342 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 52. 



deep, rather finely crenulate, converging behind, meeting before the 

 scutellar fossa, and not continued to tliis fossa as a distinct groove; 

 median lobe distinctly flat grooved medially, at least in front, lateral 

 lobes sHghtly flattened in the middle of the disk of each ; hind angles 

 of the mesoscutmn produced into broadly roimded, vertically com- 

 pressed lobes; scutellar fossa rather shallow as compared with other 

 species, the bottom concave, the front wall sloping strongly forward, 

 with a single prominent longitudinal carina bisecting it; scutellima 

 relatively broad and short, sides rounded off, not tapering strongly 

 behind, apex blimtly rounded; mesopleurae sparsely punctured and 

 hairy over the whole of their surface, more densely so below and on 

 the venter; meso pleural furrow shallow, deeper behind and fading 

 out completely in front, about as long as half the width of the pleurae, 

 running diagonally upward; metapleurae sinning, sparsely and rather 

 coarsely punctured, only the lower border roughened and with ridges ; 

 propodeum coarsely areolate, the median ridges most widely sepa- 

 rated behind, coming gradually to meet each other in front; spiracles 

 oval. 



Wings. — Length, fore, 7 mm., liind 5.5 mm.; fuliginous, venation 

 and light spotting typical. 



Legs. — Entirely red, except all the tarsal claws, the apices of the 

 liind tibiae, and all the hind tarsi and the extreme base of the meta- 

 tarsus; hind tibiae with 2 stout spines at the apex just above the 

 smaller apical tibial spur; middle tibiae usually with 1, often with 2 

 apical spines. 



Abdomen. — Length about 4 mm., elongate, slender, lanceolate, the 

 first segment relatively very long, and only sUghtly widened toward 

 the apex; the tergite of segments two and tln-ee also very long, these 

 three segments occupying almost fom--fifths of the length of the ab- 

 domen, the division between the second and tliird segments indicated 

 dorsally by an indistinct flat groove; color wholly red, but sometimes 

 with blackish diffusion either near the middle or apically; ovipositor 

 red, the sheaths black, length about 3.5 nun. 



Male. — ^Apparently resembles the female in all essential structural 

 characters as weU as in coloration; first three segments of the abdo- 

 men not occupying more than two-thirds of its total length. 



Described from 12 female specimens from Falls Church, Virginia, 

 June and July (3), Great Falls, Virginia, Jmie 27 (1), Washington, 

 District of Columbia, June 20 (1), Westville, New Jersey, August 30 

 (1), and 1 each from "N. Y.," "Miss.," and "N. C," while three 

 specimens have no data accompanying them, and 9 male specimens 

 from "Falls Church, Va., July and Aug." (3), Philadelphia, Pennsyl- 

 vania; (1), Glenside, Pennsylvania, June 8 (1), Wallace, Kansas, July 

 (1), Lexington, Kentucky, (1), "L. I." (1), and a bred specimen 

 without host or locality record. 



