CONTRIBUTION TOWARDS A MONOGRAPH OF THE

Numerous observations on Neotropical Oedemeridae have accumulated during the past several years, the publication of which is necessary before further cataloging and revisionary work are possible. These various studies have resulted in the following revised key to the genera occuring in the New World, and the notes on these genera will lead to a new catalog of the group. A considerable number of species have been generically reassigned, making necessary a new catalog of species which is being prepared and will be published separately. The present catalogs of the New World species, namely my revision of the Nearctic species (1951), and Blackwelder's checklist of the Neotropical species (1945) should be referred to for complete citations for the genera and species discussed below, unless otherwise indicated. Other bibliographic references are given in previous papers of this series and will not be repeated here. For quick reference, the following proposed changes in Blackwelder's checklist are listed below. These are discussed further in the text in each case, except for the genera which are removed from the family. CHANGES IN BLACKWELDER'S CHECKLIST.-An examination of specimens of Cycloderus Solier, 1851, including holotype and paratype specimens, confirms the placing of this genus in Salpingidae, probably near Polypria Chevrolet (see Seidlitz, 1917). It is not a member of the family Oedemeridae. Copidita LeConte does not occur in South America. The species placed in this genus in the Checklist, with one exception, are to be variously assigned in the genera: Oxacis, Oxycopis, Paroxacis, and Ananca. (See under Copidita below for a discussion of the exception.) Sessinia Pascoe does not occur in the New World. The species assigned here in the Checklist belong in Ananca and Oxycopis. Oxacis LeConte includes species that have been assigned below to Paroxacis, Oxycopis, and Alloxacis. Meloeditylus