154 EINAR LONNBERG, MAMMALS COLLECTED BY THE SWEDISH ZOOLOGICAL EXPEDITION ETC. 
forests around Nairobi, and even so far north as in the forests at Meru boma. In 
the forests of Kenia I saw heaps of its droppings a little everywhere and found the 
remains of its skull at a Wandorobbo fire-place at an altitude of about 2,700 m.? 
I have compared skins and skulls of the 6 specimens which my license per- 
mitted me to shoot with von DispEn’s type specimens, kept in this museum, and 
also with some specimens from Kilimanjaro. With regard to the colour there is a 
certain variation, some specimens being more reddish others more dark, chestnut 
brown. The darkest specimen in my collection is a female shot at Meru boma. It 
agrees in colour best with a male from Kilimanjaro. 
With regard to the skulls there is a considerable variation in the degree of 
development of the nasal process of the premaxillary. In von DipeEn’s type this 
process is short and pointed, and separated from the anterior end of the lacrymale 
by an interspace of about 7 mm. along which the maxillary and the nasal form a 
suture with each other. In all specimens of my collection the nasal process of the 
premaxillary is more strongly developed and extends rather broadly backwards so 
that it meets the upper anterior end of the lacrymale and fully separates the maxil- 
lary and the nasal from each other. I believed at first that this should be a racial 
characteristic, but when examining the Kilimanjaro specimens I found them to be 
intermediate. They have the interspace between the tip of the nasal process of the 
premaxillary and the anterior end of the lacrymale shorter than in the type, and 
the suture between the maxillary and the nasal accordingly much shortened. In 
one of the Kilimanjaro specimens this distance is almost completely reduced. In 
consequence of this intermediate stage all specimens are retained under the original 
name. 
The size, shape and situation of the premaxillo-maxillary vacuities are subjected 
to a great variation in my material. They are sometimes large sometimes small, in 
some specimens only the upper posterior end is left, and in one of the bucks it is 
practically obliterated as only a small opening entirely situated in the maxillary 
is left. 
The female type is an old specimen, and this is probably the reason why it is 
broader than my female skulls, because my best buck has a broader skull than the 
other male skulls. The differences with regard to these dimensions are therefore not 
of racial value. 
The »Suni»> was chiefly found in forests with a rich undergrowth of bushes 
and it was often very dark in its haunts. The first specimen was shot in a thicket, 
where my gunbearer had detected it, but it was so dark that I only could see the 
flickering movements of its light tail, and had to aim at that without knowing whether 
the body was to the right or left of the visible object. The Suni appears to know 
that it is well protected in this kind of thickets and does not move far when it has 
been disturbed. It has the same habit as some other antelopes to deliver its ex- 
crements in a certain place and, in spite of the small size of the animal, large heaps 
of its droppings are often found in the woods. 
‘ I saw also a specimen on the Mombasa island. 
