a. 



? 



b. 



2 



c. 



2 



d. 



d 



804 • ME. OLD1TELD THOMAS ON' MAMMALS [NOV. 20, 



16. OlTBEBIA IIAGGAEDI Thos. 



190 miles E. of Lado, 23 Jan., 1900. (121.) 

 Plain N.W. of Rudolf, Jan. 1900. (127.) 

 100 miles W. of Eudolf, 22 Jan., 1900. (142.) 

 Near Sogodi, 5 March, 1900. (147.) 



17. Madoqua guexthebi Thos. 



Several specimens from the Webi Dawa, Somali, October 1899. 



18. Madoqua guenthebi smithii, subsp. n. 



a. Head-skin and skull, 6 . About 30 miles S.E. of Lake 

 Stephanie, 16 Nov., 1899. 



Skull like that of the typical M. guentheri, but much larger, and 

 especially more bulky and less lightly built, its breadth and height 

 exceeding those in true gveniheri proportionally more than is the 

 case with the length. 



Horns and colour of head as in guentheri ; body-colours not yet 

 known. 



Dimensions of the typical skull : — 



Greatest length 119 mm.; basal length 102*5; greatest breadth 59 ; 

 nasals, length 14*5, combined breadth 16 ; interorbital breadth 39 ; 

 intertemporal breadth 42-5 ; breadth of brain-case 44*2 ; gnathion 

 to junction of nasals and maxilke 45*5 ; gnathion to orbit 59 ; 

 gnathion to front of alveolus of p. 2 29*2; length of upper tooth- 

 series 37. Horn, in straight line, 69. 



Type. Male. Specimen a above. B.M. No. 0.11.7.13. Collected 

 by Dr. Donaldson Smith. 



A comparison of the above measurements with those given of 

 the type of M. giteniheri (P. Z. S. 1894, p. 326) shows how much 

 larger the present animal is, especially as the type was a female, 

 and in this group the females are rather larger than the males. 

 The height of the crown of M. g. smithii, when the skull is resting 

 on the molars and bulla? on a plane surface, is 47'8 mm., as com- 

 pared with 44, 43-8, 43, and 42 # 5 in four male specimens of the 

 typical form. A good male skull of guentheri in the collection 

 measures 96 mm. in basal length by 53 in breadth, and the majority 

 of specimens are decidedly smaller than this. 



This fine Dik-Dik, which I have named in honour of its donor 

 and discoverer, evidently bears very much the same relationship 

 to the true M. guentheri that M. eavenduhi does to M. hirl i ; but as 

 there is a great probability that specimens intermediate in size will 

 turn up, I think it wise to describe it as a subspecies rather than 

 species. 



19. Cebvicapba bohob Kiipp. 



a-c. 6 6 2- 150 miles E. of Lado, 9 & 10 Feb., 1900. (133, 

 135, 136.) 



d. 2 ■ 90 miles E. of Lado, 20 Feb., 1900. (143.) 



e, f. imm. 6 6 . 80 miles E. of Lado, 26 Feb.. 1900. (144, 145.) 

 g. Skull. J. 



