A New Neotropical Chrysops(Diptera, Tabanidae)

The writer has realized for some time that the Chrysops uruguayensis discussed by KrSber (1926) was not the species described by Lutz under that name. However, he did nt wish to add to the already overburdened synonomy of Neotropical Chrysops and as long as the identity of two of Brethes’ species was unknown, there was danger of this. Di. Walter H. Hack of the Instituto de. Medicina Regional, Resistencia, Argentina, has kindly furnished the writer wi.th descriptions of the Brethes species and both of them seem to be distinct from the species described below.