Parasitic Hymenoptera 23 g 



trochanters pale. It is quite distinct from other North American and from all 

 the European species included by Schmieceknecht in his Opuscula Ichneu- 

 monologica. 



Stenomacrus borealis Ashm? 

 Fiir Seals and Fur Sea Islands, vol. 4, p. 358 (1899). 



One specimen from Herschel island, Yukon Territory, July 29, 1916, is 

 probably this species. 



Ophion bilineatum Say. 



Ophion bilineatus Say, Contrib. Maclurian Lye. Arts & Sci., vol. 1, p. 75. (1828); Complete 

 writings, vol. 1, p. 378. 



One specimen from Cockburn point, Dolphin and Union strait, Northwest 

 Territories, September 5, 1914. This was collected at a lighted lantern in the 

 evening. 



A very abundant and widely distributed North American species. 



Dioctes modestus, n. sp. 



Female. — Length, 4-4 • 5 mm. ; ovipositor as long as the hind femur. Black, 

 clothed with sparse, short, white hair; the middle of mandibles, tips of front 

 femora, all tibiae and base of tarsi brownish yellow; wings hyaline, stigma and 

 veins pale fuscous. Head broad, twice as wide as thick, strongly excavated 

 medially behind, the temples as deep as the eyes; seen from the front, the face 

 is not narrowed below; malar space as long as the width of mandibles at base. 

 Ocelli large, paired ones closer to the eye margin than to one another. Front 

 and face opaque, minutely roughened, clypeus almost smooth, sub-shining, its 

 lower edge straight. Head behind opaque and finely roughened below, nearly 

 shining above. Eyes bare, twice as high as broad, not emarginate. Antennae 

 23-jointed; first joint of flagellum one-half longer than the second; four follow- 

 ing subequal; those beyond shortening, but all of them longer than thick. 

 Mesonotum subopaque, finely roughened. Scutellum slightly shining; with a 

 deep, smooth, transverse furrow at the base; strongly convex. Propodeum 

 declivous from base, but more strongly so beyond middle, finely rugose, nearly 

 smooth anteriorly on the sides; supermedian and petiolar areas confluent, the 

 latter the broadest, the former reaching almost to the base of the propodeum; 

 lateral and subspiracular carinae present. Pleurae finely roughened, the meso- 

 pleura with a smooth space near the root of the hind wing and a trace of fine 

 oblique striae below the root of the fore wing. Abdominal petiole with the 

 spiracles placed before the posterior third, distinctly projecting; widened from 

 just before the middle; more than tw T ice as wide at apex as at base and onc-t hird 

 wider than at spiracles; its surface roughened, except at extreme apex. Second 

 and third segments roughened, especially at base; following nearly smooth, the 

 apical segments not very strongly compressed. Ovipositor issuing at the apex 

 of the fourth ventral segment, strongly curved upward. Submedian cell slightly 

 longer than the median; disco-cubital vein angularly broken, with a stump of 

 a vein; areolet open, small and petiolate in position; transverse median vein 

 in hind wing not broken. Tarsal claws pectinate. 



Male. — Length, 4-4-25 mm. Essentially like the female; antennae 

 24-jointed; abdominal petiole more slender, as wide at spiracles as at apex; 

 tibiae darker, pale fuscous. 



Four females and two males from Bernard harbour, Northwest Territories, 

 August 7 and 12, 1915, the female type taken on the latter date. F. Johansen, 

 collector. 



