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Show 804 MR. OLDFIELD THOMAS ON MAMMALS [NOV. 20, 16. OUREBIA HAGGARDI Thos. a. 2 • 190 miles E. of Lado, 23 Jan., 1900. (121.) b. $. Plain N.W. of Rudolf, Jan. ]900. (127.) c ?. 100 miles W . of Rudolf, 22 Jan., 1900. (142.) d. 6 . Near Sogodi, 5 March, 1900. (147.) 17. MADOQUA GUENTHERI Thos. Several specimens from the Webi Dawa, Somali, October 1899. 18. MADOQUA GUENTHERI SMITHII, subsp. n. a. Head-skin and skull, d. 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 guentheri proportionally more than is tbe 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 maxillae 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. guentheri (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 bullae on a plane surface, is 47*8 mm., as compared 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 tbe true M. guentheri that M. cavendishi does to M. kirki; 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. CERVICAPRA BOHOR Riipp. a-c. d cS $ • 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. d" 6 . 80 miles E. of Lado, 26 Feb., 1900. (144,145.) g. Skull, o". |