146 Annals of the South African Museum. 
Diam. maj. 4-5; min. 3°5; alt. 2:2; Apert., lat. 1°8, alt. 1-6 mm. 
Type in British Museum. 
Hab. Transvaau. Zwart Kop, Pretoria; Buiskop ; Pietersburg 
(Connolly). 
The foregoing photographs give some idea of the form of rwularis 
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. 
Nobré has recently recorded rivularis from Angola, but this is 
unlikely to be correct. 
271. TracHycystis RuTILANS, Melv. & Pons. [S.A.M.] 
1908 Trachycystis rutilans, M.& P., A.M.N.H.i. p. 135. pl.7,£.9. DF. 
Type in British Museum. 
Hab. Natau, Alexandra Park, Pietermaritzburg (Burnup). 
272. TRACHYCYSTIS SABULETORUM (Benson). [S.A.M.] 
1851 Helix sabuletorum, Bs., A.M.N.H. vii. p. 105. D. 
1853 2 seit, Monel inp 96. 7D: 
_ 3 ,, ve., Conch. Icon. pl. 174, f.1180. DF. 
1854 a ,», Pfr., Conch. Cab. p. 414. pl. 147 (1853), 
sel ae Uy a A 
1887 Helix (Pella) sabuletorwm, Bs., Tryon, Man. of Conch. iii. 
p. LOT. pl 20) -£.583.- .DF: 
Specimens ex auct. in University Museum of Zoology, Cambridge. 
Hab. Care oF Goop Horr. 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. pl. 32, 
ges Pan OI 
Type in British Museum. 
Hab. Natat. Port Shepstone; Equeefa; Durban; Lower 
Umkomaas (Burnup). Umzimkulu (Purcell). 
Cape oF Goop Horr. Port St. John’s (Shortridge). Pirie 
(Godfrey). 
