324 



MB. O. THOMAS ON THE DWARF 



[Apr. 3, 



characters that divide them are practically those brought out by 

 Dr. GHinther in his description of the latter l , at least so far as the 

 skulls and teeth are concerned. 



Fig. 1. 



Skull of Madoqua guentheri, side view. Reduced. 



The first species to be described belongs to the Tcirki section, and 

 of this, which I propose to name in honour of Dr. Griinther, who 

 first described the remarkable cranial peculiarities of the members 

 of the section, the Museum possesses the following material : — 



a. Immature skull, J • Central Somaliland. E. Lort Phillips. 



B.M. 36.11.19.2 2 . 



b. Adult skull, $. Central Ogaden, 3000 feet, Aug. 1893. 



Capt. H. G-. C. Swayne. 94.2.21.18. Type. 



c. d. 2 ad. skins, $ . Central Ogaden, 3000 feet. Aug. 1893. 



Capt. H. G. C. Swayne. 94.2.21.16,17. 



Taking as the type the skull b, which in all probability belongs 

 to one or other of the skins c, d, the species may be briefly 

 diagnosed as : — 



Madoqua gttenthebi, sp. n. 



Essential characters of M. JcirJci, but the lower, premaxillary 

 part of muzzle much longer and narrower, while the nasals are 

 much shorter. Tip of nasals, and also the front edge of the upper 

 part of the secondary process of the inaxillae, where it meets the 

 nasals, level with the front edge of p^4 instead of P-J2. Pre- 

 maxillae not reaching to nasals. Breadth of muzzle halfway 

 between gnathion and pJ2 less than a quarter the distance 



1 P. Z. S. 1880, p. 17. 



2 The skull mentioned by Sclater, P. Z. S. 1886, p. 504. The skin referred 

 to at the same time, as is clearly shown by its size and other characters, did 

 not really belong, as was supposed, to this skull, but to another, younger one 

 (86.11.19.3), and is referable to the species described below as M.phillipsi. 



