76 Messrs. J. C. Melvlll and 3, H. Ponsonby on 



(c) custodita, in addition to the usual colmnellar, parietal, 

 and two internal labial ])lica3, possesses a third labial, the 

 uppermost of the three in situation, very deep-seated, and 

 often obscure. 



(d) elizabethensis. Nearly all the specimens seen by us 

 are albino, giving a distinctive appearance. 



(e) endoplax. This may possibly be synonymic with 

 Jickeli's var. gJobosa (Afr. Moll. t. 5. f. 11), also mentioned 

 in Nomencl. Hel. Viv., but we have not seen the typical 

 specimen. 



(f) frustiUum. This form is more elongate than the 

 type, while 



(g) kercea is cylindric in shape. 



But we are now inclined to agree with Mr. Buriiup, that 

 these names are hardly worth while perpetuating. 



8. Pupa griqualandica, M. & P. (PL I. figs. 8-10.) 



Ihipa griqualandica, Melvill & Ponsonty, Ann. & Mafr. Nat. Hist. ser. 6, 

 vol xi (1893) p. 22, pi. iii. fig. 9 ; Sturany, Siidafrik. Moll. (1898) 

 P- 71. 



Shell very minute, umbilicate, ovato-conical ; brown, 

 whorls 5, ventricose, much compressed, uniformly, closely, 

 lono-itudinally, finely striate, the body- whorl often dorsally 

 contracted and sulcate behind the peristome ; aperture oval 

 or roundly ovate, lip thickened, with five plaits, a sixth being 

 visible in some specimens likewise, this is probably always 

 present, but so deep-seated in some cases as not to be 

 observed, as it is wholly internal. These plaits are disposed 

 as follows : — Two parietal plaits, running parallel to each 

 other, both recurved and deeply penetrating ; a third runs 

 inwards from the labial sinus ; a fourth, small in the type 

 and co-type, large in specimens since collected, is basal and 

 dentiform ; the fifth, the columellar plait, is acinaciform, thin, 

 and deep-seated ; the sixth process, so often invisible exter- 

 nally, is basal and almost entirely internal. 



The measurements vary as follows : — 



Alt. 1-6 to 1-65, lat. 0-87 to 0*94 mm. 



Hah. Cradock {e coU. Rogers); Port Elizabeth {Ponsonhy); 

 Botanic Garden, Maritzburg {Burnup); Heidelberg; Dargle, 

 Natal {Miss Livingston ^- Burnup) ; Dukuduku, Zululand 

 {Toppin)\ Pretoria {Farquhar) ; (iriqualand [coll. Sykes). 



We figure a few of the more conspicuously interesting 

 forms of this w^onderful and complicate shell, selected from 

 the many excellent druwings of the species executed by 

 Mr, Burnup, in substitution of the original figure and Latin 

 description, both of which were insufficient in detail. 



