Reference List of South African Non-marine Mollusca. 239 



505. SEGMENTINA PLANODISCUS, Melv. & Pons. [S.A.M.] 



1897 Planorbis (Scgmentind) planodiscus, M. & P., A.M.N.H. xix. 



p. 638. pi. 17, f. 10. D.F. 



1898 M. & P., Stur., S.A. Moll. 



p. 77. N. 



Type in British Museum. 

 Hab. NATAL. Umgeni Valley, near Durban (Burnup). 



GENUS ANCYLUS, Geoffrey, 1767. 

 (Coquilles de Paris, pp. 13, 122.) 



Type of Genus, A. flumatilis (Lin.). 



SECTION BUENUPIA, Walker, 1912. 

 (Nautilus, xxv. p. 139.) 



Type of Section, A. caffer, Krs. 



506. ANCYLUS CAFFER, Krs. 



1848 Ancylus caffer, Krs., Siidafr. Moll. p. 70. pi. 4, f. 13. D.F. 

 1859 ,, gaulus, Gould, Proc. Boston Soc. Nat. Hist. vii. p. 40. D. 

 1862 ,, Otia Conch, p. 106. D. 



,, ,, caffer, Krs., Bgt., Spicil. malac. p. 193. D. 



1872 caffra Sow., Conch. Icon. pi. 1, f. 5. D.F. 

 1882 caffer Cless., Conch. Cab. p. 36. pi. 4, f. 11. D.F. 



Type of caffer in Stuttgart Museum; gaulus in U.S. Nat. Mus. 

 Washington. 



Hab. NATAL. Pietermaritzburg (Krauss). Umkomaas ; Ton- 

 gaat ; Equeefa Eiver ; Imputyni and Inkwalini streams near Pieter- 

 maritzburg (Burnup) . 



CAPE OF GOOD HOPE (gaulus, Stirnpson). 



var. NAN us, Walker. 



1912 Ancylus caffer, Krs. , var. nanus, Walker, Nautilus, xxv. p. 139. D. 



Type in coll. Walker. 



Hab. NATAL. Karkloof stream (Taynton). Pietermaritzburg 

 (in coll. Ponsonby). 



var. GORDONENSIS, Melv. & Pons. 



1903 Ancylus gordonensis, M.&P., A.M.N.H.xii.p.606.pl.31,f.2. D.F. 

 1912 caffer, Krs., var. gordonensis, M. & P., Walker, Nautilus, 

 xxv. p. 140. L, 



