248 THE CANADIAN ENTOMOLOGIST. 



5. Segments 2-4 with white pubescent patches on each 



side quadrimaculatus. 



Segments 2-4 without white pubescent patches Foxii. 



Males. 



Antennae long, joint 4 longer than 2 + 3 3. 



Antennae short, joint 4 hardly longer than 3 1. 



1. Clypeus anteriorly, mandibles, knees and tarsi, whit- 



ish quadrimaattatus. 



Clypeus anteriorly and the legs dark 2. 



2. Enclosure of metathorax semicircular pedoralis. 



Enclosure triangular ue/umoo/iis. 



3. Metathorax finely rugose, apex gibbous, shining ; small Foxii. 



Metathorax coarsely rugose ; scutel subbilobed ; flagellum festooned ; 



tarsi whitish ; larger 4. 



4. Segment 1 finely, distinctly, sparsely, punctured ; apical margins of 



segments narrowly pale testaceous arcuatus. 



Segment r almost impunctate ; insect more slender, blacker, knees 

 more whitish , truncatus. 



Chloralictus, gn. nov. (Type Halictus Cressonii, Rob.). 



Females. 



Tegulaa not punctate 2. 



Tegulae punctate 1. 



r. Metathorax sharply truncate, with a sharp edge ; wing whit- 

 ish nymphcearurn. 



Metathorax hardly truncate, the edge blunt tegular is. 



2. Abdomen not metallic 6. 



Abdomen greenish or bluish 3. 



3 Mesonotum shining, sparsely punctured ; abdomen thinly pubescent ; 



head hardly longer than broad ; cheek broad and rounded 5. 



Mesonotum opaque, finely rugose, closely punctured ; abdomen 

 densely pubescent ; head distinctly longer than broad ; cheek 

 narrow .| . 



4. Wing and pubescence yellowish ; mesonotum brassy pilosus. 



Wing and pubescence whitish; mesonotum pale greenish, .pruinosus. 



5. Dark blue aeruleus. 



Brassy green zephyrus. 



6. Mesonotum rather finely punctured 8. 



Mesonotum rather coarsely punctured 7. 



