146 Annals of the South African Museum. 



Diam. maj. 4'5 ; min. 3'5 ; alt. 2-2 ; Aperfc., lat. 1-8, alt. 1-6 mm. 

 Type in British Museum. 



Hab. TRANSVAAL. Zwart Kop, Pretoria ; Buiskop ; Pietersburg 

 (Connolly) . 



The foregoing photographs give some idea of the form of rivularis 

 and its variety, compared with ordinaria, M. & P. Densestriata differs 

 from Krauss' type in having slightly, though very noticeably, closer 

 striation, but agrees with it in all other respects, and does not appear 

 to be specifically separable. 



Nobre has recently recorded rivularis from Angola, but this is 

 unlikely to be correct. 



271. TRACHYCYSTIS RUTILANS, Melv. & Pons. [S.A.M.] 



1908 Trachycy&tis rutilans, M. &P., A.M.N.H. i. p. 135. pi. 7, f. 9. D.F. 

 Type in British Museum. 

 Hab. NATAL. Alexandra Park, Pietermaritzburg (Burnup). 



272. TRACHYCYSTIS SABULETORUM (Benson). [S.A.M.] 

 1851 Helix sabuletorum, Bs., A.M.N.H. vii. p. 105. D. 



1853 Pf r ., Mon. Hel. iii. p. 96. D. 



Eve., Conch. Icon. pi. 174, f. 1180. D.F. 



1854 ,; Pfr., Conch. Cab. p. 414. pi. 147 (1853), 



f. 16, 17. D.F. 

 1887 Helix (Pella) sabuletorum, Bs., Tryon, Man. of Conch, iii. 



p. 107. pi. 20, f. 83. D.F. 



Specimens ex auct. in University Museum of Zoology, Cambridge, 



Hab. CAPE OP GOOD HOPE. Hout Bay; Strand not far from 



Somerset; Kalk Bay (fide Benson). Stumpnose (Gould). Her- 



manus (Lightfoot). Generally distributed along the coast of the 



Cape Peninsula. 



273. TRACHYCYSTIS SCOLOPENDRA, Melv. & Pons. [S.A.M.] 



1903 Trachycystis scolopendra, M. & P., A.M.N.H. xii. p. 603. pi. 32, 

 f. 3. D.F. 



Type in British Museum. 



Hab. NATAL. Port Shepstone ; Bqueefa ; Durban; Lower 

 Umkomaas (Burnup). Umzirnkulu (Purcell). 



CAPE OF GOOD HOPE. Port St. John's (Shortridge). Pirie 

 (Godfrey). 



