140 PHASIS-TRACHYCYSTIS. 



H. (Pella) bathycoele M. & P., Ann. Mag. N. H. (6) ix, p. 89, 

 t. 5, f. 4. 



Conspicuous for its flattened upper whorls, as well as its deep 

 perspective umbilicus ; the whole surface of the shell being decor- 

 ated with fine longitudinal line. 



P. BURNUPI Melvill & Ponsonby. PI. 35, fig. 5. 



Shell profoundly and narrowly umbilicated, depressed ; brownish- 

 horny, satiny, thin, somewhat pellucid. Whorls 4, convex, closely, 

 obliquely, longitudinally ribbed-plicate throughout; at the sutures 

 compressed ; the last whorl compressed, semi-convex below. Spire 

 depressed, apex obtuse. Aperture obliquely lunar, thin ; peristome 

 simple, reflexed at the umbilicus. 



Alt. 5, diam. 7 mill. (M. & P.) 



Cope's Folly, near Maritzburg, S. Africa. 



Helix (Pella) burnupi M. & P., Ann. Mag. N. H. (6), ix, p. 239, 

 t. 13, f. 6 (Sept., 1892.) 



More depressed than H. bisculpta Benson, but of allied character, 

 the whorls being very finely obliquely costoplicate, compressed at 

 the sutures, the somewhat oblique mouth -thin, reflected at the col- 

 umellar margin near the umbilicus, which is deep, but narrow. 

 Several specimens. (3/. & P.) 



P. LiPvicosTATA Melvill & Ponsonby. PI. 35, fig. 9. 



Shell slightly depressed, rugulose, thin, corneous, olive-blackish, 

 encircled by close, irregular line ; whorls 4, rapidly increasing ; 

 umbilicus deep, exceeding one-third the diameter of the shell ; aper- 

 ture lunar, peristome simple, straight, thin. 



Alt. li, breadth 2* mill. (M. & P.) 



East Griqualand, S. Africa. 



Helix (Pella} liricostata M. & P., Ann. Mag. N. H. (6), viii, p. 

 239; ix, p. 94, t. 5, f. 1. 



An extremely interesting little species of dark horny texture 

 throughout, beautifully longitudinally sculptured with oblique, 

 radiating line. This shell is allied to H. rivularis Krauss, judging 

 from his figure, but we have not examined the shell itself. (M. 



