On the Land-MoUuscan Fauna of Rhodesia. 



G9 



known from tlie Philippine and Sunda Islands, from the 

 Indian I'^nipiro, Iliniahiya (1 l/JOO'), Ceylon, and Madagascar. 

 /*. shoeaiius differs t'roni its nearest ally, I'.saltanSj Bourne, 

 ])articularly in the dimensions. 



VI. — Additions to the Land-Molluscan Fauna of Rhodesia. 

 By 11. B. Preston. 



Slrepta.cis r/ioandaensis, sp. n. (Fig". 1.) 



Shell perforate, roundly ovate, moderately solid, cream- 

 coloured ; whorls 5|, the earlier whorls regularly increasing-, 

 flattish, the last two rapidly increasing and rounded, the last 

 ascending in front, sculptured with indistinct, rather closely 

 set, transverse, arcuate riblets which are more a})parent in 

 the subsutural region ; suture impressed, regularly crenellatc 

 below by the terminations of the transverse riblets ; base of 

 shell rounded, almost smooth ; umbilicus moderately narrow, 



Fig. 1, — Streptaxis givandaensis. Fig. '2. — Kaliella victories. 



deep, partly overhung by tlie outward expansion of the colu- 

 mella ; columella outwardly broadened, descending obliquely 

 in a gentle curve, diffused above into a rather thin well- 

 defined callus, which reaches the upper margin of the labrum ; 

 labrum somewhat reflexed, receding above to form a shallow 

 sinus; aperture edentulate, irregularly subquadrate.^ 



Alt. 16; diam. maj. 12, diam. min. 11 mm. 



Aperture : alt, 8, diam. 6 mm. 



Hab. Near the Geelong Mine, Gwanda District, Rhodesia. 



