AMERICAN HYMENOPTERA. 67 



the second recurrent wing-nerve received upon the second submarginal 

 cross-uervure. Klug thinks this identical with his //. miniata. 



b. Thorax partly black. 

 1. Abdomen black, 



7. H. scapularis. 



Hylotoma scapularis, Klug, Berl. Mag. vi, 1814, 208, 19, '^ . 



Jahrbucher, 231, 28. 

 Hylotoma calcanea, Say, Bost. Jour. 1, 211, 2. 

 Violaceous black; thorax reddish-yellow; wings violaceous. Length 0.45. 

 Br. wings 0.94 inch. 



9 . AntennEe bhick, extending as far as back of scutel, quite clavate, 

 deeply channeled before, punctured and covered with shorty reddish 

 hair, the two basal articles enlarged and cup-shaped at apex, the first 

 compressed in the middle. Head, breast, uietathorax, abdomen and 

 legs shining blue-black, (legs blackish,) and with rather sparse jxitches 

 of whitish hair on thorax. The prothorax, mesothorax, scutel, (except 

 its black posterior angle,) anterior angle, and a large spot on pleura, 

 reddish or honey-yellow; the first three joints of the tarsi whitish, 

 their tips black, (sometimes almost wholly black,) side spurs white, 

 sometimes difficult to see, apical spurs short, sharp. Wings ample, 

 blackish sub-fuscous, least obscure at apex, an indistinct darker spot 

 below stigma; second recurrent nervure alike in both sexes, received 

 half way between dividing nervure and middle of third submarginal 

 cell ; stigma and costa yellowish, nervures dark. 



% . The male has the antennas longer and more slender, ciliae be- 

 neath tawny. Scutel all yellowish; anterior tibias and all the tarsi 

 whitish ; wings not so dark, generally no spot below stigma. 



Var. a. Z . Thorax entirely blue-black, except the anterior angle; 

 legs whitish before, below knees ; a spot below stigma. 



Var. b. % . Sides of metathorax and the pleura black, apical half 

 of wings clear. (English River and Lake Saskatchewan). Penna. 



New Hampshire, Connecticut, Pennsylvania, Maryland. Hudson's 

 Bay Territory, English River, Lake Saskatchewan, (Smithsonian In- 

 stitute). 



Specimens from Mt. Washington, N. H. have the wings darker vio- 

 laceous and the scutel mostly black. The rufous spot on the pleura is 

 sometimes indistinct. 



8. H. dorsalis. 



Hylotoma dorsalis, Klug, Jahrbueh., 1834, 236, 44, 9 . 



" Black, with the back of thorax red ; breast and sides black ; wings 

 blackish, with black nervures and stigma." 

 Mexico. Probably the same as above. 



