March. 1919.] BRUES : XORTH AMERICAN SERPHID.E. 13 



Distinguished from E. ashmeadi sp. nov., the only other species 

 with dentate antennae known from the Eastern states, by the simple 

 first flagellar joint. It is quite possibly the male of some described 

 species known only in the female sex, but I cannot associate it with 

 any degree of certainty. 



Exallonyx ashmeadii new species. (Fig. 14.) 



<$■ Length 3.5-4 mm. Black ; tegulae, legs, and base of antennae honey- 

 yellow : middle and hind coxae blackish on basal half ; antennae blackish on 

 apical half. Head almost twice as broad as thick, not very much narrowed 

 behind the eyes ; ocelli in a flat triangle, the posterior pair as far from one 

 another as from the eye-margin ; seen from the side, the eyes are removed 

 from the hind margin of the head by a little less than their width ; malar space 

 as long as half the width of the eye, with a delicately impressed furrow, 

 deeper above near the eye. Clypeus with the anterior edge straight ; head 

 much narrowed below when seen in front view. Antennae reaching to the 

 base of the second segment of abdomen ; first to sixth flagellar joints each 

 with a carinate process externally, more prominent on the second, third and 

 fourth joints, and very small on the sixth. Scape slightly more than twice 

 as long as thick; flagellar joints gradually decreasing; first three times 

 as long as thick ; others in approximately the same proportion except the 

 elongate slender last joint. Mesonotum smooth, much narrowed anteriorly, 

 without trace of furrows ; depression at base of scutellum narrow, deep. Pro- 

 podeum sharply declivous behind, the horizontal portion much longer than 

 the declivity ; median carina distinct on horizontal face ; smooth areas on 

 each side of carina distinct, half as long as the carina ; propodeum else- 

 where rugose-reticulate. Pro- and mesopleurae smooth, the punctures before 

 the posterior edge of the latter not elongated below ; metapleura with a round 

 fovea and crescentic smooth space above. Abdominal petiole as broad as 

 long, roughly sculptured above, coarsely striate below ; second segment with 

 the basal striae short, of equal length, the lateral one widened into a broad 

 depression behind. Legs long, rather stout ; longer spur of hind tibia half as 

 long as the metatarsus, claws of four anterior tarsi each with a long, stout 

 appendage at base. Wings hyaline without cubital or discoidal streaks ; 

 stigma rather broad, radial cell half as long as the stigma, the vein entering 

 the costa at an angle of about 45 z . 



Type and three other specimens from Machias, Maine. July 20. 

 1909 ; a fourth specimen from Eastport. Maine, July 14. All were 

 collected by Mr. C. W. Johnson. Type in the collection of the Bos- 

 ton Society of Natural History. 



I believe that this is the form mentioned by Ashmead from the 

 Eastern states as Proctotrupcs calif ornicus Holmgren. It is dis- 

 tinct from any western form that I have seen. 



