184 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



DIAULINUS BEGIN! Ashmead. 



Female. — Type. Length about 1.5 mm. Blue-green, with some 

 bronzy tints; pedicel about as long as first joint of antennae; second 

 joint somewhat shorter than first; club three-jointed and with a 

 terminal spine; mesoscutum with shallow, rounded punctures; 

 sculpture of scutellum much finer, more like reticulations, scutellum 

 about twice as long as the distance between the two furrows on it; 

 metanotum polished, almost smooth, having very faint traces of 

 shallow punctures, propodeum polished, with similar, more apparent 

 sculpture; femora brown, with metallic luster, their tips and the 

 tibiae and tarsi whitish ; tibiae with a narrow browTi annulus near base. 



Type.— Cat. No. 12740, U.S.N.M. 



One specimen mounted a card point and bearing the following 

 label: ''Sh. 21. 9. 96." 



Many specunens determined as this species were received from the 

 Bureau of Entomology, reared from Agromyza from Salt Lake City^ 

 Utah; Manhattan, Kansas; and Lafayette, Indiana. 



DIAULINUS PULCHRIPES, new species. 



Female. — Length about 1.25 mm. Green, mesoscutum with 

 rounded almost thimble-like punctures; sculpture of scutellum much 

 finer, reticulate; parallel furrows on scutellum almost as far apart 

 as the length of scutellum; metanotum and propodeum polished, 

 almost smooth, less distinctly sculptured than in hegini Ashmead; 

 postmarginal vein hardly longer than stigmal, the stigmal knob 

 enlarged and elongated and so almost subsessile; marginal vein 

 somewhat thickened; coxae and femora green, tibiae brown with 

 metallic tmts, apices of femora, bases of tibiae, apical annulus on 

 front tibiae, apical half of middle and apical third of hmd tibiae 

 yellowish- white. 



Male. — Unknown. 



Habitat. — ^Algonqum, Illmois. 



Two specimens from Doctor Nason in the Ashmead collection. 



Type.— Cat. No. 14793, U.S.N.M. 



This is the species given under the name Solenotus pulchripes by 

 Doctor Nason in his list of Algonquin Hymenoptera. 



DIAULINUS WEBSTERI. new species. 



Female. — Length about 1.25 mm. Dark green, similar in sculpture 

 to the above, but the punctures of the mesoscutum finer; the sculpture 

 of the scutellum so fine that the surface appears silky; fuiTows on 

 scutellum about half as far apart as length of scutellum; metanotum 

 smooth; propodeum with faint traces of punctures; postmarginal 

 vein distinctly longer than the stigmal; stigmal knob normal, so 

 that it is not subsessile; marginal vein not thickened; legs green; 



