140 



HTMENOPTERA OF AMERICA. 



[part I. 



metathorax small, very strongly and densely punctured, offering 

 in the middle a little excavation, distinctly striate. Abdomen 

 smooth, shining; the first segment funnel-shaped, subcampanu- 

 late, subpediculate, bidentate, strongly punctured and divided 

 above by a distinct groove ; border of the second and following 

 segments densely punctured; the margin of the second and third 

 slightly upturned. 



Insert black, shining. Antennae ferruginous beneath. Wing 

 scales ferruginous, at times marked with yellow. A point behind 

 each eye, a mark on middle of prothorax and border of segments 

 1, 2, yellow; the border of the first enlarged in the middle; 

 border of third segment piceous; tibia; and tarsi yellow. Wings 

 of a transparent brown, with beautiful violet reflections. 



% . Clypeus wide, truncate, yellow. A mark on the front and 

 a line on the scape of antennae, yellow; their hook ferruginous; 

 the third abdominal segment often bordered with yellow. 



Var. No spot on the front, nor yellow border on the second 

 abdominal segment (Florida). 



I/<ih. The eastern United States, Florida, New York, Con- 

 necticut (3 ?, 3 %, E. Norton). 



o. X.Tolfeca n. pp. (Fig. 13, 13a.) — Ferruginea, fulvo-liirsuta, sparse 

 puuetato-cribrata; clypeo bidentato; thorace 9 dilatato, latissimo, 

 inaximo, depresso ; % normali; abdomine velutino, punctato, primo 

 segmento infundibulifornii, supra linea impressa paitito ; secundo duplo 

 latiore, margine reflexo ; an tenuis ultra 4 m articuluin supra nigris ; alis 

 ferrugineis, frequenter cyanescentibus. 



Variat. Vertice, mespnoto, thorace subtus, abd. segmeutis basi, nigris ; 

 seginentis flavo-limbatis ; corpore flavo maculate 



% . Minor ; clypeo polygonali, flavo ; antenuaruui uncino ferrugiueo. 



9 . Total length, 22 mm. ; wing, 17 mm. 

 % . Total length, 18 mm. ; wing, 13 mm. 



?. Insect very stout, wide and depressed. Labial palpi com- 

 posed of four articles; the fourth quite small; the maxillary, of 

 six articles, the 2d and 3d long and slender; the last three small. 

 Clypeus pyriform, wide, punctured, offering two little obtuse 

 mammillae; its inferior margin thinned, armed with two little 

 separated lamellate teeth. Between the antennae is a transverse 

 carina, almost forming a little tubercle. Thorax strongly de- 

 pressed, very wide, much wider than high, wider than the abdo- 

 men. Scutellum and post-SCUtel flat and depressed; metathorax 



