Afiictui .\ oii-iiiiuiiie Miillnscn. 4l'0 



distributetl as viciiia^ Smith. The two spocics arc very near 

 akin, but their Ujealities aie very distant, and, as the two 

 names are in existence, it may he ailvi.saldc to maintain 

 vidua for the Nyasaland race and sambouroueiisis for tliat 

 wliieh inhabits Kenya Cohiny. 



The striation of vidua is extremely tine and close, almost 

 smooth, and the dentition consists of a minnte mid-parietal 

 denticle ; a strong Uunella, sli-^htly hollowed on its right, 

 at the angle of paries and outer lip ; three very irregular 

 teeth on the outer lip, arising from a broad flat base 

 corresponding to a single exterior cavity ; three close 

 basal denticles, nearly equal in size, of u hieh the two on 

 the right are sometimes more deep- set and sometimes ab(nit 

 level with that on the left; and a conspicuous three-pronged 

 columellar fold. 



It hails from Nyasaland, Mt. Chiradzulu ; Zomba 

 {Johnstou) . 



In G. sambouroutnsis the striation is infiuitcsiraally 

 stronger and the sides of the spire more inclined to con- 

 vexity. The parietal himella has a tendency to incurvation 

 on its left ; the two right-hand basal denticles are, typically, 

 cousiilerably more deep-set than that on the left, and there is 

 usually a most minute additional tubercle on the columella, 

 just below the three-pronged fold, which 1 have been unable 

 to find in any specimen of vidua from Nyasaland. 



Huh. Kenya, Sambourou (AUuuud), Voi {Feather), 

 Laikipia Plateau {Kemp). 



Gulella {F/iciyulella) salutationis, sp. n. 

 (PI. XIV. fig. 38.) 



Differs from G. vicinaiu its smaller size and comparatively 

 more slender form ; its sculpture, moreover, is far fainter, 

 being entirely non-existent save for a few faint, irregular, 

 curved, oblHpie growth-lines. The dentition of the only two 

 specimens collected is as described above for vidua ; thire 

 is no sign of the small tubercle below thetiiple columellar 

 fold. The shell contains 5^ whorls and measures : long. 5*1, 

 lat. 1 i; apert., alt. T?, lat. OU ; last whorl 32 ram. 



Hab. Tanganyika, Dar-es-salaatn (Couuol/y) . 



This may eventually prove to be but a subspecies when 

 further series are collected, but its locality is rather remote, 

 and it ditleis far more from either suuibourotunsis or vidua 

 than tliev do frcjin each other. 



