WALSH DESCRIPTIONS OF N. AM. HYMKNOPTERA. 1 49 



the different pattern of ornamentation in the legs, this might be 

 taken for the unknown ? of Exetastes flavitarsis, Cress. In the 2 

 tubercles on the 2d abdominal joint it resembles Ex. consimilis d', 

 Cress., the ? of which is also unknown, but disagrees in the same 

 respects with that species, and in addition in not having the ist 

 abdominal joint " distinctly punctured." 



Genus AROTES, Gravenhorst. 



In this genus, which is remarkable for the cubito-discoidal cell 

 receiving both recurrent veins, as in Ophion and the allied genera, 

 there are three distinct bullae, C, D, and E ; C and D separated 

 by a space as long as either of them, the 2d recurrent vein being 

 not angulated but slightly convex externally, and E about in the 

 middle between the angle of the ist recurrent vein, which is very 

 nearly straight, and the areolar cross-vein. 



[In fottnosusy Cress., vicinus. Cress., and venustus, Cress., the second 

 recurrent nervure is confluent with the areolar cross-vein. — Cresson.] 



ArOtes {Accenitus) dCCOrus, Say.— $ . — Black. ^,earf subopaque, with 

 dense, rather fine, shallow punctures ; vertex glabrous and polished. La- 

 brum small, semicircular. Face, except a longitudinal, cariniform tubercle 

 on its disk and the foveae at its tip, orbits very wide on the cheeks and be- 

 hind the eyes, but interrupted widely opposite the ocelli and narrowly or 

 sometimes scarcely by a dusky suture separating the cheeks from the face, 

 clypeus, labrum, basal i of mandibles, and palpi, all white. Antennae f as 

 long as the body, brown-black, the extreme tip pale brown. Joints 11 or 12 

 to 23 or 24 of the flagellum white. First joint of the flagellum 3i times as 

 long as wide ; joint 2 shorter by J ; the rest slowly shorter and shorter. 

 Thorax subopaque, with dense, rather fine, shallow punctures ; the disk of 

 the lobes of the mesonotum, and of the mesothoracic pleura, glabrous and 

 polished. Metathorax above subpolished with some coarse rugae, the cari- 

 nate areas all complete. Basal and central areas each subquadrate, but the 

 latter rather wider than the former. The hind angles of the lateral areas 

 not prolonged into a thorn, and the hind angles of the metathorax itself 

 rounded off. Tegulae, a broad line under the front wing, a dot or some- 

 times a triangular spot under the humeral suture near its base and a dot 

 under it near its tip, a broad line overlying the humeral suture from near 

 its tip to behind the tegula, a large quadrate spot on the disk of the mesono- 

 tum divaricating in abroad clavate line on the lateral margin of its anterior 

 lobe, both scutels extending into the areas on each side of them, the posterior 

 i of the metanotum, a large spot on the metathoracic pleura, a line on the 

 hind edge and a broad abbreviated band on the front edge of the mesothoracic 

 pleura, the latter sending off a curved branch on to the disk of the pleura, 

 and the two connected by a broad vitta at the bottom of the pleura which 

 sends off obliquely forwards a narrow linear branch on the lower face of the 



