KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 48, N:0 5, 111 
Hares were seen many times in the neighbourhood of Nairobi, at Juja farm, 
Blue Post, Kutu ete. but, as observed above, when specimens were not shot it is 
difficult to say to which species a running Hare belonged, although the difference in 
colour is considerable. 
In addition to the difference of the pelage between these two Hares, the cha- 
racteristics of the upper incisors pointed out by pr WrnvoN are very useful for 
distinguishing the two species. The combined breadth of the incisors at the cutting 
edge of L. crawshayi is only 5 mm. but in L. victoriw the same dimension is fully 
6 mm. In the former the grooves are quite filled up with cement so that the sur- 
face of the teeth looks flat. The cheek-teeth of L. crawshayi as well are smaller 
the length of the whole series measured at the worn surface of the crowns being 
about 12,2 mm. whereas the same dimension in L. victorie is 13,2—13,3 mm. 
Lepus somalensis Hruatin. 
Hevetin: Noy. Act. Acad. Leop. Car. Nat. Cur. 1861, Bd 82, p. 5. 
The first locality where I made aquaintance with the long-eared Somali-Hare 
was in some dry thornbush-patches on the acacia steppe around Lekiundu river. 
When the expedition had crossed Guaso Nyiri to its northern side this Hare was 
found to be common in the thornbush which occupied the whole country there. 
They usually sat under acacia bushes and could often be seen at some distance, 
especially if they had raised their long ears. They were not shy, but did not sit so 
close as for instance L. victorie and L. crawshayi. On the other hand they did not 
develop such a speed as the two latter species. Sometimes a Lepus somalensis only 
comparatively slowly went away a little bit, if not too much scared. 
The sexes appear to be of similar size. Out of my series of ten specimens the 
upper length of the skull, from occiput to tip of nasals, is 87 mm. in one male, 86,5 
mm. in two females but 86 mm. in two other old males and an old female. The 
others are somewhat younger and therefore smaller, but the variation in size of adult 
specimens does not appear to be great. 
Other measurements of a male and a female skull are as follows: 
/ of 2 
| mm. mm 
RADUGIOUICISISE LEMIDON 6 ce sue i alu Bole eee ee ae ola 77 77 
PAVIXUENS ORORAGLE acre ek ota iy Oe ee PaM eh oneal fe 4 39 39,8 
Oblique length Gruasalg.:°s ASP eee eta ete os 35,5 37,5 
Breadth of braincase. .......:4.. Mw ware! 2b 29 28,7 
Pireateria Was «faite: fe Uy hee ds Ede LEENA a 1s . 23,5 24,5 
Length of palate to inside of incisors. .......-...- 31 33,5 
> a Nalatal fORMIMIRE “Sake et eal wilh ns € ck teh 9) 8 21,3 23,3 
> wmolar: Gacies PGSMM ge acr sees fa Us, auld uy 3 cs 15 15 
XA 
Combined breadth of incisors at cutting edge... .. - 
