By far the most species-rich individual beetle collection at MNHW, gathered in several decades preceding WWII. It consists of two separate units, the general collection (RSG) covering all beetle families from the (mostly Western) Palaearctic (93 original drawers), and the worldwide collection of water beetles from the suborder Adephaga (Hydradephaga, RSH), which was a favourite group in R. Scholz’s taxonomical studies and publications (20 new drawers). The collection comprises in all about 62500 pinned specimens (RSG: 56700, RSH: 5800) of about 9400 species and subspecies (RSG: 8900, RSH: 500 - in part duplicated in RSG). It is currently databased for GBIF in over 85 % (RSG: 32613 records, >87%; RSH: 2881 records, 70%).