nev) Mollusca from South Africa. 315 



species, have come under our notice. These are now described, 

 togetlier with a few less noteworthy but equally interesting 

 SubuUnce. One of these, indeed, is a marvellous shell, and 

 perhaps ought to be made the type of a new genus. 



Ennea impervia^ sp. n. (PI. XVI. fig. 1.) 



E. testa subrimata, dolioliformi, cinerea, crassiuscula, apice per- 

 obtuso ; anfractibus 7-8, ventricosis, apud suturas impressis, 

 undique longitudinaliter oblique crasaicostulatis ; apertura ob- 

 longa ; peristomate albo-nitente, late incrassato, plicis vel dentibua 

 plurimis arctissime munito, plica parietal! valde intrants, con- 

 spicua, plicis labialibus bi- vel trifurcatis, interne involutis, 

 longeque penetrantibus ; plica columellari trifurcata, interne per- 

 intrante, aperturamque ipsam ad faucem fere obcludente. 



Long. 7*50, lat. 4*50 mm. 



Hab. Natal. 



Shell subperforate, tun-shaped, ashy in colour, slightly 

 thickened ; whorls seven or eight, ventricose, impressed at 

 the sutures, and longitudinally uniformly obliquely ribbed. 

 The aperture is oblong ; lip shining white, thickened, fortified 

 with several plaits and teeth, the parietal plait being deep- 

 seated, large, and well developed, the labial multifarious, 

 involute, and twice or thrice furcate, being likewise deep- 

 seated ; the columellar trifurcate, very deeply seated, and 

 almost closing the aperture. 



A very remarkable form, approaching E. infrendens^ 

 Gould. 



Two specimens. 



Ennea Queketti, sp. n. (PI. XVI. fig. 2.) 



E. testa obtuso-cylindrica, pellucida, subvitrea, apice obtuso ; an- 

 fractibus octo, tenuibus, ventricosulis, ad suturas impressis, sub 

 lente arete longitudinaliter undique striatis ; apertura rotunda ; 

 peristomate albido, plicis dentibusve tribus instructo, plica parie- 

 tal! magna, ac!nac!form!,intrante; dente labial! parvo, superficial! ; 

 plica columellari inconspicua, perintrante. 



Long. 13, lat. 6 mm. 



Hab. Natal. Two specimens. 



Shell large, white, vitreous, delicate, obtusely cylindrical ; 

 whorls eight, somewhat swollen, under a lens they are seen 

 to be uniformly closely obliquely striate; tlie mouth is 

 rounded, lip white, slightly expanded, furnished with three 

 processes, viz. a deeply seated parietal plait, a small superficial 

 labial tooth, and a deep seated but inconspicuous columellar 

 plait. 



