1863.] 367 



portion and the remainder red, with the back brown; the back of the 

 second segment entirely and the base only of the third black; the four 

 anterior trochanters yellow and the posterior pair ferruginous. I have an 

 injured specimen to which this description will apply closely but not de- 

 cisively. 



?,4. Campoplex assitus, n. sp. 9- Length 0.40 in. Br. wings 0.52 in. 



9- Black, with abdomen in part rufous. Antennae piceous, long and slender, 

 very finely produced toward the tip; face narrowed below the antennae; head and 

 sides of thorax with sparse white hair; on the face and pleura the punctures seem 

 to run into strise; the thorax above is finely punctured; mandibles piceous at tip; 

 basin of raetathorax with transverse strise; spiracles on the sides of segments very 

 prominent, basal and second segments of abdomen except the tip above black; api- 

 cal segments with black above, second segment with fine cross strise; legs black, 

 anterior pair yellow beneath, below the coxte : intermediate pair with a spot on 

 tips of femora above and the tibiae yellow; all the tarsi with whitish ends; wings 

 faintly clouded. 



One specimen. Farmington, Ct. 



35. Campoplex dissitus, n. sp. Length 0.40 in. Br. wings 0.52 in. 



9- Black, abdomen mostly rufous. Antennae moderate, dark piceous at tip, sec- 

 ond joint almost ruby-red; face scarcely narrowed below antennae, clothed with 

 silvery hair; the body not finely punctured and hardly shining; basin of meta- 

 thorax distinct; first and upper basal half of second segment of abdomen black; 

 remainder of second above and part of third brown, remainder of abdomen red- 

 ferruginous; spiracles indistinct; the ground color of the legs black; the four an- 

 terior femora yellowish toward the tips, the anterior tibia; and tarsi yellow, the 

 intermediate tibiae and tarsi darker above than beneath; wings faintly clouded. 



One specimen. Lake Saskatchewan (Camb. Museum). 



36. Campoplex alius, n. sp. Length 0..38 in. Br. wings 0.54 in. 



9- Black, with red and black abdomen and honey yellow legs. Antennae more 

 than half the length of body, equal in size nearly to end, piceous, with basal joint 

 palest. Face but little narrowed, apparently coriaceous; fine short silvery hair on 

 face and thorax; mandibles and paljji honey yellow; pleura wrinkled and striate 

 above, dull, with fine sparse punctures below; metathoracic basin deep, with trans- 

 verse wrinkles; the first, second (except at tip) and the final segments of abdomen 

 black; the tip of second and the the third and fourth segments ferruginous; all 

 the coxae and the posterior trochanters black; posterior tibiae at base and apex and 

 the tarsi of four posterior legs blackish, remainder of legs honey yellow. "Wings 

 hyaline, nervures and tegulse piceous. 



One specimen. Mass. (S. H. Scudder). 



37. Campoplex genuinus, n. sp. 9 %• Length 0.36 in. Br. wings 0.52 in. 



9- Black, with honey yellow legs. Antennte hardly half the length of body; 

 the whole insect sericeous with short, fine white hair; clypeus protruded, rounded, 

 palpi yellowish; face scarcely narrowed below antennae; ocelli large, ruby color- 

 ed, the smooth space beneath wings with fine curved striae; spiracle very small, 



