Preliminary report on the intermandibular cutaneous glandular area and the infraorbital gland of the steenbok.

An intermandibular glandular area, never before described in any other ungulate has been found in the steenbok (Raphicerus campestris). It consists of enlarged sebaceous and apocrine sweat glands situated in the upper two-thirds of the dermis. They produce a dirty white almost flaky odoriferous substance which clings to the hairs of the area and is easily rubbed off for marking territorial areas as well as for marking females during mating. The infraorbital gland produces a black secretion which is the combined secretion of melanaceous, branched alveolar, sebaceous and enlarged apocrine sweat glands. The function of this secretion is not known as it is not used for any obvious marking purposes.