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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 41. 



extending backward; hind tarsi rather dilated toward the apex; 

 hypopygidium broadly rounded at the apex; four anterior legs 

 brown; apex of posterior coxse, trochanters, femora except a black line 

 above ferruginous, the rest of the posterior legs black. Except where 

 mentioned the characters given for the female agree with the paale. 



Fig. 1.— Wings of Conocoxa chalicipoda Rohwer. 



Chubut, Patagonia. A male and a female collected by W. F. H. 

 Rosenberg. 



Type.— C^t. No. 13986, U.S.N.M. 



NITHULEA, new genus. 



Very like Conocoxa Rohwer and agrees with the description of 

 that genus except in the following points: Malar space broader; 

 antennae six-jointed, the third joint as long as the fourth and fifth 

 combined, sixth subclavate ; antennae inserted nearly the width of the 

 scape above the clypeus; caudad end of the scutellum rather sharply 

 triangular; posterior coxae elongate, but the femora normal, second 

 transverse cubitus wanting; the cubital venation reminding one of 

 Euura Newman. 



Genotype. — Nithulea nigrata Rohwer. 



NITHULEA NIGRATA, new species. 



Entirely black; wings dusky hyaline, venation brown, stigma 

 paller. 



Female. — Length 3.5 mm. Clypeus broadly rounded on the 

 anterior margin; antennal foveas not sharply defined, striato- granular; 



