190 Annals of the South African Museum. 



Free State and subfossil in a second South African locality, Newlauds, 

 near Kimberley, it may well be endemic to a great part of South- 

 equatorial Africa. 



IsiDORA CONTORTA (Micliaud). 



Although included in my Reference List, it is a little doubtful 

 whether the truly typical form of this northern species exists south of 

 the Zambesi, or whether the slightly immature examples from Grahams- 

 toAvu, which I have attributed to it, might not have developed into I. 

 tropica (Krauss). The latter is, in my opinion, merely the southern 

 race of contorta, a variable species from which not only tropica, but 

 several other named forms from various parts of the continent are 

 hardly varietally separable. 



