Reference List of South African Non-marine Mollusca. 133 



Type in Senckenberg Museum, Frankfurt. 



Hob. DAMARALAND. Huleb, S. of Usakos (Eintelen). 



GENUS TEACHYCYSTIS, Pilsbry, 1893. 



(Man. of Conch, viii. p. 136, and ix. p. 37.) 

 ( = Pella, Albers, 1860 (pars), nee Stephens, in Coleoptera, 1835.) 



Type of Genus, T. bisculpta (Bs.). 



During recent years this Genus has been a convenient receptacle 

 for a large number of small South African helicoids, whose soft parts 

 are mostly unknown, and whose conchological characters do not 

 admit of their inclusion in other South African Genera. It has long 

 been obvious that, as more becomes known of the animals, the 

 Genus will have to undergo considerable revision. The fact, too, of 

 bisculpta standing as the type will enormously restrict Trachycystis 

 s.s., as its animal is a very peculiar one, to which only charybdis, 

 and probably tollini, vorticialis, and hartvigiana are near akin. 



227. TBACHYCYSTIS ACTINOTRICHA (Melv. & Pons.). [S.A.M.] 



1892 Helix (Pella) actinotricha, M. & P., A.M.N.H. x. p. 238. pi. 13, 



f. 5. D.F. 



1893 Phasis (Trachycystis) actinotricha, M. & P., Pilsb., Man. of 



Conch, viii. p. 143. pi. 35, f. 14. D.F. 

 Type in British Museum. 



Hab. NATAL. Pietermaritzburg ; Karkloof ; Nottingham Eoad 

 (Burnup) . 



228. TRACHYCYSTIS ^NEA (Krauss). 



1848 Helix anea, Krs., Siidafr. Moll. p. 75. pi. 4, f. 18. D.F. 



Pfr., Zeitschr. f. Malak. p. 92. D. 



1853 Mon. Hel. iii. p. 68. D. 



1854 Eve., Conch. Icon. pi. 189, f. 1320. D.F. 

 1887 Helix (Pclla) cenea, Krs., Tryon, Man. of Conch, iii. p. 105. 



pi. 20, f. 71. D.F. 

 Type in Stuttgart Museum. 

 Hab. NATAL (Wahlberg). 



229. TRACHYCYSTIS ALCOCKI, Melv. & Pons. [S.A.M.] 



1895 Helix (Trachycystis) alcocJci, M. & P., A.M.N.H. xv. p. 164. 

 pi. 12, f. 2. D.F. 



