G. C. DAVIS. 255 



of hiurt coxa? and broader bands on the abdomen, yellow; the median stripe on 

 segments 1-4 distinct, separating the black cross-bands. 



Two females and one njale from Canada, New York and Michigan 

 (type, coll. Amer. Ent. Soc). 



Eureros obesa n. sp. 



9 (?) — 11 mm. Black, with yellow markings as follows: front except spots 

 above antennje, broad orbital lines broken above, mouth-parts except tips, mandi- 

 bles and sides of clypeus, diagonal line above anterior coxse, broken median and 

 broad marginal lines on mesonotnm, tegulse. large stripe in front, line beneath 

 primary and secondary wings, broad diagonal expanding line from middle coxse 

 to prothorax, metathorax except basal suture, scutellum except dot on each side, 

 postscutelluni and capillary lines, oval spot at base of abdomen, apical half of all 

 the segments ; the legs are also yellow except the posterior, which have a black 

 spot above and another inside the coxse. dusky rufous femora, apical half of tibise 

 and basal segment of tarsi, which are piceous: wings with veins brown, stigma 

 black, costal mai-gin and base of stigma fulvous: apex of wings dusky : antennje 

 wanting; coarsely and rather closely pitted on all parts of the body. 



. A large, robust specimen from N. Illinois (Dr. W. A. Nason). 

 Type, coll. G. C. D. 



Euceros couperii Cress., Can. Ent. i, 104. 



9 . — 6-10 mm. Head, thorax, legs and antennse black, with yellow markings ; 

 abdomen rufous, black on first segment; broad orbital lines, broken above, small 

 T above antennae, clypeus, mouth-parts except tips of mandibles, margins of 

 mesonotum extending onto middle lobe, tegulse, spot in front, line beneath, one 

 or two spots on mesopleurfe, at least margins of scutellum. postscutelluni, four 

 anterior legs except coxse, hind legs with trochanters, base and apex of femora, 

 base of tibije, and usually all of tarsi, yellow; apical third of antennse and apex 

 of hind femora are fulvous; the mesonotum sometimes has the yellow markings 

 margined with rufous ; the abdomen is dark rufous, with two black lateral patches 

 on basal segment ; wings hyaline, dusky at apex ; body shining, finely punctured. 



% . — Differs in having the entire face, sternum, pleurae, except upper portion, 

 yellow; antennae entirely fulvous, dusky within and pale without in the middle. 



Four females from New Hampshire (Mt. Washington, Mrs. Slos- 

 son) ; Z from Canada (t^ype, coll. Amer. Ent. Soc). 



Euoeros frigidiis Cress., Can. Ent. 1, 105. 



9- — 8 mm. Mostly ferruginous; basal two-thirds of antennae, occiput, vertex 

 around ocelli, face, border of mandibles, prothorax, sutures between mesonotum 

 and pleurites, posterior tibiae except at base and base of first tarsal segment, black 

 or piceous; broad orbital lines, connected above antennae, cheeks, clyi)eus, base 

 of mandibles, palpi, margin of mesonotum except in front, tegulae. line beneath, 

 broad margin of scutellum, postscutellum, trochanters, base of posterior tibiae, 

 more or less of tarsi, and narrow apical margin of three basal segments of abdo- 

 men, pale yellow ; apex of antennae fulvous. 



% has the entire face, except at base of antennae, yellow ; the mesonotum and 

 base of posterior femora blackish ; the antennae have the broadened portion yel- 

 lowish with the inside made dusky by two longitudinal dark stripes originating 

 at the base ; apex dusky fulvous. 



TRANS. AM. ENT. SOC. XXIV. SEPTEMBKE. 1897. 



