Descriptions of New Cynipidce 203 



extending far down at the sides, the tips of the mandibles, and 

 a spot upon thetergum of the 5th abdominal segment, black; 

 feet, including coxa?, very light yellow, orbits and antennae 

 slightly rufous, other parts light yellow. 



Head: face rather finely striate, vertex and occiput 

 with numerous coarse punctures on a microscopically sculp- 

 tured surface, antennee 15-jointed, nearly as long as the 

 body. Thorax: mesonotum with fine transverse ridges, the 

 furrows between bearing coarse but shallow and somewhat 

 confluent punctures, parapsidal grooves very distinct, median 

 groove narrow and extending but a short distance, parallel 

 lines and lateral furrows not very distinct, pleurai coarsely 

 aciculated below, finely above, and with a smooth polished 

 median spot. Scutellum bifoveate, rather coarsely sculptured, 

 fovea? shallow, the sculpturing somewhat obscured by pu- 

 bescence. Abdomen ; first joint, as well as petiole of metathorax, 

 fluted, 2J segment occupying nearly the entire surface and 

 deeply notched on posterior margin of the tergum, exposing the 

 tergites of three or four following segments, ovipositor 

 sheaths projecting above the surface of the abdomen, venter 

 rather prominent. Wings hyaline, areolet rather indistinct. 



Described from two specimens bred from the galls of Acras- 

 pis villosus, taken in Iowa. 



SUBFAMILY FIGITIN^. 



Genus Coptereucoila Ashm. 



C. marginata n. sp. 



Female. — Black, 1.2 mm. in length, antennae clavate, apical 

 margin of the wings emarginate. 



Head black, mandibles ferruginous, face and vertex smooth 

 and shining, occiput finely rugose. Antennas 13-jointed, cla- 

 vate, joints 1, 2, 11, 12, and 13 thick, and joints 1, 11, 12, and 13 

 about equal in length ; joint 2 globose and about equal to joint 

 3 in length ; joints 3-10 slender and joints 4-10 but little longer 

 than broad : last three joints suddenly and greatly enlarged. 

 Thorax: collar narrow, mesonotum smooth and shining, without 

 grooves. Scutellum deeply bifoveate, polished. The rather 



