On a new Oribi from British East Africa. 177 



Fig. 17. Pronotum of Cyrtotria nyasce, sp. n., $ , dorsal and lateral views. 

 X 4. 



Fig. 18. Pronotum of Cyrtotria scabricollis, Gerst., S, dorsal and lateral 

 views. X 4. 



Fig. 19. Pronotum of Cyrtotria jalke, Gig.-Tos, $ , ventral and three- 

 quarter views, X 3. 



Fig. 20. Plntysilpha murina, Walii., cT, left tegmen removed and shown 

 from beneath. X I5. 



Fig. 21. Pronotum of Cyrtotria latipennis, Kirby, (5* , three-quarter view. 

 X 3. 



Fig. 22. Pronotum of Pilema mombasee, sp. n., $, dorsal view, x 3. 



Fig. 23. Ditto, ditto, lateral view. X 3. 



Fig. 24. Pronotum of Cyrtotria scabricollis, Gerst., $ , dorsal and 

 lateral views, x 4. 



Fig. 25. Thorax oi Bantuaferox, sp. n., $, dorsal view, x 3. 



XXVII. — On a new Oribi obtained by Major Powell-Cotton 

 in British East Africa. By Oldfield ThoMAS and R. C. 

 Wroughton. 



The Natural History Museum has recently received from 

 Major Powell-Cotton some specimens of Oribi for identitica- 

 tion. Amongst them are several from the Guas-ngeshu 

 Plateau, E. of Mt. Elgon, which appear to us to represent a 

 new species. 



The material available for comparison in the Museum, 

 though scanty, seems to indicate that North-eastern Africa 

 {i. e. north of Equator and east of 25°) contains four already- 

 known forms, viz. : — (1) 0. montana, Cretzsclim., in Abys- 

 sinia and the Soudan, occupying the whole area down to 

 5° N. latitude, and distinguishable by its short slight liorns ; 

 (2) 0. harjgardi, Thos., on the coast; (3) 0. kenyce^ Meinerzh., 

 round Mt. Kenya ; and (-4) 0. goslingi, Thos. & Wrought., 

 from the Welle Basin. 



Of tiiese 0. kenya>, by its bhack tail and narrow preorbital 

 fossa, shows unmistakable affinity with the more southern 

 form 0. hastata, Peters, from Mozambique; and 0. haggardi 

 differs from all the rest by its shallow skull and by the com- 

 pression of its horns posteriorly so as to make a more or les3 

 distinctly marked longitudinal ridge. 



From 0. montana the present species is at once separable 

 by its long stout horns, while from 0. goslingi it ditfers in 

 wanting the black blaze on the face which is so characteristic 

 of that animal. 



Ann. cC- Mag. X. [list. Ser. 8. Vol. i. 12 



