BY R. J. TILLYARD. 59 



wing-border. Tn hind wing, there is no distinct Cu._,: Cu, is 

 straight, not arched concavely to posterior border. Five cross- 

 veins before origin of Fls in forewing. Hindwing narrower, and 

 slightly longer than forewing, very pointed. 



Legs short; tarsus with first joint moderately long, 2nd-4tli 

 verv short, fifth long; spurs present, nearly as long as first two 

 joints of tarsus. 



Abdomen short. 



Genotype, Brachyleon darwini (Banks). 



This genus may be placed next to Gymnocnemia on account of 

 the position of the origin of Rs in forewing, but differs strongly 

 from it in possessing spurs, and in lacking the Banksian line. It 

 differs from Macronemurus Costa, in its short abdomen, and 

 short legs, with long, stiff hairs. 



11. Bkachyleon darwini Banks. (PI. iv., fig.lO). 



Macronemurus darwini Banks, Pi-oc. Acad. Nat. Sci. Phila- 

 delphia, 1914, p.619 (issued 1915). 



Head dark brown above; two, pale spots on occiput near 

 eyes, which are very dark brown; antennce fulvous at base [the 

 rest missing]; face brownish, shading to fulvous on labrum : 

 mouth-parts fulvous. 



Thorax: prothorax pale brown, with two, broad, longi- 

 tudinal stripes of darker brown. Pterothorax and leys shiny 



brown. 



Abdomen short, slender, rich brown without any markings. 



Wings venation brown; in forewings, Sc, Rs, M, and Cu 

 speckled. Costal cross-veins very numerous, especially in fore- 

 wing. Pterostigmain forewing clouded with brown, in hind wing 

 clear. Apical cross- veins in all wings marked with brown specks. 

 In all wings, an irregular, brown streak runs obliquely up from 

 near the end of Mj to near apex; this streak is longer and more 

 diffuse in hindwing than in forewing. In hindwing, Cu, i.sdark, 

 M pale. Only five branches of Rs before radial brace. 



f{ab. — Darwin, N.T One specimen, taken on x\pril 6tli, 1913, 

 by Mr. G. F. Hill, Government Entomologist. 



Type in Coll. Banks, 



