256 AMERICAN HYMENOP'J'ERA. 



Three specimens, Canada, Maine and Franconia, N. H. (Mrs. 

 Slosson). Type, coll. Amer. Ent. Soc 



Eiiceros saiigiiineii!i> n. sp. 



9. — 10 mm. Eutbus, with sutures of thorax, sternnm, apex of metathorax, 

 base of abdomeu, line on posterior coxse, tips of mandibles, spot enclosing ocelli 

 and others surrounding base of antennae, more or less black; palpi and segments 

 2-4 of hind tarsi pale yellow; the body is finely and quite evenly punctured 

 throughout, form robust ; the converging ridge at the base of the abdomen almost 

 obsolete: wings hyaline, darker than usual at apex; veins dark; costal margin 

 and stigma pale rufous. 



% with the thorax except notuni. basal segment of abdomen except a central 

 rufous stripe or two lateral dots, vertex and most of coxae, black ; yellow mark- 

 ings as in 9 with the face, orbits, cheeks, mouth-parts, and sometimes four ante- 

 rior coxae beneath, tegulfe, line above and below and spot on anterior mesopleura 

 also yellow ; auteunte dusky rufous with the inner side of segments 9-12 of the 

 flagellum blackish with yellow border and dotted with yellow pits. 



Two females and two males from Colorado (Prof. C. P. Gillette). 

 Type, coll. G. C. D. and Amer. Ent. Soc. 



£uceros thoracicuN Cress., Can. Ent. i, 105. 



%. — 9 mm. Thorax with the notum black and yellow; sternum and most of ■ 

 pleurae pale yellow ; head yellow except spot enclosing ocelli and occiput; abdo- 

 men honey-yellow, more or less stained with pale yellow on basal segments; legs 

 pale yellow with posterior legs having coxae dark above, femora honey-yellow 

 and tibiae except at base dusky red ; anteianae fulvous at apex, dusky yellow at 

 base, pale yellow in the middle with two longitudinal dark bands inside; wings 

 hyaline, faintly dusky at apex, veins and stigma pale; basal segment of abdomen 

 distinctly raised between carinae. 



Two specimens, Connecticut and Toronto, Canada (type, coll. 

 Amer. Ent. Soc). 



Euceros fVieiens n. sp. 



% . — 10 mm. Eufous with yellow markings as follows : entire head except 

 vertex, occiput, pits around base of antennae and tips of mandibles which are 

 black, tegulae, spot in front, line beneath, line above extending from tegulae to 

 beyond parapsidal grooves, line from secondary wing to middle coxae, lower half 

 of pleurae, most of sternum, spots above anterior and posterior coxae, four anterior 

 coxae, and femora at base, all the trochanters and narrow apical margins of ab- 

 dominal segments 1-3; most of prothorax, upper mesopleura, stripes on sternum 

 and apex of metanotum, black; antennae as in sanguineus; wings subhyaline, 

 faintly dusky at tip, veins brown, stigma and costal margin rufous; first segment 

 of abdomen concave at base, margined with a much elevated carina; the trans- 

 verse carina on the metathorax is also distinct. 



One specimen from Washington (type, coll. G. C. D. j. 



Euceros ineilialis Cress., Can. Ent. i, 105. 



9 . — 9-10 mm. Eufo-ferruginous with yellow markings as follows: head, ex- 

 cept dusky stain around ocelli, margins of parapsidal grooves and mesouotum at 

 sides, tegulae. line beneath, spot ou upper mesopleurse and another below near 



