THE DIKDIKS 
627 
throat are vermiculated with blackish like the nape; but 
the forethroat and chin are white. The head has the long 
tuft on the crown vermiculated like the back, but the huffy 
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-buff. 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, \yi inches; length of hind foot, male, 7^ inches, female, 
8 inches; ear, 3^ inches. Greatest length of skull: male, 
4 t 9 ¥ inches, female, 4inches; length of narial chamber, 
male, 1 inches, female, i^i inches. The longest-horned 
male in a series of ten adults has horns 3^ inches long 
in a straight line and 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 
