164 ENTOMOLOGICAL SOCIETY 



dibles ferruginous ; palpi and tegulae white ; antennae much longer than 

 the body, entirely black ; legs, except coxae and other noted exceptions, 

 rufo-ferruginous ; coxae black, hind femora toward tips outwardly obfus 

 cated, tips of their tibiae and tarsi black, the basal joint of tarsi about as 

 long as joints 2-4 united. Wings hyaline, the stigma, costa and post- 

 stigmal veins brown, the internal veins pale or subhyaline, first abscissa 

 of radius equal to the transverse cubital nervure. Abdomen as long as 

 the thorax, black, with the lateral membranous margins of the first dorsal 

 segment, and the first ventral segment at sides, rufo-piceous ; first and 

 second segments rugose, the third, except at apex, finely longitudinally 

 aciculated, especially at the middle, somewhat smoother towards the 

 sides; plate of first segment slightly more than i^ times longer than wide 

 at apex, the sides nearly parallel ; the second segment slightly shorter 

 than the third, with lateral oblique furrows, widely separated at base : 

 fourth and following segments very short, smooth. 



<$. Length 1.2 mm. Black, shining, impunctate ; metathorax feebly 

 wrinkled, shining; plate of first abdominal segment and the second lon 

 gitudinally aciculated, the third, except very narrowly at extreme base, 

 as well as the following, smooth, shining; the plate of first segment is 

 fully twice as long as wide, the second segment being longer than the 

 third; while the middle and hind pairs of legs are brown, with their tro- 

 chanters and extreme base of their tibiae, yellowish. 



Hab. Canobie Lake, N. H. (Bred from an unknown Tortricid larva 

 feeding on Comptonia asplenifolta.) 



(36) Microplitis hyphantiae, n. sp. 



9, cT- Length 3 to 3.5 mm. Opaque black, pubescent; the middle of 

 the mesopleura and the abdomen smooth and shining; two basal joints 

 of antennae, the mandibles and the mouth-parts, the tegulas, and all legs, 

 including coxae, brownish-yellow, the posterior tarsi sometimes more or 

 less subfuscous; flagellum brown-black. 



Mesonotum minutely or finely scabrous, with a very delicate, nearly 

 obsolete median carina, which does not quite attain the anterior margin 

 and which on account of the pubescence is apt to be overlooked; meso- 

 sternal furrow long, broad and crenulate ; metathorax coarsely rugose and 

 more coarsely reticulated on the posterior face, with a prominent median 

 carina. Wings faintly tinged with fuscous, the areolet large, the first 

 branch of radius not or scarcely longer than the first transverse cubital 

 nervure, or the inner side of the areolet, the recurrent nervure not longer 

 than the length of the second discoidal cell, the transverse median nervure 

 joins the first discoidal cell at about its basal third. Abdomen oval, 

 polished, with the plate of the first segment in 9 broad, trapezoidal, only 

 a little longer than wide at apex, shagreened ; in ^ this plate is somewhat 

 longer with the sides slightly curved. 



Hab. Champaign, 111. (Prof. S. A. Forbes), and Cambridge, Mass. 



