1888.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. G4L 



Subfamily EUPHORINiE. 

 PERILITUS Nees. 

 Perilitus gastrophysae n. sp. 



Female.— Length, 2f'» ai ; ovipositor, ±«™. Polished; stemmaticum, 

 antennae, thorax, and abdomen, black; head and legs red. Antenute 

 22-jointed; palpi yellowish; parapsidal grooves distinct, converging, 

 but not meeting posteriorly, the middle lobe thus formed posteriorly or 

 just in front of the scutellum is slightly depressed, punctulate; scutel- 

 lum triangular, with a deep transverse groove at base; metathorax 

 rugose, with some raised lines; abdomen petiolated, the petiole dilated 

 at apex, longitudinally aciculated, and more or less reddish basally. 

 Wings hyaline, veins brown ; the 1st discoidal and 1st submarginal 

 cells confluent, the marginal cell semicordate; the submediau cell is 

 slightly longer than tbe median. 



Habitat. — Washington, D. O. 



Described from two specimens, labeled No. 329 L°, reared May 31 

 and June 26, 1880, from Gastrophysa cyanea. 



WESMAELIA Forster. 

 Wesmaelia Rileyi n. sp. 



Female.— Length, 2l mm . Black, smooth, polished; ocelli, two basal 

 joints of antennae, and legs yellowish ; the abdomen more or less piceo- 

 black. The head is transverse, much wider than the thorax ; antennas 

 13-joiuted, the two basal joints globular and of nearly the same size; 

 thorax ovoid, short; the mesonotum convex, smooth, without parapsidal 

 grooves; collar not apparent; tegulae and surrounding surface yellow; 

 scutellum convex, smooth, polished, with a deep transverse groove at 

 base; metathorax areolated ; the legs are very long, slender, the hind 

 pair being much longer than the others; the middle femora are much 

 longer than their tibiae, the latter but slightly longer than the tarsi, with 

 a single apical spur; the posterior coxae are lengthened, cylindrical; 

 the femora and tibiae of about equal length, the latter with two apical 

 spurs, the tarsi but slightly shorter than the tibiae, the basal joint being 

 thickened and as long as all the other joints combined. 



Abdomen long, subcompressed, shaped very much as in the ophionid 

 genus Limner ia, the 1st and 2d segments forming a long petiole, the 

 2d being slightly longer than the 1st; the ovipositor is short. Wings 

 hyaline, veins brown ; the marginal cell is loug, lanceolate ; the radius 

 has but two branches, the 1st forming a right angle with the 2d ; the 

 1st submarginal and the 1st discoidal cells confluent, rhomboidal ; the 

 submediau cell being slightly shorter than the median. 



Described from six specimens in the Riley collection. 



This remarkable insect agrees with the definition of this genus, bat 

 seems out of place in the group, and more closely allied with the group 

 Aphidiince, where it may ultimately be placed. 



Proc. N. M. 88 41 , , _ _ lCCtf 





