l4 PROCEEDINGS OF THE NATIONAL MUSEUM vol.80 



Thorax with middle lobe of mesoscutum not rising distinctly above 

 level of lateral lobes; notauli distinctly foveolate only posteriorly; 

 propodeum completely rugulose and opaque; sides of pronotum 

 mostly rugulose ; mesopleura confluently punctate below ; metapleura 

 mostly punctato-rugulose ; legs shorter and stouter than is usual in 

 Macrocentrus; all femora short and somewhat thickened; anterior 

 metatarsus not distinctly half the anterior tibia; apical segment of 

 anterior tarsus as long as the second; calcarium of anterior tibia 

 about half the metatarsus; longer calcarium of posterior tibia half 

 the posterior metatarsus; trochanters without distinct teeth out- 

 wardly at apex; stigma emitting radius from slightly beyond its 

 middle; radial cell short, ending much before wing apex; first dis- 

 coidal cell much longer than first cubital; nervulus almost inter- 

 stitial ; submedian cell closely hairy apically ; mediella slightly more 

 than twice the lower abscissa of basella, the latter longer than ner- 

 vellus; radiellan cell not widening apically. 



Abdomen slightly longer than head and thorax combined, weakly 

 compressed apically ; first tergite about twice as long as wide at apex, 

 impressed at base, delicately ruguloso-aciculate longitudinally, with 

 a distinct though shallowly impressed line down the middle ; second 

 tergite about as long as broad at apex, finely longitudinally aciculate 

 on basal half, polished on apical half ; remainder of dorsum of abdo- 

 men smooth and polished ; ovipositor sheaths slightly longer than the 

 body. 



Head black ; mandibles except tips testaceous ; palpi a little dusky ; 

 antennae brownish yellow on basal half, blackish apically; thorax 

 entii-ely black; legs uniformly honey-yellow; wings with a faint 

 dusky tinge; veins and stigma brown, the latter pale at base; ab- 

 domen black; ovipositor sheaths brown. 



Male. — Agrees with the female except for the usual sexual differ- 

 ences. The antennae of the allotype are 38-segmented and are 

 blackish. 



ry;?e.— U.S.N.M. No. 43490. 



Type locality. — Lake Placid, N. Y. 



Remarks. — Described from one female and one male collected Aug- 

 ust 15, 1896. There are four additional specimens in the United 

 States National Museum not included in the type series, labeled 

 "Chelsea, Vt., 14-VII-15, H. E. Smith, collector, W. Springfield 

 No. 915525," and two recorded as reared from Hadena devastatrix 

 Brace, at Bozeman, Mont., August 5, 1909. These six are consider- 

 ably smaller than the types but otherwise appear to be indistin- 



guishable. 



