22 NORTHERN ZOOLOGY. 



DESCRIPTION. 

 Body black underneath. Head and prothorax bronzed-copper ; front wrinkled ; mouth and 

 oral organs ferruginous ; antennas rufous, the three first joints clearer than the rest : prothorax rather 

 narrow anteriorly, densely punctured, somewhat hairy ; channelled, with a posterior linear impression 

 on each side : scutellum black, triangular : elytra deep blue, with a shade of violet, furrowed like 

 the other species, with the interstices of the furrows indistinctly and most minutely granulated : legs 

 rufous. 



(21) 4. * Chl^enius &uadricollis. Square-necked Chiasmus. 



C. ( quadricollis J niger, capite thoraceque subquadrato aneo-viridibus ; palpis, antennis basi, pedibusque testaceis ; elytris ccEruleo- 

 nigris. 



Square-necked Chlaenius, black ; head and subquadrate thorax bronzed-green ; palpi, legs, and base of the antennae testa- 

 ceous ; elytra blue-black. 



Length of the body 6 lines. 



Taken by Dr. Bigsby in Canada. 



DESCRIPTION. 



Body hairy like the others, black underneath. Head and prothorax bronzed-green ; mandibles 

 piceous; palpi and three first joints of the antennas testaceous; the latter are longer than the thorax, 

 with the fourth joint as long as the third : prothorax rather square, a little narrower before, with the 

 sides curving, sculptured like the preceding species : scutellum subacuminate : elytra blue-black, 

 furrowed with deeper furrows very visibly punctured, interstices minutely punctured. 



(22) 5. * Chl^nius cordicollis. Heart-neched Chlcenius. 



C. ( cordicollis J niger ; protkorace obcordato ; palpis, pedibus, antennisque basi, rufis ; elytris nigro-virescentibus. 

 Heart-necked Chlaenius, black ; prothorax obcordate; palpi, legs, and antennae at the base rufous ; elytra black with a shade 

 of green. 



Length of the body 8 lines. 



Taken in Canada by Dr. Bigsby. 



DESCRIPTION. 



Body black. Head impunctured ; palpi rufous ; antennas dusky, with the three first joints rufous, 

 the third much longer than the fourth : prothorax obcordate, constricted behind, deeply channelled, 

 disk gibbous on each side of the channel, centre of each gibbosity smooth, remainder of the prothorax 

 punctured ; posterior lateral impression longitudinal : elytra black with a shade of green, sculptured 

 as in the preceding species, but the interstices of the furrows are more visibly punctured : legs 

 testaceous, thighs darker. 



