North American Hymenojptera. ' ■ 217 



ttnncE 



ate, with a lateral whitish spot: iJiorax with the posterior 

 margin of the collar white ; jpZeMra w ith a white spot on 

 the anterior upper part : wings tinted with fuliginous ; 



nervures 



ind extending to the lateral sutures, white : feet 

 white, a little varied with yellowish at tips of the joints : 

 thighs black at base beneath. 



$ Anal segment white : posterior coxse at base black : 

 posterior thighs in the middle and their tibi« at tip black* 



Length seven twentieths of an Inch. 



Resembles the epinotus, but may be at once distin- , 



guished by the white spot of the pleura. 



6- A. pannosus. Black ; mouth white ; feet varied 



with white* 



Inhabits Indiana. 

 (J Body black : nasus very deeply emarginate, white : 



labrum suborbicular, truncate-subema 

 ish on the disk, or within the emargination of the nasus : 

 mandibles black at tip: maxillary palpi dusky in the 

 middle of the basal joint : thorax^ posterior edge of 

 the collar white ; wing-scale blackish : whigs hyaline ; 



nervures 



feet 



tarsi 



with dusky incisures; posterior pair black, incisures of 



and 



joints of the tarsi white ; coxffi wlute, wiin a oiacK spoi 



above and beneath. 



Length one fourth of an Inch. 

 5 Cox« w;ith a large black spot ; posterior tibiae with 



a white longitudinal line- 

 Length three tenths of an inch. 



vol.- I. ^PART III- 29 



