92 TRUNCATELLINA OP SOUTH AFRICA. 



Transvaal: Johannesburg (McBean) ; Pretoria (Ponsonby 

 coll.) ; Potchefstroom (Miss Livingston) ; Heidelberg (Con- 

 nolly). Orange Free State: Bloemfontein (Connolly). 



Pupa perplexa BURNUP, in Melvill & Ponsonby, Ann. Mag. 

 N. H. (8), i, Jan. 1908, p. 80, pi. 1, f. 17, 18; Ann. Mag. (8), 

 vii, 408. Jaminia perplexa (Burnup), CONNOLLY, Ann. S. 

 Afr. Mus., xi, 1912, p. 183. 



Cradock may be selected as type locality. The long, strong 

 parietal lamella and strong though immersed (dorsal or sub- 

 dorsal) columellar lamella, distinguish it from all other known 

 South African species. 



"Twenty- four out of twenty-six specimens measured by me 

 show very little variation in dimensions, the remaining two, 

 both apparently mature, being somewhat more divergent, viz. : 



Largest, height 1.88, width 0.83 mm. 



Smallest, height 1.50, width 0.77 mm. 



"Judging by the descriptions and figures alone, for I have 

 not seen Jickeli's species, this shell must be akin to his P. 

 lardea, schilleri, and similis from Upper Nubia, whose aper- 

 tural processes seem arranged much on the same plan, its 

 nearest ally being the last named; simiUs is, however, about 

 one-fourth wider than the present species and has half a whorl 

 less, while the peristome is less expanded and the labrum less 

 bowed inwards and there is no callus. P. lardea and schilleri 

 are more divergent, being not so high as similis and broader 

 in proportion (Burnup). 



Among European species, perplexa is most like T. claustralis. 



25. TRUNCATELLINA PRETORIENSIS (Melv. & Pons.). PI. 10, 

 figs. 1, 2, 3. 



"Shell very minute, thin, ashy-brown, the apex flattened, 

 contabulate; whorls 5, very ventricose, delicately longitudi- 

 nally striate throughout, the last three of equal width ; aper- 

 ture round; peristome a little thickened, simple, reflexed at 

 the columellar margin. Length 1, width .55 mm. (M. & P., 

 pretoriensis) . 



' ' Shell minute, rimate, subcyliudrical, elliptical, thin, trans- 

 lucent, shining, very pale brown; spire elongate-turbiuate, 



