224 Sai/s Descriptions of 



r 



Length about one fifth of an inch. 

 I agree with Leach in the propriety of separating this 

 group from Evania. In addition to the great dissimi- 



larity of the neuration of the wings, the proportional 



length of the posterior feet and of the antennae is quite 



different. 



PiMPLA, F. 



1. P. humida. Black; feet yellow; thorax with white 

 lines ; abdomen with white lateral spots. 



Inhabits Indiana. 



Bodij black, transversely rugulous : anterior orhits 

 and palpi white : thorax with rather large, transverse 

 wrinkles ; wing-scale, line before the wing, and two 

 abbreviated dorsal lines white; m/?^5 irnmaculate ; nerv- 

 ures blackish ; stigma at base whitish ; second cubital 

 cellule petiolated : sautel, posterior margin while : abdo- 

 men falcate ; segments, excepting the first, with a rather 

 large, rounded, whitish, lateral spot: oviduct at least as 

 long as the body: pectus and feet honey-yellow: tarsi 

 whitish, incisures dusky; tihitB whitish, posterior pairs 

 blackish at tip. 



Length over half an inch. 



Forai and magnitude of P. pterelas, Nob., which, 

 however, is destitute of white spots and lines. 



2. P.? petiolatus. Black; varied with yellowish- 

 white ; second cubital cellule minute, petiolated. 



Inhabits Indiana. 



Body black, densely punctured : hypostoma^ mouth, 

 and antenna beneath, whitish : thorax with a wide, 

 white line before the wings : wings hyaline ; nervures 

 blackish; stigma whitish towards the base; second 



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