314 BrLLETIN Jr., tINlTKI) STATES NATIONAL Ml'SEUM. 



Polygnotus utahensis, s\i. uov. 



(? 9. Length,!' Bhuk, ]«)lislie»l; lieiid tlnic*^ as wide as tbick 



antero-posteriorly, the vertex in 9 angnliuly produced over the eye, but 

 not in the i , posteriorly not acii^uhited, or only faintly aeiculated in 9 , 

 perfectly smooth in S , the face smooth. Antennie 10-jointed, l)Iack or 

 brown-blaek; pedicel a little longer than the second funiclar joint; first 

 funidar joint very small, rounded; second and third about equal; club 

 o-jointed, the joints, exc('i»t the last, longer than thick. In the S the 

 second funiclar joint is distinctly longer than the pedicel ; club G-jointed, 

 the joints about twice as long as thick, pedicellate. 



Thorax ovoid, i)olished, with the niesonotal grooves slightly indicated 

 posteriorily and with some pubescence just in front of the scutelluui. 

 Scutelluni in 3 subconvex, i)ubesccnt with a slight median carina; 

 in 9 high, transversely, convex, polished. Metapleura in 9 bare, finely 

 sculptured; iu S sericeous. Teguhe rufo-piceous. Wings liyaline, 

 pubescent. Legs black or brown-black, tarsi piceous, in 3 the knees, 

 tips of anterior tibia', and all tarsi, honey yellow. Abdomen not longer 

 than the thorax, polished, the petiole and foveohe at base of sec<md 

 segment, striated. 



Habitat.— Pariah, Utah. 



Types in Xational ^Fuseum. 



Described from two specimens, 1 ^,19, received from A. L. Siler, 

 and bred during July, LS81, from a Cecidomyiid gall on Ariemixia 3- 

 dentata. 



Polygnotus cynipicola, sp. nov. 



$ 9. Length, 0.60 to 0.80 '. Black, polished; head 3.^ times as 



wide as thick auter()-i)osteriorly, the vertex posteriorly very faintly 

 aeiculated, the face smooth, polished. Antenuje 10-jointed, brown- 

 black ; pedicel as long as the second funiclar joint, piceous ; first funiclar 

 joint very minute, yellowish, third, longer than the second; club 

 5-jointed, broad, the joints, except the last, slightly wider than long; 

 in i the club joints are longer than wide, covered with white bristles, 

 the last pointed, fusiform. Thorax ovoid, polished, the niesonotal fur- 

 rows faintly indicate<l posteriorly, the basal tii>s of the middle lobe 

 slightly elevated. Scutelluni high, transversely convex, sparsely 

 ])ubesceut posteriorly. Metapleura bare, aeiculated, in S slightly seri- 

 ceous. Teguhii black. Wings hyaline, pubescent. Legs black or 

 brown-black, the tip of anterior tibiae and all tarsi, honey-yellow. 

 Abdomen not longer than the thorax, polished, the petiole and the 

 foveolai at base of second segment striated, the third and following 

 segments with transverse rows of punctures. 



Habitat. — Arlington, Va. 



Types in National Museum. 



Described from several specimens, bred July 3, 1883, from a Cynipid 

 gall, NeuroteruH hatatus Fitch. 



