KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 48, N:o 5, 165 
patch on the crown is present in both races. The colour of the face is fawn with 
a dusky blaze in the Guaso Nyiri race (Pl. XIV fig. 3), more bright rufous in the 
Kilimanjaro specimens. The colour of the outside of the ears is »dark fawn» in my 
specimens, »buff» in those from Kilimanjaro, the terminal portion is black in both. 
The mesial dark dorsal streak is in consequence of the general dark colour not very 
apparent before it becomes black on the rump, and it is continued on the tail, where 
it, however, is concealed in the bucks by the long white hairs on the terminal por- 
tion of this organ. The black stripes on the buttocks, and the black tufts on the 
hind legs are developed as usual. The black spots as well on fore as hind legs in 
the place where the lateral hoofs are situated in other antelopes, and the black spot 
on the heel are perhaps more pronounced than in the Kilimanjaro race. 
These differences in colour between the Impalas from Guaso Nyiri and Kili- 
manjaro are also supported by cranial differences as the following measurements 
indicate. 
a Guaso Nyiri Kilimanjaro 
ata a il ge ge 
| 
mm. mm. mm. | mm. mm, 
LEST ECCT SR WEP Er CS 7 See en, Emre oer eee ees eer 245 | 264 | 257 | — 242 
A IAMRICUIIGIRD Gals: 1h Solve <s. af Sie. oR ie BW Ow ed) hye REY Sous Mle inves | 262 | 274 | 272 — | 258 
re ar le haces na hn otter Nx be tags | 108 | 14 | 118 | — | 104 
IRIS Rg Sak Eras er So ENO aR DARN 7 ae Val Nea ai 
SPPEMURIIILEOE Drnals, sarees ae. Lk es ny esl ake 87 | 100 | 99 | 81] 83 
SePPOMAILTILUL THEI) a, SY Sovali. vee sete DNRC SIS YD (ddl aes OM 35 33 39 | 29 29 | 
| Breadth of nasals at the end of the nasopremaxillary suture... .-. +... > | P21 24 24; 20; 20 
Distance from orbit to tip of premaxillary. .. ... +. +--+ eee ee ees | 162 169 170 | 159 | 160 
Bength of apper miolar series 6S 5 tie ee we ele ee 81 78 so | 76 | 71 
The length of the horns of my two Impala bucks, which are to be regarded 
as good average specimens, measure about 73 and 66 cm. along the front curve and 
the distance from tip to tip is resp. 43 and 53 cm." 
The Impalas of German East Africa appear to be smaller with shorter and 
especially narrower nasals. The difference is not very great, but I think it is the 
best proceeding to name the Impala of the thornbush country north of Guaso Nyiri 
as a separate geographic race which is called rendilis after the nomadic tribe inha- 
biting this country. Concerning the colour it could almost have been expected that 
the inhabitants of this arid region should have been paler instead of being rather 
darker. 
1 The spread of the horns is, as is well known, very variahle, and sometimes one of the tips is nearer 
the median line than the other. A good example of this was an Impala which I saw in Nairobi and which probably 
was from Sotik. The spread of this was not less than 68 em., but the tip of the right horn was only about 
25 cm. from the median line. — Some ultramodern zoologists would probably term such a specimen a hybrid! 
