APPENDIX. 327 



sericeous with golden hair ; scale covering the base of the 

 wings yellow ; wings hyaline; nervures fuscous, at base 

 pale yellowish; feet bright yellow; basal half of the ante- 

 rior pairs of thighs black ; posterior thighs smaller than 

 the abdomen, black, with a yellow spot on the tip above, 

 dentated on the posterior edge; posterior tibia piceous on 

 its basal incisure; terminal spine robust, shorter than the 

 first tarsal joint; first joint of the posterior coxae with a ro- 

 bust tooth above near the tip ; abdomen subovate, polish- 

 ed; first segment nearly glabrous, second segment hairy on 

 each side, remaining segments hairy near their tips. 

 Length one-fifth of an inch. 



LEUCOSPIS, Fabr. 



L. affmis. Abdomen sessile ; oviduct as long as the ab- 

 domen ; black, varied with yellow ; collar each side and 

 behind margined with yellow, and with an abbreviated, 

 transverse, yellow line on the anterior submargin. 



Inhabits Pennsylvania. 



% Body densely punctured ; antennse, basal joint yel- 

 low; collar margined each side and behind with yellow, 

 the yellow abbreviated line on the anterior submargin is 

 about half the width of the collar ; thorax, incisure at the 

 base of the wing dull yellow; scutel with a transverse yel- 

 low line; wings brownish; jo/e?^ra, a yellow line over the 

 insertion of the posterior feet; feet yellowish, thighs 

 dusky or black at base; posterior thighs black, with a yel- 

 low spot at base and another at tip on the exterior side; 

 posterior coxae testaceous at tip ; tergum with three nearly 

 equal bands, and an oval, longitudinal spot near the tip, 

 yellow ; venter with a yellow spot each side, opposite to 

 the termination of the third band of the tergum. 



