132 
at Paris. He described them as larger and more curved above than 
those of the Kod, eighteen inches long and five inches in circumfer- 
ence at the base, and he refers them to an animal which Adanson 
says is called Koba in Senegal, and the Great Brown Cow by the 
French colonists. Pallas refers these horns to 4. Pygargus, and the 
figures and description agree in many particulars with the horns of 
that species ; but they are rather longer, and have more rings. Pen- 
nant (Syn. Mam. 38) has given the name of Senegal Antelope to 
Buffon’s short account and figure, but has added to it the description 
and the figure of the head of a skin which came from Amsterdam, 
and appears to be 4. Caama of South Africa. Cuvier (Dict. Sci. 
Nat. il. 235) has translated Pennant’s name to 4. Senegalensis. 
Erxleben (Syn. 293) and Zimmerman (Zool. 345) have translated 
Pennant’s description of his skin of 4. Caama, and called it 4. Koba, 
referring to Buffon’s description and Daubenton’s figure. Fischer, 
Hamilton Smith and M. Sundevall regard the Koba of Buffon the 
same as the Korrigum of Denham and Clapperton, but the horns of 
that species are considerably longer and much thicker at the base than 
those described by Daubenton, and the annulations of the horns are 
higher and more regular: but it may be remarked that Buffon 
describes his horns as having eleven or twelve rings, but figures them 
as having seventeen or eighteen. Mr. Ogilby (Penny Cyclopedia 
and the Proceedings of the Zoological Society) considers Buffon’s 
Koba to be the Sing-Sing ; and in the length of the horns, and in the 
number, disposition and form of the rings, his figure more nearly 
agrees with the horns of that species than of that of the 4. Pygarga, 
to which Pallas first referred it; but the horns are represented much 
more lyrated than any horns of the Sing-Sing I have seen ; indeed, 
not one of the specimens which have come under my observation have 
had any inclination to assume that form: but as this is the only 
Western-African species which in any way agrees with Buffon’s figure, 
perhaps it is best to adopt Mr. Ogilby’s suggestion. The name of 
Koba or Kob appears to be common to many species. Schinz errone- 
ously considers Damalis Senegalensis, Antilope adenota and A. for- 
Jew (H. Smith) as synonyms of this species. 
c. Nape with a linear, central, compressed, recurved mane. 
20. Arcocerus, H. Smith; ZLgocerus, Desm. ; 
Hippotragus, Sundev. 
Horns conical, elongate, rather compressed, ringed, recurved ; back 
of the neck with a linear reversed mane ; tear-gland covered with a 
tuft of hair; teats two. 
1. Arcocrerus Eauinus. The Eraax or Equine ANTELOPE. 
Spot above the eyes and pencil before the eyes fulvous grey ; nose 
whitish ; face black; nuchal mane distinct. 
Aigoceros Equina, H. Smith; Harris, W. A. A. t. 21.—da. glauca, 
Forster.— 4. Osanne, Geoff.—A. barbata, H. Smith.—<A. Truteri, 
Fischer.—4. aurita, Burch. MSS.—Capra Aithiopica, Schinz.— 
