Fossorial llymenoptcra of North America. 427 



fuscous yellow, dark towards tip above ; two anterior pair of tarsi pale 

 yellow; hind pair dark brown throughout. Abdomen broad and stout, 

 black, polished like the thorax, a broad yellow band on each ring, on 

 the basal ring the band is slightly excavated in front; 2d band broad ; 

 terminal three narrower bands very distinct from the black abdomen ; 

 tip dark, with a light pubescence; banded beneath. 



Length, .38 inch. 



Illinois, (Coll. Ent. Soc. Phil.). 



Easily known by its black unusually polished and smooth body, its 

 yellow orbits which are broader than usual, the clypeus almost imper- 

 ceptibly excavated on the front edge, the absence of any yellow spots 

 on the propodeum and the singularly sculptured enclosure. 



Gorytes rugosus, n. sp. 



% . Body uniformly deep black ; head with the front broader be- 

 tween the eyes than usual, surface unusually coarsely punctured, not 

 much polished, dull colored ; orbits yellow, but the supra-clypeal region 

 is black; clypeus broader than usual, yellow, mandibles black; labial 

 palpi brown ; three terminal joints of maxillary palpi yellowish ; an- 

 tennas long filiform, scape yellow beneath, the remainder black, sutures 

 of joints of flagellum deeply impressed, surface of joints roughened. 

 Thorax black, a yellow stripe on the prothorax and on the scutellum ; 

 tubercle black, but behind it an oblong yellow spot, propodeum with a 

 very distinct enclosure, with five equidistant distinct straight ridges 

 on each side of the narrow mesial furrow ; these ridges are larger and 

 more distinct than in G. phaleratua, but become obsolete towards the 

 end of the enclosure; posteriorly are very coarse unequal, mostly pa- 

 rallel rugae, with a sparse grey pubescence, and two yellow dots on the 

 middle of the wing, where in G. phaleratus it is smooth and polished, 

 wings unusually clear, 3d costal cell darker; nervules blackish through- 

 out; legs deep black and yellow; fore and middle femora black, tipped 

 with yellow, and with a yellow line beneath ; hind femora entirely 

 black; tibia; black, yellow beneath; anterior and middle tarsi honey- 

 yellow, hind tarsi brown-black. Abdomen black, polished, with broad 

 yellow rings, of which the basal is broadest, with a deep mesial sinus 

 in front; 2d very broad, remainder linear; beneath all the bands are 

 obsolete except on the 2d ring; tip black. 



Length, .40 inch. 



Brunswick, Me., not infrequent in August on flowers. 



Differs from G. phaleratus in the dull black coarsely punctured 

 body, with a spare grey pubescence, the very rugose propodeum. with 



