THE DIKDIKS 627 



throat are vermiculated with blackish hke the nape; but 

 the forethroat and chin are white. The head has the long 

 tuft on the crown vermiculated like the back, but the buffy 

 annulations are distinctly lighter. The snout and proboscis 

 are bright tawny dorsally, but the sides of the face and the 

 back of the ears are lighter or ochraceous-bufif. The lips 

 and the inside of the ears are white. The anteorbital pore 

 and eyelids are black. 



The average measurements of adults in the flesh are: 

 length of head and body, male, 23^ inches, female, 25 inches ; 

 tail, I y^ inches ; length of hind foot, male, 7^ inches, female, 

 8 inches; ear, 3^^ inches. Greatest length of skull: male, 

 4iV inches, female, 4^ inches; length of narial chamber, 

 male, i^ inches, female, i^ inches. The longest-horned 

 male in a series of ten adults has horns 3iV inches long 

 in a straight line and i^ inches spread at the tips. Average 

 horns are a half inch less than these dimensions. 



A large series of specimens collected by the Rainey 

 expedition have been examined from the Northern Guaso 

 Nyiro near its junction with the Lakiundu and from the 

 region just north of this point on the Marsabit Road at 

 Merille and Longaya. Specimens have also been examined 

 from the juniper forest on the summit of Mount Lololokwi 

 at an elevation of six thousand feet. Other specimens from 

 the upper Turkwell River north of Mount Elgon, from 

 Lake Baringo, and from the type locality near Lake Ste- 

 fanie have been examined. The range of this species over- 

 laps that of the kirki group in the region watered by the 

 Northern Guaso Nyiro, where it is found associated every- 

 where with a much smaller race, kirki minor. 



Kirk Dikdik 



Rhynchotragus kirki 



Range. — From the Northern Guaso Nyiro River and 

 Lake Baringo southward through the Rift Valley and coast 

 drainage area to central German East Africa. 



The Kirk dikdik differs from the guentheri group of 

 the northern desert area by its much smaller proboscis and 

 the broad fulvous border to the under-parts. The skull 



