1869.] | MR. SCLATER ON TWO SPECIES OF MAMMALS, 595 
British Museum, which had been brought to this country living 
by Mr. Whitfield, and had died in the Surrey Zoological Gardens. 
In one of the plates of the ‘Knowsley Menagerie’ (plate vii. 
fig. 1) an Antelope is figured under the same name, and is described 
in the letterpress by Dr. Gray in very nearly the same terms as 
in the original description in the ‘ Annals.’ This description is 
repeated, word for word, in Dr. Gray’s ‘‘ Synopsis of Antelopes ” 
published in the Society’s ‘ Proceedings’ for 1850 (p. 123). 
In 1852, Dr. Gray seems to have come to the conclusion that the 
animal figured in the ‘ Knowsley Menagerie’ was not the same as 
the true Cephalophus dorsalis originally described from Mr. Whit- 
field’s specimen, and, accordingly, in his list of Ungulata Furcipeda 
in the British Museum, named the former Cephalophus badius, re- 
taining the name Cephalophus dorsalis for the latter. Dr. Gray, 
however, does not state exactly how the two species are to be dis- 
tinguished, and, after examining the two typical specimens in the 
British Museum, I am unable to regard them as more than slight 
varieties of the same animal. The typical specimen of C. dreviceps 
is likewise now in the National Collection, and appears to me quite 
undistinguishable from either of the two above mentioned, though 
most nearly resembling that called by Dr. Gray C. dadius. 
The only other original author who appears to have mentioned 
this Antelope is Temminck, who, in his ‘ Esquisses Zoologiques sur 
la Cote de Guiné’ (Leiden, 1853), tells us that Cephalophus dor- 
salis inhabits the forests of Ashantee and Sierra Leone, but is rare 
in the forests of the sea-coast. 
We have had three examples of this Antelope living in the 
Society’s Menagerie. 
The first of these (@) was purchased of a dealer in Liverpool on 
the 27th of August, 1861, and lived more than two years in the 
Gardens, having died on the 6th of November, 1863. 
The second specimen (4) is that already mentioned, which was 
received, when quite immature, on the 13th of February, 1866, and 
described by Dr. Gray as Cephalophus breviceps. This animal was 
a female, and was kept in the same division of the Gazelle-sheds 
with a male of the allied species, Cephalophus rufilatus, with 
which it bred when adult. It produced a young one on the 25th of 
January last, and died on the following day. 
A third specimen (¢) of the same Antelope was brought from the 
Gold Coast, and presented to the Society by Mr. C. B. Mosse, Staff- 
Surgeon, R.N., on the 16th of October last, but unfortunately died 
three days afterwards. Mr. Smit’s drawing of the present species 
(Plate XLVI.) is taken from this last-named individual, which, 
however, as already stated, agrees closely with what Cephalophus 
breviceps became when adult. 
Dr. Murie has kindly communicated to me the following notes 
taken on a comparison of our specimen & of Cephalophus dorsalis 
and an example of a female of Cephalophus maxwellii which died 
about the same period. 
“As the table shows, there is little difference as to the dimen- 
Proc. Zoou. Soc.—1869, No. XXXIX. 
