tU South- African Species and Varieties o/Pupa. 79 



junctis, dextro supni angulatira curvato, basali et sinistro regu- 

 lariter arcuatis. Dcntes 4 profundi, 1 parietalis pliciformis, 

 columellaris 1 validus, palatales gcmini, punctiformes in faucibus. 

 " Alt. 3|, diam. max. 1|, alt. apert. 1, lat. 1 ram." {Bcettger.) 



A copy of tlie original figure is given. 



13. Pupa ovampoensis, ]\]. & P. (PI. II. fig. 16.) 



Fupa ovatnpoensis, Melv. & Pons. Ann. &. Mag. Nat. Hist. ser. 6, vol. xi. 



(1893) p. 22, pi. iii. fig. 9 j Sturauy, Siidafrik. Moll. (1898) p. 71. _ 

 Pupa ridibunda, Melv. & Pons. Ann. & Mag. Nat. Hist. ser. 7, vol. viii. 



(1901) p. 320, pi. ii. fig. 11. 



Shell minute, rimate, thin, brown ; whorls 5^, the apical 

 depressed, glassj, the rest very ventricose, impressed suturallj, 

 microscopically finely obliquely striate, in the more typical 

 form almost smooth ; occasionally lirate longitudinally ; 

 aperture round, lip pale brown, continuous, especially thick- 

 ened at the columellar margin, furnished with the following 

 processes: a thickened, often bifid, parietal plait; two labial 

 (the lower one, as a rule, the larger), sometimes situated more 

 deeply back"; a prominent obtuse basal tooth ; and columellar 

 plait, broad, flat, occasionally bifid, deep-seated. 



In the form ridibunda the parietal plait is very conspicu- 

 ously bifid and the basal tooth usually acute, but every inter- 

 mediate occurs. 



Alt. 2-25, lat. -97 ram. (maj.). 

 „ 2-3, „ -86 „ (min.). 



Hah. Ovampoland {E. L. Layard); Prieska {Dr. Gibbons); 

 Port Elizabeth (Farquhar) ] Rustenberg (McBean), lirate 

 variety ; Potchefstroom (Miss Livingston) ; Elandsberg Mts. 

 [Farquhar) , " ridibunda.''^ 



We thank Mr. Burnup for having cleared up the distribu- 

 tion of this species, of which the type came from the remote 

 Ovampoland. A variable shell in the disposition of its 

 peristomatal processes, but to be recognized by its round 

 continuous lip, long cylindrical form, with very ventricose 

 whorls. P. damarica, Ancey, may possibly be identical ; see 

 our remarks under that species, which has never been figured. 



We may add that Bijidaria quadridentata, Sterki, from 

 the Capitan Mountains, U.S.A., and a Mauritius species 

 very doubtfully referred to P. lienardiatia, Crosse, on the 

 authority of Dr. Penther, come near our species, though 

 both differ slightly in form and in disposition of dental 

 arrano;eraent. 



