt. Manotsuri, 4,000 feet ; Elim ; Sibasa. 



Type in Kimberley Museum. 



Not unlike T. inclara (Morel.), in which, however, the umbilicus 

 is far less open and the spiral sculpture hardly visible under a 

 magnification of fifty, which shows this important feature very 

 clearly in the new species. 



Trachycystis suhpinguis, sp. nov. PL II, Figs. 2a-b. 



Shell small, depressed-conoid, perforate, thin, smooth, glossy, 

 transparent, pale corneous. Spire but little raised, sides straight, 

 apex sharp. Whorls 6, slowly and regularly increasing, rounded, 

 bluntly subcarinate on the upper portion of the periphery and sloping 

 thence to the base ; the 1| apical microscopically densely, but faintly, 

 punctate, remainder sculptured all over with faint, rather distant, 

 nearly straight, transverse striae interspersed with closer, much fainter 

 ones crossed by extremely close and faint wavy spiral striae ; suture 

 simple, well defined. Aperture oblique, lunate ; peristome simple, 

 acute ; outer lip practically straight in profile and hardly receding ; 

 columella short, weak, concave, margin shortly and narrowly 

 reflexed, not concealing the minute umbilicus. 



Diam. maj. 5-7 ; min. 5-2 ; alt. 3-6 ; apert. alt. 2-6 ; lat. 3-0 mm. 



Hab. — Natal. Pietermaritzburg (Connolly ; Burnup). 

 Transvaal. Mt. Manotsuri (Junod). 



This is the species mentioned in my Revised Reference List (1912) 

 as having been mistaken for the Helix pinguis of Krauss, which, 

 however, is described as having only 4|- whorls in a diameter of about 

 7 mm., and if properly represented in the British Museum is a 

 larger form of darker colour. The occurrence together of the 

 three Natalian species, T. planti, T. suhpinguis, and Lauria 

 dadion, so far north of the limits which might be expected to their 

 distribution, is distinctly remarkable. 



Genus Edouardia, Gude. 



The full reasons for the adoption of this generic name for nearly 

 all the African species heretofore placed in Pachnodus or Comdinus 

 will be given in a work now in course of publication ; they may 

 therefore be omitted from the present article. 



Edouardia drakenshergensis (Smith). PI. II, Figs. 6a-b. 



This species has never been figured, so by kind permission of the 

 Assistant Keeper of the Mollusca, I append an illustration of the 

 Type set in the British Museum. It was collected near Lydenburg 



