200 . "MR. H. B. PRESTON ON AGNATHOUS : 



prnch broader forin, the crenulation at the suture is a]so con- 

 siderably finer, and it also lacks the small parietal denticle of that 

 species. 



Alt. 9-25, diam. maj. 6-25 mm. 



Aperture : alt. 4, diam. 3-25 mm. 



Hob. Nyika Range, ISTyassaland. 



Ennea fortidentata was described by Mr. E. A. Smith, in the 

 year 1890, from specimens collected by Mr. Last at Mamboia, 

 German East Africa, and in 1897 a number of specimens of an 

 Ennea were received at the British Museum from Sir H. H. 

 Johnston which had been collected far to the south on the Nyika 

 Range in Nyassaland *. As the dentition appeared to be nearly 

 identical these specimens were considered to be a variety of 

 E . fo7-tidentata and have been regarded as such until the present 

 time. Through the courtesy of Mr. Smith I have now been able 

 to examine both the type specimens of E . fortidentata and also 

 the aeries of shells from Nyassaland, besides, through the kindness 

 of Mr. A. Blayney Percival, a vast number of fairly typical 

 specimens of that species from Mt. Elgon in Uganda, with the 

 result that I am forced to the conclusion that the Nyassaland 

 shells are quite distinct from those collected at Mamboia and more 

 recently on Mt. Elgon. 



The type of E. nyikaensis is in the British Museum. 



Ennea carea, sp. n. (PI. XXXII. figs. 13, 13«.) 



Shell small, cylindrical, white, smooth, polished, shining ; 

 whorls 6, very flat, the last broad ; sutures incised, narrowly 

 margined above ; columella arched above ; aperture irregularly 

 subquadrate, armed with a nodulous, parietal lamella, two diver- 

 gent lamellse on the columella and a bifui-cate lamella on the 

 upper margin of the outer lip ; labrum whitish, thickened, 

 scarcely reflexed. 



Alt. 3-25, diam. maj. '75 mm. 



Hah. Gazi, British East Afiica [Robin Kemp). 



Ennea copiosa, sp. n. (PI. XXXII. figs. 16, 16«.) 



Shell cylindrically ovate, with very obtuse apex, thin, trans- 

 parent, polished, shining, vitreous, whitish ; whorls 6|, the first 

 four and a half regularly increasing in length and breadth, the 

 penultimate increasing propoi-tionately in length but not much in 

 breadth, the last whorl increasing in length but considerably 

 diminishing in breadth, marked only on the upper whorls with 

 oblique, transverse striae, the latter half of the last whorl and the 

 base of the shell being finely costulate, especially round the 

 umbilical area : suture impressed, narrowly margined below and 

 showing occasional traces of nodulous crenellation ; umbilical 

 depression ovate, moderately open and deep ; columella very 



* Proc. Zool. Soc. London, 1899, p. 581. 



