142 GIBBONS : NEW EAST AFRICAN LAND SHELLS. 



outer lip nearly parallel with columella, a trifle inflexed behind, 

 thickened internally about the middle; columella flattened, white; 

 on wall of the aperture a slight callous tubercle arises near but not , 

 from the inflexed termination of the outer lip. 



Zanzibar. One specimen dead under a bush. 



Allied to En7iea bicolor, Hutton, of the Mauritius. 



I have the pleasure of naming this species after the Editor 

 of tYiQ Journal of Conchology. 



Nanina Mozambicensis, Pfr. 



Mozambique and Zanzibar. Speke and Grant collected it at 

 Uzaramo and the Victoria Nyanza,* and V. der Decker in the 

 Seychelles (var. albo-picta). At Mozambique it occurs on the 

 Mainland on the stalks of a species of Carex ; on the Island of 

 Mozambique it is now extinct. The dead shells shew it to have 

 been a variety larger and more soUd than the type, and with a 

 more elevated spire. At Zanzibar it is to be found on the coral 

 islet Chapani, on grass, the baobab tree, &c.; all the specimens 

 I noticed belong to a very distinct variety — smaller, thinner and 

 more fragile than the type, of a pure milky-white color, and always 

 with a narrow band of brownish above the periphery; the whorls 

 also are more rounded and umbilicus almost obsolete. The 

 specimens from the interior appear to be larger than those of the 

 coast. 



The animal has the body narrow, dorsum high, faintly 

 granulose longitudinally: sides concave; behind shell it is rather 

 broader, with an obtusely rounded tail bearing a triangular sinus, 

 surmounted by a thick and rather short, rounded spine; color is 

 a lio-ht yellowish, sometimes tinged with brown, darker on the 

 head, dorsum and tentacles, the latter being tipped with dark 

 brown, a streak of which runs down the ocular pair and along 

 either side of dorsum to shell ; caudal spine is also dark brown. 



* Pioc. Zool. Soc. Mar. 8, 1S64. 



J.C. ii., May, 1S70 



