Material and methods
The author has been working in the mammal collection of the ZMA in various part-time qualities from September 1971 until its demise and is well acquainted with it. As a rule, type specimens in the collection were not kept separate from their conspecifics, but were clearly marked as types, not only in writing (register, card index, data base, specimen labels) but also with the aid of colour, labels and index cards being either marked in red or entirely red. However, this policy has not always been strictly followed. In some cases, specimens had been marked as types whereas they turned out to be no more than specimens from the type locality of the taxon involved. In one case, unregistered type specimens were discovered which had been marked as types since 1912, but not in red, and had gone unrecognized as types until 2009 (Cruz, in prep.). In another case, specimens which at some stage had been published as syntypes turned out to be no types at all. Thus, while the basis for this list was provided by the red marking of type specimens, it has been necessary to check the justification for marking and to go through the collection looking for hidden types.
Symbols and abbreviations used: # = field number; alc. = alcohol.