574 Hon. W. Rothschild on some 



Skull : greatest length 37*4 ; condylo-basal length 36 ; 

 zygomatic breadth 18*2; nasals 17 - 6x3"7; interorbital 

 breadth 6'2 ; breadth of brain-case 12'6 ; palatal length 21 ; 

 maxillary tooth-row 15; three anterior molariform teeth 6. 



Hob. Mindo, N.W. of Quito, Ecuador. Alt. 4200'. 



Type. Adult male. B.M. no. 13. 10. 24. 70. Original 

 number 163. Collected 3rd July, 1913, by Gilbert Hammond. 

 Presented by Oldfield Thomas. 



This is a representative of M. fuscata, with a light line 

 down the under surface as in certain of the Peruvian species. 

 It may be really closest to Osgood's M. madescens, but has 

 not that animal's warm colour, which is as in M. impavida 

 and other members of the murina group. Nor has it a white 

 tip to the tail. 



LXXIV. — Descriptions of some new Forms of Antelope, with 

 Notes. By the Hon. Walter Rothschild, F.R.S., Ph.D. 



Adenota kob and its allies. 

 The forms of this group are very puzzling, owing to their 

 undergoing a seasonal change of pelage. The yellow-eared 

 forms differ, after the change, by an increase of white round 

 the eye and in an increased appearance of black on the legs. 

 The white-eared forms after the change are much redder, 

 owing to the shedding of the black hairs, which are replaced 

 by rufous. 1 am of opinion that all the smaller kob antelopes 

 of this section, both yellow-eared and white-eared, are only 

 local races of one species, the oldest name for which is kob of 

 Erxleben, 1777, and, in point of distribution and coloration, 

 they should stand in the following order : — 



Adenota kob povsarguesi, Neura. 

 Congo. 



Adenota kob kob, Erxl. 



Gambia to Niger. 



Adenota kob neumanni, Rothsch. 

 District west of Lake Albert. 



Adenota kob thomasi, Neum. 

 Central and Southern Uganda. 



Adenota kob notata, Rothsch. 

 Southern Soudan, Ahmed Aga, &e. 



