16 Journal New York Entomological Society. t Vo1 - xxvu. 



large, raised, smooth space above. Abdominal petiole as long as wide, 

 coarsely roguse above, striate below ; striae at base of second segment some- 

 what longer than the petiole, the lateral ones not so long as the median one. 

 Legs not thickened ; longer spur of hind tibia nearly half as long as the 

 metatarsus ; appendage at base of four anterior tarsal claws stout, shorter 

 than the claw. Wings slightly tinged with yellowish or brownish ; stigma 

 broad, sub-triangular ; radial cell one third as long as the stigma, radial vein 

 meeting the costa at an angle of more than 45° ; other veins not indicated as 

 streaks. 



One specimen from Oroville, Wash., May 1, 1912 (A. L. Me- 

 lander). 



This species is readily distinguishable by the sculpture of the pro- 

 podeum in addition to other characters given in the key to species. 



Exallonyx parvulus new species. (Fig. 20.) 



<$. Length 2-2.5 mm - Black ; tegulae yellowish brown, antennae piceous, 

 legs yellowish brown, but strongly infuscated on the trochanters and femora, 

 and less strongly so on the tarsi of the four posterior legs. Head about one 

 half broader than long, considerably and evenly narrowed behind; ocelli in a 

 flattened triangle, the posterior pair equidistant from one another and from 

 the eye-margin. Malar space nearly as long as half the width of the eye, 

 with a distinct furrow. Head strongly narrowed below, the margin of the 

 clypeus straight or slightly concave. Eyes sparsely pilose. Antennae rather 

 short and stout, especially at base; the flagellar joints simple; first three times 

 as long as thick, considerably longer than the second, which is scarcely over 

 twice as long as thick ; following imperceptibly shorter and thinner, the pe- 

 nultimate, however, longer than the antepenultimate. Thorax narrowed in 

 front of the tegulae, its sides distinctly concave. Posterior corners of pro- 

 thorax convexly elevated ; mesonotum smooth without trace of parapsidal 

 furrows. Impression at base of scutellum sharp and deep. Propodeum coarsely 

 reticulate, its posterior face strongly declivous and not much shorter than the 

 dorsal face; median carina distinct to apex, but stronger basally ; smooth 

 areas at sides of median carina distinct basally, but gradually passing over to 

 the reticulate sculpture on the sides and behind. Pro- and mesopleurae smooth ; 

 the punctures inside the posterior border of the latter enlarged into short 

 striae below the middle of the pleura ; metapleurae rugose below, smooth above, 

 but the smooth space not clearly limited. Petiole of abdomen quadrate, irregu- 

 larly sculptured above, coarsely striate below ; grooves at the base of second 

 segment of about equal length, longer than the petiole. Hind legs somewhat 

 thickened; longer spur of hind tibia half as long as the metatarsus; appendage 

 at base of the tarsal claws of the four anterior legs stout at base, as long 

 as the claw. Wings hyaline, stigma narrowly triangular; radial cell nearly 

 half as long as the stigma ; radius entering the costa at an angle of less than 

 45 ; disc of wing without trace of any streaks. 



