1888.J PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. G55 



PH.EDROTOMA Forster. 



(?) Phaedrotoma sanguinea n. sj). 



Male and female.— Length, 5| to 6" ,m ; ovipositor, 3 mm . Sanguineous, 

 smooth, polished; eyes, steinmaticuui, antennae, legs, and ovipositor 

 black; posterior coxre red. The antennae in the male are very long, 

 48-jointed, in the female broken; the parapsidal grooves are only indi- 

 cated anteriorly, the middle lobe posteriorly has a deeply-impressed 

 fovea ; the fovea at base of the scutellum has several raised lines at the 

 bottom ; metathorax somewhat rugose; abdomen sessile, ovate, the up- 

 per surface couvex, beneath in the male concave, in the female com- 

 pressed into a keel ; the plate of the 1st segment is trapezoidal, its disk 

 lined; the following segments smooth, polished. Wings smoky; the 

 subinedian cell longer than the median, and the recurrent nervure joins 

 the 2d submarginal cell just beyond the 1st transverse cubital uervure, 

 almost interstitial with it. 



Habitat. — Washington, D. C. 



Described from several specimens, labeled No. 3737 x , reared October 

 3, 1885, from a Tri/peta living in bolls of Solatium carolinense. 



Subfamily LIOPHRONINiE. 



CENTISTES Haliday. 

 Centistes virginiensis n. sp. 



Female. — Length, lf mm ; ovipositor, f" lnl . Black, smooth, polished; an- 

 tenna? 17-jointed, moniliform, brownish black; legs brown, obfuscated; 

 parapsidal grooves sharply defined, converging and meeting at base of 

 scutellum; metathorax minutely rugose; abdomen oval, convex above 

 and composed of only three segments. Wings hyaline, pubescent; 

 veins pale brown. 



Habit a t. — Vi rginia. 



Described from a single specimen, captured at large, May 15, 1881. 



Subfamily HELCONINiE. 



HELCON Nees. 

 Helcon grandis n. sp. 



Female. — Length, ll mm ; ovipositor, 12 m,n . Black, polished; the pleura, 

 metathorax, and legs piceous; tarsi fulvous. On the vertex are scattered 

 punctures, becoming thicker and confluent around orbits and on face and 

 cheeks; antennae 38-jointed; parapsidal grooves distinct, coarsely punct- 

 ured ; collar, mesopleura, and metathorax coarsely rugose; scutellum 

 with a large deep fovea at base, separated by a carina into two pares, 

 and each part has a large puncture at bottom ; abdomen a little longer 

 than the head and thorax together, subcompressed, smooth, polished, 

 black, except the disks of the two short terminal segments and the 

 sutures of the ventral segments, which are brown. Wings fuscous; 

 stigma and veins piceous black. 



