240 U.S. NATIONAL MUSEUM BULLETIN 261 



with an apical membrane, veins distinct and often elevated, texture 

 of clavus and corium strongly coriaceous and occasionally punctate, 

 with only four apical cells, tlie base of the third slightly more distal 

 than base of fourth, claval veins parallel, without an anteapical plexus 

 of veins or anteapical supernumerary crossveins to costal margin. 

 Hindwing at rest extending almost as far posteriorly as forewing, vein 

 R2+3 incomplete except in type-species. Hindlegs at rest with knees not 

 attaining posterior proepimeral margins; setal formula 2:0:0, 2:1:0, 

 2:1:1, or 2:1:1:1; first tarsomere with length equal to or less than 

 (exception: M. exaltata (Melichar)) combined length of second and 

 third tarsomeres. 



Male genitalia: Pygofer in lateral aspect strongly produced and 

 usually rounded apically, with numerous dispersed microsetae and a 

 few interspersed macrosetae, usually without processes. Plates fused 

 basally, very short, not extending nearly as far posteriorly as pygofer 

 apex, their basal portions concealed by abdominal sternum VIII in 

 unmacerated specimens, with dispersed microsetae and occasionally 

 with a few interspersed macrosetae. Style variable in length compared 

 with apex of connective, with very distinct preapical lobe (exception : 

 M. hamleti (Distant)), rounded apically. Connective Y-shaped, T- 

 shaped, or in form of transverse bar, usually carinate medially. Aedeagus 

 variable interspecifically, and intraspecifically to a considerable degree 

 in some species. Paraphyses absent. 



Female abdominal sternum VII with a median projection on pos- 

 terior margin. 



This genus occurs in Ecuador, Peru, Brazil, and Paraguay. Specimens 

 labeled "Mexico" have also been found in collections, but as Schroder 

 has pointed out previously, these locality labels are probably in error. 

 Molomea is closely related to Oncometopia, from which it may be dis- 

 tinguished by its pygofer which is produced more posteriorly than is 

 common in Oncometopia and by its very short male plates which are 

 fused basally, in addition to the characters listed in the key. It is also 

 closely related to Tapajosa from which it may be distinguished by the 

 characters used in the key and by its larger size and more robust 

 appearance. 



In addition to the synonymy listed in the check list below, there is 

 some likelihood that M. vermiculata (Signoret) and M. consolida Schroder 

 should be synonymized. Specimens determined by Berg as M. vermiculata 

 are conspecific with M. consolida^ but it is doubtful that Berg had seen 

 a typical specimen of M. vermiculata. There are no specimens of M. 

 vermiculata in the Signoret collection in Vienna and no specimen was 

 sent to me from the Zoologisches Museum der Humboldt-Universitat 

 in East Berlin with the other Signoret types from that institution. The 



