190 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



25. Face and thorax with golden pubescence; clypeus and a triangular spot on 



lower anterior orbits yellowish; hind border of pronotum also yellowish. 



Brazil princeps (Banks) 



Face and thorax without golden pubescence; no yellowish color on hind border 

 or pronotum; clypeus not yellow 26 



26. All femora black and most of rest of legs 27 



Some of femora at least rufous 28 



27. Femora and rest of legs black; wings black; head and thorax faintly bluish. 



Peru peruanus (Banks) 



The front legs beyond femora rufous to yellowish; the midtibiae rufous, tarsi 

 and posterior legs wholly dull black; insect black; lower face and lower parts 

 of pronotum with silvery pubescence; a silvery spot each side behind prono- 

 tum and four silvery spots on propodeum; the two spots at hind border the 

 larger; antennae dull yellowish. British Guiana . . . incrotus (Banks) 



28. Only the hind femora rufous; patches of white pubescence each side at end of 



propodeum; clypeus and lower face with long white hair. Brazil, Trinidad, 



British Guiana comparatus (Smith) 



Other femora also rufous 29 



29. Antennae pale yellowish, at least on basal part; all femora and tibiae yellowish, 



trochanters black. Colombia lorenzanus (Banks) 



Antennae nearly black 30 



30. Middle and hind tibiae black; body with fine white pubescence, clypeus nearly 



triangular 33 



Middle and hind tibiae yellowish or rufous 31 



31. Trochanters yellowish; clypeus and lower face with white appressed pubes- 



cence militaris (Lynch-Arribdlzaga) 



Trochanters black 32 



32. Basal joint of antennae black below as above; propodeum fully as broad at 



base as long; abdomen broad in middle; antennae deep black; tegulae dark. 



Brazil rufipes (Banks) 



Basal joint of antennae pale yellowish below; face with white pubescence below 

 and on clypeus; antennae brown to yellowish 34 



33. Front femora yellowish as others; wings somewhat yellowish. Colombia. 



Ageniella magdalenus (Banks) 

 Front femora black, others rufous; wings hyaline. British Guiana. 



smithi (Dalla Torre) 



34. Tegulae pale yellowish; propodeum strongly convex, high at base, near turn it 



is striate or slightly ridged transversely. Colombia, Ecuador. 



associatus (Banks) 

 Tegulae dark; propodeum low, only slightly convex, not striate. Brazil. 



amalotis (Banks) 



MALES 



1. Face and clypeus wholly dark or the extreme apical margin of clypeus 



paler 2 



Face or clypeus on sides with a white or yellowish spot or streak, not simply 

 pubescence 5 



2. Body plainly bluish and very hairy; all femora and tibiae yellowish, or only 



the femora and foretibiae yellowish 3 



Body black, much less hairy 4 



3. All femora and foretibiae yellowish, midtibiae pale, posterior tibiae yellowish 



brown; foretarsi yellowish except last joint, midtarsi yellowish brown. 



