150 PROCEEDINGS OF THE NATIONAL MUSEUM vol. U4 



color at base; base of posterior tarsi reddish. Trinidad, Barro Colorado 

 Island. Figs. 12, 13 36. abnormalis, new species 



4. Whole abdomen reddish; pronotum reddish; front part of forewings from 



costal margin to back of cubital cells much darker than the rear half of 

 forewings or the rear wings; sides of thorax reddish on sides just above 



coxae. Trinidad. Figs. 14,15 2. semialatus, new species 



Whole abdomen not rufous; pronotum not reddish; forewings unicolorus. 



5. Basal three segments of abdomen reddish, the rest pubescent; narrowly edged 



with yellow at apex, the apical segment more or less testaceous; antennae 

 covered with a microscopic pile, the apical joints brownish beneath; palpi, 

 scape, antennae below, front of coxae and trochanters, yellowish; legs 

 basally yellowish; wings hyaline; second cubital cell shorter than third 

 above and below; first recurrent vein received before middle, the second on 

 basal third; spur of posterior tibiae three-fourths as long as its metatarsal 



joint; length 5 mm. Mexico relativus (Cameron) 



Basal three segments of abdomen yellowish, but the third has a black stripe 

 across posterior part; the other segments not edged with yellow; the pro- 

 notum not entirely yellowish; a white band across posterior edge of pro- 

 notum, the anterior front corners of pronotum with a white band which 

 continues backward to posterior edge on lower side; the forecoxae white; 

 all rest of legs yellow; the body color black without any greenish color; 

 clypeus, face, and inner orbits to antennae whitish; antennae black above, 

 yellowish beneath; pubescence of body white; volsellae of genitalia with only 

 a very few long hairs on apical third on inside; subgenital plate with the 

 basal triangle closed much apicad of middle. Panama. Figs. 22, 23. 



35. setnirufus, new species 



6. Clypeus with its apical edge much thickened and with a large rounded notch 



on each side of middle; head and thorax with a faint dark greenish iri- 

 descence, or black 7 



Clypeus without its apical edge thickened (thin) and without a large rounded 

 notch each side; if somewhat thickened without the notch 11 



7. Lateral 0.35 and apical margin of clypeus whitish; apices of coxae and tro- 



chanters fulvous; basal triangle on subgenital plate closed at middle of sub- 

 genital plate. Mexico. Figs. 68, 69 mexicanus (Cresson) 



Clypeus all black or all white, or if lateral 0.35 white the apical margin of 

 clj'peus black and coxae all black, trochanters all fulvous 8 



8. Clypeus with lateral 0.35 white but apical margin of clypeus black; apical 



center of clypeus projecting and with a large notch each side; coxae all 

 black, trochanters all red. Honduras. Figs. 1, 2. 



54. hondurensis, new species 

 Clypeus black or all white 9 



9. Clypeus and face all white, anterior orbits white to antennae and narrowing 



to a pointed triangle about half way to anterior ocellus; last two pairs 

 coxae and trochanters black, the anterior pair of both rufous; front pair 

 femora yellowish; foretibiae and basitarsi yellowish, last two pairs tibiae 

 and tarsi dark ; front and vertex greenish, thorax a brighter green, abdomen 

 black, antennae brown above yellowish beneath on first eight joints. Guata- 



mala. Figs. 16, 17 52. bequaerti, new species 



Clypeus all black; coxae and trochanters black except trochanters may be 

 yellowish; basal triangle on subgenital plate closed about apical fourth or 

 if at about the middle the plate is more nearly flat not so strongly roof- 

 shaped; front and vertex black but with a trace of greenish color; inner 

 orbits slightly whitish. 



