1908] GIRAULT — NORTH AMERICAN CHALCIDOIDEA 115 



DESCRIPTIONS OF THREE NEW NORTH AMERICAN CHALCIDOIDEA 

 OF THE SUBFAMILIES MYMARINAE AND APHELININAE. 



BY A. ARSfeNE GIRAULT, OFFICE OF THE STATE ENTOMOLOGIST, URBANA, ILLINOIS. 



Family MYMARIDAE. 

 Subfamily Mymarinae. 

 Tribe Mymarini. 

 1. Stichothrix bifasciatipennis species nova. 



Female: — Length 2.108 mm.; wing expanse 3.199 mm.; length of forewings 

 1.454 mm.; width of forewings 0.364 mm. Comparatively, very large. 



General color, dark reddish brown; antennae, legs, and venation in general, 

 yellowish brown, paler; club and 4-5 apical funicle joints of antennae intermediate 

 in color, somewhat dusky, as are also the coxae and femora of the intermediate pair 

 of legs, the femora of the anterior and intermediate legs, and the tibiae of the inter- 

 mediate legs; the apical three-fourths of the posterior tibiae very dark, more dusky 

 than the general color of the body; the tarsi, and the tibiae of the anterior legs, lemon 

 yellow; articulations of the leg segments and their extremities, pallid; trochanters 

 pale yellow; apical tarsal joints dusky. 



Head (caudal aspect) subquadrate, narrower cephalad, the eyes rather small, 

 dark, the vertexal carina present, dark; the three oceUi in a slightly curved hne, 

 the middle one more cephalad, the distance between them being about the same as 

 the distance between either of the lateral ones and the margins of the eyes. Thorax 

 slender, not as long as the body of the abdomen, the parapsidal furrows distinct, 

 complete, curved; the scutellum with a longitudinal furrow on each side of the median 

 Une (evident on one side in one specimen only) ; the base of the mesoscutum straight. 

 Abdomen compressed, from lateral aspect acutely ovate, its petiole longer than the 

 posterior trochanters, the sheaths of the ovipositor exserted distinctly beyond the tip 

 of the abdomen, the ovipositor issuing far anterior to the tip of abdomen. Body im- 

 punctate, smooth, with scattered setae. Metathorax apparently noncarinate. 



Legs long and slender, especially the posterior pair, which greatly exceed the 

 length of the addomen, and are about as long as the abdomen and thorax combined; 

 the proximal tarsal joint of the cephalic legs subequal in length to the three remaining 



