The parasites described in this paper were taken from twelve specimens of the Natal horseshoe bat (Rhinolophus geoffroyi zuluensis) found in a cave near Wartburg, Natal, in May 1937. Thirteen specimens of the parasite were taken from the vibrissae situated on or near the nose-leaf of the host, each of them being attached near the base of one of these tactile hairs. No single vibrissa was found to have more than one parasite attached to it. The largest number of mites taken from any one host animal was four, the smallest was one, and none were found on any part of the body other than the facial region. With the aid of a hand lens the parasites can easily be seen clinging to the nasal vibrissae, where they appear as minute white specks. So far as I am aware mites of the family Listrophoridae have not previously been described or recorded from South Africa.