2()0 On a new Species and Subspecies of Eiinea. 



Ennea [Gulelhi) cadmani, sp. n. 



Shell cylinrirical, yellowish wliite, polished, shining; 

 whorls 6, the tirst three ret^ularly incrcasiiior, the last three 

 increasinf^ in length but not in breadth ; suture rather slip;htly 

 impressed, narrowly margined billow, the margin minutely 

 crenulated ; perforation narrow, deep ; labruni thick, wiiite, 

 retlexed, the margins joined by an opaque, white, parietal 

 callus ; aperture irregularly subquadrate, armed with a coarse, 

 erect, vertical, parietal lamella which is slightly twisted 



Ennea [Gitlella) cadmani, x 4. 



below, a protuberance on the upper portion of the outer 

 lip which partly fills the space between it and the parietal 

 lamella, while below this occurs a coarse downwardly curved 

 lamella ; at the base of the aperture and very interiorly 

 situate is an oblique nodular denticle, while in additi tn, 

 projecting from the broad columella margin, occurs a hori- 

 zontal lamella-like tooth. 



Alt. 5*7o, diam. maj. 2 mm. 



Aperture : alt. 1*25, diam. 1 mm. 



Hah. Idah, at an altitude of about 1300 feet, Zaria Pro- 

 vince, Northern Nigeria (//. Cadman). 



Ennea (Paucidentata) monodon zariaensis, Rubsp. n. 



Shell differing from the typical form from Gaboon* in its 

 larger sizf, much more cylindrical shape, and more oblique 

 columella lip. 



Alt. 10, diam. maj. 4 mm. 



Aperture: alt. 2*75, diam. I'O diam. 



Hub. Idali, at an altitude of about 11^00 feet, Zaria Pro- 

 vince, Nortiiern Nigeria {II. Cadman). 



* J. de Conchyliol. 1873, p. 330. 



