1889. ] DR. A. GUNTHER ON A NEW ANTELOPE. 73 
4, Description of a new Antelope from Southern Central 
Africa. By Dr. A. Gtnrner, F.R.S., Keeper of the 
Zoological Department, British Museum. 
[Received February 18, 1889.] 
A short time ago Mr. Morton Green, a resident and J.P. in Natal, 
brought to the Museum, beside several other interesting horns of 
Antelopes, a very singular head of a type of Antelope which evidently 
has hitherto escaped observation. Mr. Green stated that he had 
never seen the like of it during the thirty years he resided on the 
frontiers of Natal, nor could he ascertain from any hunter that he 
had seen the Antelope alive. He obtained this specimen many years 
ago through a hunter who went trading for him into the Zambezi 
region. This man told him that he had bartered it from a native 
chief who told him that the animal was extremely scarce. Mr. 
Green not being able to obtain any further information in the colony, 
has brought it now to England, with the object of seeing it deposited 
in a public Museum, where the information as to the mode of its 
acquisition would be preserved. 
The horns are evidently those of a very old animal; of the skull, 
unfortunately, only a portion of the frontal bones is preserved. The 
horns are gently curved backwards, showing the slightest indication 
of a twist near to the top; they measure thirty-one inches along the 
curve, and thirty in a straight line from the base to the tip. The 
distance of their ends is twenty-two inches. A transverse section 
taken three inches from their base would represent a triangle, the 
posterior side of which is slightly longer than the outer one; at this 
portion the horn is broader from side to side than from the front 
backwards. In about the middle of the length of the horn the 
transverse section becomes an isosceles triangle, passing into a 
circular shape in the last fourth of the length. 
The trihedral shape of the basal half of the horn is produced by 
a prominent, but obtuse ridge in front of the horn; this ridge is in 
the median line at the base of the horn, runs then a little inside of 
the median line for a short distance, and is finally directed towards 
the outside of the horn, disappearing altogether in the distal conical 
portion. The posterior side of the horn is remarkably flat and broad. 
The annulations are distinct only in the basal portion and very 
obscure further on, the distal half being smooth. The annuli are 
very low, separated from each other by shallow grooves, and provided 
with narrow concentric wrinkles on the posterior side of the horn. 
The cranial base of the horns is broad and flat, without enlarge- 
ment of the bone. The least distance between the bases of the 
horns is two and a half inches. The supraciliary foramina are 
situated opposite to the middle of each horn, distant from it about 
one inch. The distance between these foramina is three inches. 
Of the known genera of Antelopes none approach this singular 
type more nearly than Z’rugelaphus. Tragelaphus has, likewise, 
