ON SOUTH AFRICAN ENNE^. 33 



given, and their dimensions as taken by me will be found in 

 the text. The original figure of the typical form does not 

 require to be replaced, except for the convenience of 

 having all the figures to be compared of one magnifica- 

 tion. 



The original description adequately dilferentiates the 

 species, but, for the sake of convenience in comparison, it 

 has been deemed advisable to re-describe it here, where also 

 will be found an amended description of var, disc re pans 

 Stur., and an original description of a new variety with 

 which I have much pleasure in associating the name of the 

 learned author of the species, who has rendered me such 

 matei'ial help in the present study. 



Ennea isipingoensis Sturany, f . typica. PI. Ill, 



fig. 1. 



Ennea isipingoensis Stur., Anz. k. Akad. Wissensch. Wien (1898), 

 No. xvi, p. 157 (reprint p. 5) ; Sturany, Siidafrik. Moll. (1898), p. 27, 

 pi. i, fig. 19. 



Ennea isipingoensis var. eylindrica Stur., ibid., ibid. , fig. 22. 



Ennea isipingoensis Star.; (sic) Connolly, Ann. S. Af. Mus., vol. 

 xi (1912), p. 77. 



Shell small, cylindric-oval, tapering towards the blunt apex, 

 neai-ly white, umbilicate ; whorls 7h, very convex, separated 

 by very deep, almost channelled sutures, and very strongly 

 transversely ribbed except the embryonal whorls, which are 

 smooth, and immediately behind the peristome where the ribs 

 become finer ; the last whorl is thickened at the base, forming 

 a callosity almost encircling the umbilicus, and then becomes 

 constricted before expanding to form the peristome ; aperture 

 small roundish and furnished with the following plaits : A 

 strong parietal plait arising higher on the body-whorl than 

 the peristome and passing thence, embracing the parietal 

 wall, to the interior of the shell ; a long, strong squarish- 

 pointed, tooth-like plait, almost bifid, arising near the margin 

 and about the middle of the labrum, extending nearly to the 



VOL. 3, PAET 1. 3 



