Three new species of the genus Heterochelus Burmeister, 1844 out of Kulzer's 11th group from the Northern Cape (Coleoptera: Scarabaeidae: Melolonthinae: Hopliini). 16th contribution to the knowledge of African Hopliini. Coleoptera, 5(2), Dezember 2001: 433-440. 435 [Zoological Record Volume 139]