154 INSECTA SAUNDERSIANA. 



Genus ATOMOSIA, Macquart. 



Atomosia nigro.enea, Fein. 



y^nea, jninctata, antennis pedihusque nigris, alls cinereis. 



Body brassy : liead adorned with a dark tawny covering, having a 

 hoary stripe behind the eyes, beset with a few black hairs and bristles : 

 eyes black ; fore part flat, its facets very large : sucker black, tawny at the 

 tip : palpi black, clothed with black hairs : feelers black ; third and follow- 

 ing joints nearly twice the length of the first and of the second : chest and 

 abdomen thickly punctured, clothed with very short, shining, yellow hairs : 

 chest beset with a few black bristles : abdomen linear, a little narrower 

 than the chest and less than twice its length : legs black, clothed with 

 black hairs and bristles ; a few while hairs beneath the thighs ; shanks 

 adorned beneath with a fringe of white hairs ; feet covered beneath with 

 tawny down ; foot-cushions pitchy : wings gray ; wing-ribs and veins 

 black ; poisers yellow. Length of the body 3 lines ; of the wings 5 lines. 



Columbia. 



CORMANSIS, u. g. 



Atomosiie similis : alarum venae transverscc disjunctas. 



Like Atomosia, but the two cross-veins which bound the discoidal 

 and fourth posterior areolets are not in the same line. 



CoRMANsis Halictides, Fcm. 



Niger, capite fidvo, antennis nigris, pedibus fulvis, alis cinereis. 



Body black ; head tawny and thickly covered with short tawny hairs 

 above, hoary and clothed with whitish hairs beneath : eyes reddish ; fore 

 part nearly flat, all the facets very small : sucker and feelers black : chest 

 thickly clothed with short tawny hairs : abdomen slightly spindle-shaped, 

 a little broader than the chest and nearly twice its length, clothed with 

 pale tawny hairs, which are most prevalent along each side : legs tawny, 

 thinly clothed with yellow hairs, beset with a few black bristles ; thighs 

 black with tawny tips ; feet dark tawny ; claws black, tawny at the base ; 

 foot-cushions pale tawny : wings gray ; wing-ribs and poisers tawny : veins 



