300 



NOTES OX A SMALL COLLECTION OF SHELLS FROM THE 

 VICTORIA FALLS, ZAMBESI RIVER, WITH DESCRIPTIONS OF 

 NEW SPECIES. 



By H. B. Pkeston, F.Z.S. 



Head lith April, 1905. 



The shells which form the subject-matter of the present paper are 

 part of a small collection made by Mr. J. Morrell during a recent visit 

 to the Victoria Falls. 



Melania. Victoria, Dohrn. 

 Collected in great quantity. 



VlTIPAKA CAPILLATA, Frfld. 



A fair number taken. 



ViVIPARA DENSESTRIATA, n.sp. Fig. 2. 



Shell much eroded at the apex, perforate, conically turbinated, thin, 

 rich brown ; whorls 5, somewhat angulated, the body -whorl slightly 

 keeled at the peripheiy, sculptured throughout with very fine wavy 

 spiral striae ; suture deeply impressed, crenulated ; peristome thin, 



1 2 



black ; umbilicus very narrow ; columella curved, extending into 

 a thin callosity which reaches the lip above ; aperture rotundly ovate ; 

 interior of shell pale brown, glossj'. 



Alt. 25*25 mm. ; diam, maj. 205 mm. Aperture, alt. 15-5 mm. ; 

 diam. 10 mm. 



Sab. — Just above Victoria Falls, Zambesi lliver. 



Cleopatra Morrelli, n.sp. Fig. 3. 



Shell much eroded at the apex, pyramidally conical, thin, pale 

 yellowish brown, encircled by one or more rich dark-brown bands, 

 increasing to four on the body-whorl ; whorls 5, finely transversely 

 striated with lines of growth ; suture impressed ; umbilicus narrow ; 

 peristome thin, slightly expanded below ; columella curved and some- 

 what reflexed over the umbilicus ; aperture oval ; operculum shallowly 

 concave, horny. 



