AMERICAN IIYMENOPTERA. 149 



21. Pimpla rufovariata, n. sp. — 9- — Black, shining; palpi and antennre be- 

 neath, pall' lutoons; the incisures of latter blackish, ujiper surface brown; te- 

 gulfB ])ale ; logs ferruginous, ])ostorior tarsi paler, with tips blackish, tips of 

 tibioe also blackish ; wings dusky hyaline, nervures and stigma black, areolet 

 suhtriangular ; abdomen closely and confluently punctured, second, third and 

 most of fourth segments sanguineous, Mnth a short, black, transverse line on 

 each side of apex, lateral swellings prominent; venter more or less sanguineous ; 

 head and thorax obsoletely punctured ; metathorax rugulose, with prominent 

 longitudinal carina; ; ovipositor one-fourth the length of abdomen. Length 

 4 lines. 



Var. 9- — Abdomen entirely sanguineous except apex, which is obfuscated, 

 and the lateral black lines on apical margin. Length 2i lines. 



J[(ih. — Pennsylvauia; New Jersey. Quite distinct from all the 



other known species of this i^enus. 



POLYSPHINCTA, Grav. 

 The species of this genus have much the appearance of those of 

 Pimpld^ but may be at once separated by the absence of the areolet of 

 anterior wing. 



Only three species arc known to me, which may be arranged as fol- 

 lows : 

 Abdomen punctured or rugulose. 



Posterior tibiae white, biannulate with black; their 



tarsi black, white only at base of first joint 1. tsxana, n. sp. 



Posterior tibiae white, black only at apex; their tarsi 



white, black at tip of all the joints 2. Burgessii, n. sp. 



Abdomen polished, impunctured :;. limata, n. sp. 



1. Polysphincta texana, n. sp. — 9 • — Black, shining ; mouth rufo-piceous : pal- 

 pi, tegukc and dot before, whitish; wings hyaline, nervures and stigma black, the 

 latter pale at base; legs yellowish-red; apex of anterior coxa;, four anterior 

 trochanters and their tibite, anterior tarsi except tips, and base of intermediate 

 tarsi, pale yellowish ; intermediate tibiae with a black spot behind near base , 

 their tarsi except base fuscous ; posterior tibiae white, a narrow band near base, 

 their apical fourth and a stripe within, not reaching their base, black ; apex 

 of their femora and their tarsi, except basal half of first joint which is white, 

 also black; antennae about three-fourths the length of the body, slender; face 

 narrow; clypeus convex; eyes large, prominent, ovate ; head and thorax pol- 

 ished; mesothorax prominently trilobed ; scutellum raised, carinate laterally; 

 metathorax rounded, densely clothed with pale pubescence; legs subrobust; 

 abdomen elongate, rather robust, closely and distinctly punctured, more sparse- 

 ly so on apical margin of the segments which are prominent, lateral swellings 

 prominent and rounded, segments deeply incised at base, first segment deeply 

 grooved at base, the groove converging to apex; apical segment short, blunt, 

 obsoletely punctured; ovipositor very short; venter whitish, with lateral black 

 spot on each segment. Length 5 lines. 



Hah. — 1'exas. 



2. Polysphincta Burgessii, n. sp.— -^ .—Black, shining; palpi,tipof first and 

 second (cnlirLly) ji^ints of antennte beneath, tegulse, dot before, four anterior 



TIIANS. AMER. ENT. SOC. (20) SEl'TEMlilCU, 1870. 



