40 THE CANADIAN ENTOMOLOGIST. 



and oval, the segments closely imbricated and the sutures not at all 

 prominent. 



Halictus obiongus, n. sp. ? . — Length, 7 mm. Head and thorax 

 green, abdomen oblong, black. Breadth of head about equal to the 

 length, face densely and finely punctured, clypeus with a few coarse 

 elongate punctures, fringed with ferruginous hairs ; antennae black, 

 testaceous beneath. Mesothorax minutely and closely punctured, nearly 

 bare ; disc of metathorax rounded, rugulose, raised lines extending to 

 posterior margin, with a brassy reflection. Wings hyaline, slightly tinged 

 with brown, nervures and tegulse reddish brown. Abdomen unusually 

 long, nearly bare, shining, apical segments with a very thin whitish 

 pubescence. 



(J. — Length, 6mm. Slender, resembles the female; antennae long, 

 conspicuously testaceous beneath ; disc of metathorax darker, not brassy ; 

 abdomen nearly smooth. 



Both male and female specimens were taken on Eupatormm perfoli- 

 atum, August twenty-fourth. This species is distinguished by the unusual 

 length of the abdomen. 



Halictus niibiltis, n. SY). $. — Length, 6.5 mm. Head and thorax 

 green, with a brassy reflection, abdomen black, apical margins of seg- 

 ments broadly light brown. Head longer than wide, face finely and 

 densely punctured, lower half clothed with a pale fulvous pubescence, 

 clypeus purple, with a few coarse sparse punctures ; antennas black, 

 flagellum pale brown beneath. Thorax clothed with a short pale fulvous 

 pubescence ; mesothorax sparsely and rather coarsely punctured ; 

 metathorax sharply truncate, disc bluish-green, coarsely rugose, rugse 

 extending to posterior margin, at each superior lateral angle there is a 

 salient rim extending a short distance each way, centre emarginate ; 

 truncation grooved, pubescent. Wings hyaline, clouded with white, 

 nervures light yellow, tegulae impunctate, piceous. Abdomen without 

 punctures, shining, the extreme sides of first and second segments and 

 apical segments entirely covered with a rather dense fulvous pubescence. 

 Taken on Iris versicolor and Solidago. The four species described 

 above belong to that section of Halictus for which Mr. Robertson has 

 proposed the name Chloralictus. 



