INSECUTOR INSCITI^ MENSTRUUS 51 



from the lower angle, 5 from the middle of the cross-vein, 

 weak, 6 and 7 long-stalked, 8 very close to the cell to the mid- 

 dle. Frons with a large prominence with raised edges ; tongue 

 rudimentary ; palpi short, porrect, not reaching the frons ; tibiae 

 unarmed ; eyes naked ; vestiture of hair and hair-like scales. 



Oxythaphora delta, new species. 



Front yellow ; vertex brown above the prominence, yellow 

 and white behind ; collar yellow and white, thorax gray, abdo- 

 men dark yellow above and on last two segments below, base 

 of venter blue-gray; legs and venter of thorax gray. Fore 

 wing bluish white on costal half, slate-gray below median vein ; 

 a broad gray band across middle, edged with black on each side, 

 strongly contracted in the cell ; veins 8 to 11, black lined toward 

 apex and a streak on veins 7, 6, and 5, succeeding below ; veins 

 3 to 5 outwardly narrowly black. 



Hind wing blackish, marked with gray in the cell and at 

 base of anal margin. Expanse, 40 mm. 



Type, male, No. 21051, U. S. Nat. Mus. ; Natal, Brazil, Jan- 

 uary 23, 1917 (E. C. Green). 



Date of publication, April 6, 1917. 



