Dr. Günther was the first to interest himself in this subject, and contributed a paper on it to the Zoological Society’s ‘Proceedings’ in 1890. Taking the skull of an adult male Reedbuck, obtained by Mr. H. C. V. Hunter in British East Africa, he pointed out the differences between it and the South-African Reedbuck called C. redunca by Gray, which is in fact C. fulvorufula of the present work. By the kind permission of the Zoological Society of London we are enabled to reproduce the woodcuts of the portions of the skull of these two Antelopes upon which Dr. Günther based his conclusions, and we add thereto Dr. Günther’s descriptions of these differences.
“Cervicapra fulvorufula[12] (fig. 38, p. 168) is distinguished by its very large orbit; in a skull 230 millim. long the vertical dimension of the orbit is 45 millim.; the eyeball is supported below by a largely expanded concavity of the jugal bone, the lower edge of the orbit being particularly sharp and thin, merging into the suture between the jugal and lacrymal bones. The cheek part of the skull is flat, rather concave, so that the facial portion of the cranium between the orbit and the antorbital foramen appears rather compressed when viewed from above. The ascending ramus of the intermaxillary reaches to, or nearly to, the nasal bone. The horns are but slightly divergent and very little bent forwards.
“In Cervicapra bohor (fig. 39, p. 169) the orbit is comparatively smaller; in a skull 245 millim. long the vertical diameter of the orbit is only 40 millim.; the jugal bone is much less expanded to form the bottom of the orbital cavity; the lower rim of the orbit has two edges, the lower of which does not merge into the jugo-lacrymal suture, but runs parallel to it at a distance of about 8 millim. The cheek part of the skull is swollen and convex, so that the facial portion of the cranium above the molar teeth cannot be termed compressed. The ascending ramus of the intermaxillary is short, terminating at a considerable distance from the nasal bone.”
Fig. 38.
Skull of Cervicapra fulvorufula.—j, jugal; l, lacrymal.
(P. Z. S. 1890, p. 604.)
Dr. Günther adds that the horns of C. bohor are much stronger and larger than in Cervicapra fulvorufula; their basal portion is somewhat flattened from the front backwards, but similarly corrugated; they diverge very slightly and have their points strongly curved forwards. He also says that the skull of a female Antelope brought home by Capt. Speke and given to the Museum in 1863 evidently belongs to C. bohor[13]; it has the basal portion of the nasal bones raised into a slight convexity, whilst this part is flat in the male. A similar sexual difference exists in the skulls of Cervicapra arundinum.
Fig. 39.