1893.] FEOM BRITISH CEIfTRAL AFRICA, 727 



which are lyrate in shape and bend forward at the apex. These 

 four species are as follows : — 



1. G. ellipsiprymmis^ , which extends from South Africa up the 

 Eastern coast to Somahland and the While Nile, and may be at 

 once recognized by the eUiptical white ring on the rump near the 

 base of the tail. 



2. C. craivsliayi, similar to the preceding, but of a much darker 

 bro\^Ti, and \dthout the ring on the rump. At present known only 

 from Lake MMeru. 



3. C. defassa.—T\ns, is the AntUope defassa (Euepp. Neue Wir- 



Skull and horns of Cohiis crawshayt. 



belth. Saug. p. 9, t. iii.), so-called from its Abyssinian vernacular 

 name " Defassa," which must therefore not be altered into defassus 

 as has been attempted by some authors, llerr Matschie (Sitzungsb. 

 Ges. naturf. Treund. Eerlin, 1892, p. 134) has lately pointed out 

 the differences between this Abyssinian form and the next, nearly- 

 allied, "West-African species. There are fine mounted specimens 

 of this Antelope in the gallery of the British Museum. 



4. C. unctuosus. — The aUied West-African form, of which we 

 frequently have examples living in the Society's Gardens and at 

 the present time have a single female specimen, has been generally 



' See P. Z. S. 1893, p. 505, pi. xxxix., for remarks on this species breeding 

 in our Gardens. 



Proc. Zool. Soc— 1893, No. XLIX. 49 



