47 1) PROCEEDINGS OF THE NATIONAL MUSEUM vol. do 



with median depression triangular, area betv/een this depression and 

 spiracidar sulcus strongly sculptured. Tooth on posterior femur 

 short and blunt and located at approxuTiately apical one-fifth of femur. 

 Anterior wing extending well beyond apex of abdomen; submarginal, 

 margiiuil, postmarginal, and stigmal veins approximately in the 

 proportions of 40, 17, 9, and 6, respectively. 



Abdomen a little longer than head and thorax, compressed, wealdy 

 reticulated on the sides; first tergite dorsally perfectly smooth, and 

 comprising a little less than one-third length of abdomen, second to 

 fifth tergites dorsally weakly transversely acicuiated, the second about 

 half as long as the first, third and fourth each a little longer than the 

 second, fifth about as long as the second, sixth tergite finely reticulately 

 sculptured and clothed with suberect hairs, ovipositor as long as 

 abdomen. 



Male unlaiown. 



Type locality. — "Amile Hill," Colo. 



T?/p^.— U.S.N.M. No. 54266. 



One female collected by C. F. Baker and bearing his field notebook 

 No. 1330. The note under this number states that the specimen was 

 collected in July at Amile Hill in northern Colorado. The locality is 

 presumed to be in the neighborhood of Fort Collins, and the time of 

 collection was probabl}^ July 1894. 



11. MONODONTOMERUS EMARGINATUS, new species 



The deep and broad emargination of the third tergite distinguishes 

 this species at once from all other species in the collection. 



Female. — Length 4.2 mm.; ovipositor 2.1 mm. Head bluish green; 

 dorsum of the thorax greenish black; pronotum, propodeum, mesepis- 

 ternum, and coxae weakly tinged with purple; mesepimeron polished 

 greenish black; all femora metallic bluish; all tibiae and tarsi testa- 

 ceous; abdomen black, tinged with metallic; antenna! scape metallic, 

 flagellum black ; wings hyaline with a distinct fuscous cloud at stigmal 

 vein. 



Head moderately thick anteroposteriorly; ocellocular line very 

 slightly longer than diameter of lateral ocellus; eyes practically bare; 

 malar space very nearly equal to half length of ejQ) malar furrow 

 effaced except for a short distance at eye margin ; mandibles with the 

 two lower teeth subequal; anterior margin of head straight, clypeal 

 margin not protruding; face slightly swollen, especially prominent 

 just below antennae; antennae inserted on a line connecting lower 

 extremities of eyes; scape not quite attaining level of anterior ocellus, 

 distinctly sculptured; pedicel a little longer than broad; ring joint 

 large, about two-third as long as broad; first joint of funicle quadrate, 

 second to seventh funicular joints all somewhat transverse, the seventh 



