90 THE CANADIAN ENTOMOLOGIST. 



Body black, glossy. Antennae, mouth, mandibles, and palpi pale chesnut 

 or mahogany colour; the former more dilute at the apex; front with three 

 or four slight furrows between the eyes ; upper-lip very short : prothorax 

 heart-shaped, constricted posteriorly, convex in the disk ; sides and base 

 depressed and lightly punctured : elytra dark piceous, striated or slightly 

 furrowed : furrows very obsoletely punctured; interstices very flat; between 

 the 2nd and 3rd furrows, adjoining the latter, are from three to five shallow 

 but rather large impressions : the legs are slender, of a pale chesnut or 

 mahogauy colour, in one of the specimens the thighs are darker than the rest 

 of the leg. NB. — In one specimen there are three and in the other five 

 impressions. 



18. Ciil^enius sericeus, Forst. — [Say's Ent. Works, ii. 483.] — Several 

 taken in the journey from New York to Cumberland-house. In Canada by 

 Dr. Bigsby. [Very common throughout Canada.] 



[21] 19. CHLiENius impunctifrons, Kirby. — [This name is preoccupied 

 by Say; Kirby's species is probably identical with LeConte's C.brevila- 

 bris.~] Length of body 5-5| lines. 



Smaller than G. sericeus, though like it. Head without punctures ; 

 antennas black, with the three first joints testaceous : scutellum not acumin- 

 ate : elytra black with a shade of green ; apex of the epipleurae or side-covers 

 and legs testaceous; coxae chesnut. In other respects this agrees with the 

 preceding species. 



20. Chl^enius nemoralis, Say. — [Ent. Works, ii. 487.] 



A pair taken in the journey from New York to Cumberland-house. [Rare 

 in Canada.] 



[22] 21. Chl^enius quadricollis, Kirby. — Length of the body six 

 lines. Taken by Dr. Bigsby in Canada. 



Body hairy like the others, black underneath. Head and prothorax 

 bronzed-green ; mandibles piceous ; palpi and three first joints of the anten- 

 nas testaceous; the latter are longer than the thorax, with the 4th joint as 

 long as the 3rd ; prothorax rather square, a little narrower before, with the 

 sides curving, sculptured like the preceding species ; scutellum sub-acumin- 

 ate : elytra blue-black, furrowed with deeper furrows very visibly punctured, 

 interstices minutely punctured. 



[Placed, with a mark of interrogation, as a synonym of 0. Pensylv aniens, 

 Say, in Le Conte's List, p. 11.] 



22. ChljEnius cordicollis, Kirby. — Length of the body 8 lines. Taken 

 in Canada by Dr. Bigsby. 



Body black. Head impunctured; palpi rufous; antennae dusky, with the 

 three first joints rufous, the third much longer than the fourth : prothorax 



