The hydrophilid and spercheid beetles of Namibia in consideration of the material of the Namibia Expedition of the Museum of Natural History Berlin in 1992, supplement by results of former Namibia and Kalahari Expeditions (Coleoptera, Hydrophiloidea: Hydrophilidae et Spercheidae). Mitteilungen aus dem Zoologischen Museum in Berlin, 71(2) 1995: 251-275. 257 [Zoological Record Volume 134]