No. 2312. NEW NORTH AMERICAN HYMENOPTERA—ROHWER. 215 



antennae, spot inclosing the ocelli, one on the postocellar area, spots 

 on the prescutum, scutum, apex of the scutellum, posterior margin 

 of the scutum, mctathorax mcdianly, all of the tergites medianly, 

 black; legs yellowish; hind tarsi dusky; hind tibiae ferruginous; the 

 color on the ventral part of the body is distinctly paler than on the 

 dorsal part; wings hyaline; costa and stigma pale brown, remaining 

 venation dark brown. 



Type locality. — ^Harrisburg, Pennsylvania. Described from four 

 females (one type) reared from larvae collected on Salix and recorded 

 under Bureau of Entomology No. Hopk. U.S. 11398r. Material col- 

 lected by A, B. Champlam and reared by William Middleton. 



Type.— Csit. No. 21795, U.S.N.M. 



PTERONIDEA AMELANCHIERIDIS, new species. 



This species belongs in with militaris (Cresson) and thoracica 

 (Harrington) but is readily separated from both of these by the 

 black venter. Marlatt confused more than one species both under 

 the name of militaris and thoracica. The species from Amelanchier 

 determined as thoracica, however, seems to be correct. 



Female. — ^Length 5 mm.; length of antennae 4.5 mm. Kobust. 

 Anterior margin of the clypeus deeply, arcuately emargmate, the 

 lobes narrow and sharply triangular; supraclypeal foveae deep, con- 

 nected with the antennal foveae; supraclypeal area strongly convex; 

 middle fovea elongate, breaking through the crest; ocellar basin pent- 

 agonal, walls roimded; a distmct longitudinal groove extendmg below 

 the anterior ocellus; postocellar area fiat, sharply defined on all sides; 

 postocellar furrow angulate anteriorly; postocellar line a trifle longer 

 than the ocellocular line; head shining; third antennal joint slightly 

 shorter than the fourth; antennae only gently tapering; thorax 

 shining; stigma rounded below, about four times as long as the great- 

 est width; third cubital rectangular in outline, about one half times 

 as long as broad; second recurrent the length of the second intercu- 

 bitus before the end of the cell; sheath straight above, acute at the 

 apex, sharply oblique to the broad base. Black; angles of the pro- 

 notum, mesepisternum, sternum, metasternum, spots on the side of 

 the scutum, and legs to the apices of the femora, rufous; the four 

 anterior tibiae and tarsi, the basal haK of the posterior tibiae, white; 

 apical half of the posterior tibiae and all of the hind tarsi, black; 

 wings hyaline, venation dark brown. 



Paratypes indicate that the rufous marks on the scutum may be 

 entirely wanting, and the apical joints of the anterior tarsi may be 

 black. 



Type locality. — East River, Connecticut. Described from three 

 females (one, type) reared from larvae collected by Charles R. Ely, 

 feeding on Amelanchier caTuidensis, and recorded under Bureau of 



