164 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



The specimens from Kenica are a trifle more depressed than those 

 from Baringo, and the aperture appears to be a trifle longer. 



3. ZiNGis Uregoeii, n.sp. Fig. 4. 



Testa globosa, anguste perforata, tenuis, sub-pellueida, pallide vel 

 fusco-cornea, supra peripheriam zona rufa vel pallida cincta, epider- 

 mide tenuissima induta ; spira convexe conoidea, ad apicem sub- 

 acuminata ; anfractus 6, convexi, sublente crescentes, lineis incrementi 

 obliquis tenuibus sculpti, ultimus magnus, inflatus, antice paulo 

 descendens ; apertura leviter obli(iua, late lunata ; peristoma tenue, 

 simplex, margine columellari ad insertionem breviter expanse, reflexo, 

 lilaceo, umbilicum angustissimum semiobtegente. Diam. niaj. 16, mint. 

 13 mm. ; alt. 13 mm. ; apertura 8 mm. longa et lata. 



Hah. — Lowest forest zone, Kenia. 



There are three styles of colouration among the specimens of this 

 species. Some are uniformly brownish horn colour, a little paler 

 beneath the suture, and in the umbilical region. Others have a 

 similar ground tint, but are ornamented with a pale narrow zone a 

 little above the periphery, and, finally, in other examples this pale 

 band is replacc^l by one of a dark red tint. 



4. Trochonanina. Mozambicensis, Pfeiffer. 



Hah. — Sabaki Valley, west of Lugard Falls ; Kibwezi ; shores of 

 Lake Elmeteita ; Alngaria. 



This species varies so much, both in form and sculpture, that it is 

 difficult to recognise the extreme foi'ms as belonging to one and the 

 same species. A single specimen from the Sabaki Valley has very 

 strong sculpture on the upper siu'faco, coarser than in the type, and 

 a well-marked peripherial keel. The two examples from Kibwezi are 

 much more finely sculptured, have less convex whorls, and a less 

 pronounced keel. Finally the specimens from Lake Elmeteita and 

 Alngaria are still more finely striated above, but as acutely carinate 

 as the very strongly sculptured form from Sabaki. 



5. Pell A, sp. 



Hah. — Guaso Laschau and Alngaria. 



Three specimens, two immature and one apparently adult, but 

 damaged and repaired, appear to belong to an uudescribed 

 species. 



6. BuLiJiiNus (Eachis) rhodotjenia. Martens. 



B. {Rachis) rhodotcenia, Martens, Von der Decken's Reisen in Ost- 

 Afrika, vol. iii. part 1, p. 59, pi. ii. fig. 2; id. Monatsb. 

 Akad. Wissensch. Berlin, 1878, pi. ii. fig. 7. 



Hah. — On acacia trees in the Sabaki Valley, east and west of the 

 Lugard Falls ; also summit of Mt. Mbololo (Gregory), 



Dr. Gregory found this species very abundant in the above- 

 mentioned region. As described by Dr. Von ^lartens it is remarkably 

 variable in colour, and only a series of coloured figures would properly 

 demonstrate this variation. 



The rose-coloured zone in the umbilical region is constant in all the 

 examples examined, but the I'osy-band below the suture, present in all 



