258 CHARLES A. BLAKP:. 



Abdomen slender ; head scarcely wider than thorax ; legs pale, tips 



of femora blackish inelicausa. 



Abdomen slender; wings with an apical fuscous cloud iiiellipes. 



First segment of abdomen elongate pyriform ; wings with a distinct 



fuscous cloud before the apex BelTragei. 



Head narrowed behind the eyes, vertex rugose. .triangularis. 

 Wings with a faint fuscous cloud apically, stigma lying almost entirely 



within the marginal cell attenuata. 



Wings fuscous, first abdominal segment subpyriform ferrugiiiea. 



Wings with a distinct fuscous cloud beyond the marginal cell ; abdomen 

 slender, petiole and second abdominal segment coarsely punc- 

 tured inelaiiieeps. 



Moderately robust, dark honey yellow ; wings hyaline, marginal cell ovate 



lanceolate, pointed to tip, stigma fuscous concolor. 



Wings with three submarginal cells. 

 Head, thorax and first abdominal segment black, with pale pubescence ; 

 mesothorax and abdomen ferruginous, with golden i)ubescence, 



anterior wing broadly fuliginous at apex iiiiperialis. 



Head rounded, as wide as the thorax, both with ferruginous pubescence, 

 third submarginal cell narrowed beneath, its outer nervure 



nearly obsolete coiifracta. 



Second submarginal cell receiving both recurrent nervures, the third small 



and quadrate nubecula. 



Wings extending beyond the apex of abdomen, hyaline, stigma very 



large ampla. 



Wings yellowish hyaline, second submarginal cell very small, triangular, 



stigma large nifirta. 



Large ; body pale castaneous ; head entirely black ; posterior femora 



blackish alcauor. 



Black, shining; wings hyaline, stigma black atrata. 



Wings faintly clouded apically, stigma fuscous, third submarginal cell 



small and quadrate albipes. 



Wings hyaline, second submarginal small, triangular, stigma large, fus- 

 cous ; body shining sobrinus. 



Large; body smooth and shining; wings yellowish hyaline, stigma 

 fuscous, first submarginal cell as large as the second and third 



combined lepitlus. 



Abdomen with the first and second abdominal segments more or less sessile. 

 Wings with two submarginal cells. 



Abdomen robust, head broader than thorax, femora blackish tapajos. 



Robust ; abdomen with long, pale pubescence : wings hyaline, immaculate, 



nervures honey yellow veuustus. 



Wings hyaline, stigma and nervures pale honey yellow juxta. 



Head subquadrate, posterior angles rounded ; wings yellowish hyaline, 



stigma fuscous, small aulus. 



Head round, as wide as the thorax ; thorax black, clothed on disc with 

 coarse fulvous pubescence ; wings yellowish hyaline, clouded 



about the middle and apex rustiea. 



Head and thorax dark honey yellow, the former subquadrate ; wings 

 yellowish hyaline, marginal cell ovate bicolor. 



