Richard Lydekker

“ The horns, usually present in both sexes, are small and straight, situated far back on the forehead; and between them rises the crest-like tuft of hair from which the genus takes its scientific name. The common or true duiker (C. grimmi) is found in bush-country from the Cape to the Zambezi and Nyasaland, and ranges northward on the west coast to Angola. The banded duiker (C. doriae) from West Africa is golden brown with black transverse bands on the back and loins. C. sylvicultor, of West Africa, is the largest species, and approaches a donkey in size. ”