,THE CANADIAN ENTOMOLOGIST. 191 



annulate, elytra sharply obliquely truncate at tip. .40-.60 

 in Jiigrella, Say. 



16. Antennae annulated (except in $ of cajiadensis) 17. 



Antennae not annulated 19. 



17. Elytra parallel, elongate, truncate at tip, front of head with transverse 



impression. Colour black, punctuation fine and dense. Legs 



reddish or brownish. .40 in pedalis^ Lee 



Elytra narrowed from the base 18. 



18. Tips of elytra deeply truncato-emarginate, antennae serrate in the $. 



Punctuation very coarse and close, sub-confluent. Black, elytra 

 usually with large red basal spot, which may extend (in the var. 

 erythroptera) over the entire surface. .48-76 in. .canadensis, Oliv. 



Tips of elytra truncate or feebly emarginate, body of ordinary form, 

 not very stout; punctuation of elytra finer, well separated. Black, 

 elytra reddish, abdomen red $ or black ? rubi'ica, Say. 



Tips of elytra nearly rounded, very dehiscent. Form very short and 

 stout, head broad, elytra coarsely punctured. Black, elytra often 

 with reddish or yellowish submarginal stripe or entirely testaceous. 

 .36-.48 in vagans, Oliv. 



19. Body densely golden pubescent. Blackish, elytra testaceous, often 



darker at sides. .48-56 in chrysocoma, Kby. 



Body only moderately or sparsely pubescent 20. 



20. Black, elytra reddish or testaceous, wholly or for the greater part. 21 . 

 Black, elytra black, each with four yellowish spots, thighs pale at 



base. .40-.48 in octonotata, Say. 



21. Elytral margin very deeply sinuate (on viewing the insect from the 



side). Prothorax with a tolerably well-marked median channel, at 

 bottom of which is an abbreviated raised line. Black, elytra 

 reddish except at tip, which is rather broadly obliquely marked 



with a black blotch and truncate. -5 2-. 7 5 in proxima, Say. 



Elytral margin not deeply sinuate 22'. 



22. Larger, prothorax with very distinct median channel which is wider 



behind. Brownish red, elytra paler, with a submarginal dark spot 

 near the middle, tip obliquely truncate. .48-52 in. .biforis, Newm. 

 Smaller, prothorax without median channel. Black, elytra red- 

 dish to "testaceous, tip blackish, squarely truncate. ,40-, 48 

 in , sanguinea, Lee. 



23. Prothorax hardly narrowed anteriorly and not constricted behind. 



Seventh and following antennal joints with a raised line beneath. 



