CONNOLLY: MOLLUSCA FROM NOETHERN TRANSVAAL. 75 



and consists of two shells, hardly mature, one dark corneous and 

 the other pale fulvous jn colour. 



The species is rather widely diffused in the neighbourhood of 

 Shilwane, with the darker coloured shells greatly predominating. 

 They vary a little in diameter, but the generality of specimens are 

 about 17 mm. in height and 13| in breadth. In its t5'-pical form 

 E. drakensbergensis is therefore more slender than natalensisj Krs., 

 a typical example of which is 17x15 mm., and less carinate than 

 carinifera, M. &. P., but the less slender examples approach very 

 nearly the unicoloured mutation of Krauss' species. 



Edouardia mcbeaniana (Bnp.). 



1905. E7ia {Pachnodus) mcbeaniana, Bnp., Proc. Malac. Soc. vi, 

 p. 302, pi. 16, figs. 1-2, 



Zra6.— Shilwane, 2,000 feet. 



A single typical example from the above locality marks the most 

 northern limit yet recorded for this species, whose southern boundary 

 seems to be near Pretoria. 



Subsp. lemaneensis, nov. 



A small series from Lemane, in the Spelonken district, are so con- 

 siderably more slender than the typical form that I think it desirable 

 to give them a varietal name. My reason for this is because it appears 

 that, although examples of the Edouardia and RhacJiis groups may 

 differ enormously within each species in coloration and marking, 

 they remain remarkably constant in contour. Since contour, 

 therefore, rather than coloration, must be accepted as the gauge 

 of specific value, any noteworthy departure from the normal is of 

 considerable importance. 



The local race differs from Type in comparative diameter, which 

 is only 11-2 X 100 mm. in a shell 16"1 mm. long, whereas it attains 

 130x11 "3 mm. in a typical example 15'0mm. in length; the 

 columellar margin, also, is rather less broadly reflexed and the 

 umbilicus more narrow than in the normal form, but the bluntness 

 of the carination agrees with that of mcbeaniana rather than any 

 other species. 



Edouardia transvaalensis (M. & P.). 



1893. Buliminus transvaalensis, M. & P., Ann. Nat. Hist, xii, p. 105, 

 pi. 3, fig. 6. 



^a&.— Elim. 



Two examples, agreeing perfectly with the Type. This is an 

 arboreal species, which in live condition is usually found coated with 

 pith or nmd. It must be very nearly akin to Pachnodus herbigradus, 

 Pilsbry, which inhabits the Belgian Congo. 



