SUPPLEMENT. 337 



hind coxae at least on a part of it, blackish. Feet yellow ; the 

 hind tibiae of the female are indistinctly infuscated at the tip ; those 

 of the male are distinctly infuscated or even blackened, especially 

 upon their inner side. The hind tarsi are entirely black. Wings 

 tinged with blackish-gray. 



Hob. New York (Osten-Sacken) ; Illinois (Le Baron). 



29. G. exiglllis, nov. sp. . .ZEneus, nitens, antennis nigris, faci6 

 ochracea, coxis anticis totis, pedibus lamellisque hypopygii flavis. 



Bronze-colored, shining ; antennae black ; face ochre-yellow ; the whole 



fore coxae, the feet, and the lamellae of the hypopygium yellow. 

 Long. corp. 0.12. Long. al. 0.12. 



More bronze-colored than metallic green, shining. Front 

 covered with a gray-whitish dust. Antennae altogether black, 

 the narrow face brownish ochre-yellow. The crescent-shaped 

 lamellaa of the hypopygium yellowish. Fore coxaa entirely yel- 

 low ; also the four posterior COXSB mostly yellow, but the whole 

 outside of the middle coxa? and a considerable portion of the out- 

 side of the hind coxa? blackish. Feet yellow ; the tarsi, with the 

 exception of the basis, strongly iufuscated. Wings gray. 



Hab. Illinois. (Le Baron.) 



Gen. V. PELASTO]VEIIRUS. 



Corrected Table for determining the Species. 



-. ( Cilia of the inferior orbit black. 2 



I Cilia of the inferior orbit whitish. 6 



!A bright white, glittering spot on the posterior margin of the thorax. 

 1 longicauda Lour. 

 No such white spot on the posterior margin of the thorax. 3 



f Wings blackened. 2 lugubris Loe w. 

 I Wings tinged with blackish-gray. 4 



!Fore COX33 altogether yellow ; lamellae of the hypopygium long. 

 3 laetus Loew. 

 Fore coxae not altogether yellow ; lamellae of the hypopygiuiu short. :") 



,. ( Only the basis of the fore coxae blackened. C lamellatus Lone. 



(. The whole fore coxae blackened. 7 abbreviatus LUKW. 



/ Fore coxae blackened at the basis. 4 vagans Loew. 



i Fore coxae entirely yellow. 7 



f Dorsum of the thorax of a iiuiform color. 5 cognatus Loeio. 



1 \ Dorsum of the thorax copper-colored, with blue-green stripes. 



8 alternans Loew. 



22 



