104 THE CANADIAN ENTOMOLOGIST. 



spot on each side before scutellum, a broad V shaped mark on scutelluui, 

 apex of metathorax, which has two black spots above, anterior margin of 

 prothorax, a spot on each side of pleura, and the tegulae, yellow; wiogs 

 hyaline, dusky on apical margin ; legs yellow, anterior coxse in front, poste- 

 rior coxae, their femora except base and apex, and their tibia; except base, 

 black, their tarsi except tips, fuscous ; abdomen yellow ; a triangular mark 

 on each side of first segment, a transverse mark on each side of second and 

 third segments, dilated laterally, and the remaining segments, except medial 

 spot at tip of fourth segment, and another on extreme tip of abdomen, black- 

 ish ; venter entirely yellow. — Length, 5i lines. 



Eah. — Grimsby, Ont. Johnson Pettit, Esq., (Coll. Am. Ent. Soc.) One 

 specimen. 



EucEKOS CouPERii, u. sp. — %. Shining; head yellow; extreme tips of 

 mandibles, spot on vertex covering ocelli and occiput, black ; antennae ful- 

 vous, basal half fuscous within, scape black beneath, first eight joints of 

 flao-ellum with a pale medial stripe, the dilated portion with a pale posterior 

 margin ; thorax black, two parallel stripes on disk of mesothorax, interrupted 

 anteriorly, the lateral margin, broad in front, scutellum except sides and an 

 acute mark at base, postscutellum, sides and apex of metathorax, pleura 

 except a line beneath wings, and the tegulse, yellow ; wings hyaline, irides- 

 cent, apex fuliginous ; legs yellow, posterior coxae except tips and beneath, 

 their femora except base and apex, and their tibiae except base, black ; 

 abdomen ferruginous, basal segment yellowish, with a large triangular black- 

 ish mark on each side ; remaining segments have each a small, lateral, black 

 spot. — Length, 3^- lines. 



^a6. — Ottawa, Ont. (Coll. Wm. Couper, Esq.) One Specimen. 



EucEROS BURRUS, n. sp. — 9. Kufo-ferruginous, opaque; head black; 

 orbits white,^interrupted behind ; spot on middle of face, clypeus and mandi- 

 bles, pale fulvous; antennae fulvous, scape blackish; prothorax, pleura 

 beneath, and sutures of thorax, black; anterior and posterior margins of pro- 

 thorax, and the tegulas, white ; legs entirely ferruginous, tarsi paler ; wings 

 hyaline, iridescent ; abdomen shining at base and apex. — Length, 3 lines. 



5"aZ>.— Ottawa, Ont. Wm. Couper, Esq., (Coll. Am. Ent. Soc.) One 

 specimen. 



Of this interesting genus (in which the antennee of the % are broadly 



dilated and much flattened about the middle), there are seven species known 



to me as occurring in North America. They may be recognized by the 



following characters : , 



Thorax black and yellow : 



Abdomen above black, banded with yellow ; posterior legs black and yellow, 



1, Canadensis, 9 



