4850 THE ZooLocist—M arcu, 1876. 
bicornis major, excepting in the formation of the head, which is somewhat 
shorter and broader, with a less prehensile lip. ~ Its chief characteristic is 
the posterior horn, which is flattened at the sides, being of almost equal 
length to the anterior, and even being occasionally the longest, 20 in. and 
22 in. being above the average. They exist sparsely in all the country south 
of the Zambezi, being very rare, and not gregarious, though a bull and cow 
are generally seen together. 
‘“‘4. R. bicornis minor, the smallest of all, being seldom over 10 ft. in 
length, or more than 4 ft. 7 in. in height. The head is the most elongated, 
and the nose the most prehensile, of all the species, while the legs are shorter 
in proportion, and the foot smaller. The anterior horns rarely exceed 12 in., 
and the posterior 7 in. or 8in. They are only, within Mr. Drummond’s 
personal knowledge, found between Zululand and the Limpopo river, though 
he mentions one instauce of two having been killed further north, not far 
from the Zambezi. They are not gregarious, two full-grown ones, and a 
calf being the most ever seen together, and they live solely on thorns, 
leaves and shoots, being rarely, if ever, found out of thorn jungle. 
5. J. Oswellii, which in no way differs from R. simus, except in the fact 
of the front horn pointing forward, or in some cases even downwards, and 
which Mr. Drummond does not consider to be a distinct species, but merely 
an accidental and local variety. 
“Whether Mr. Drummond's views will prove to be correct or to require 
modification, the value of his testimony on the subject must be admitted. 
It is impossible for scientific naturalists at home to determine the question 
of species by a mere examination of horns in a museum, ignoring, or at 
least undervaluing, the observations of those who have seen and studied 
the wild animals in their native haunts. A solution of the difficulty can 
only be arrived at by a careful consideration’ of the anatomical differences 
revealed by diagnoses of the skulls of each of the so-called species (and 
several specimens of each), and the variations of haunt, habit, food, and 
other peculiarities, as detailed from actual observation of the wild animals. 
The real desideratum at the present time is a collection, or series, of 
skulls, accompanied in each case with particulars of the animal to which it 
belonged, when and where killed, colour, and external measurements of 
the whole animal, and estimated age in the opinion of the captors. Any 
sportsman or traveller who may have the means, or the opportunity, for 
bringing such a series to London for the use of the Zoological Society—and 
we believe Mr. Drummond has already expressed an intention of so 
doing—will by this means render a most important service to zoological 
science.” } 
A communication was read from Mr. E. Pierson Ramsay, containing a 
continuation of his remarks on the birds met with in North-Eastern 
Queensland, chiefly at Rockingham Bay. 
