THE CANADIAN ENTOMOLOGIST. 205 



bb. Colour above not uniform black nor piceous black. Variable, 

 e. Elytra vittate, or spotted, or both. 



Large, margins of head and thorax paler, .26 to .28 



in ieopardus, Horn. 



Smaller, head black, anterior angles or entire sides of 



thorax paler, .18 to .22 in inqtimatiis, Fabr. 



Sides of thorax not paler. 



Smaller (.16 to .20 in.), abdomen h\a.ck.viUafus, Say. 

 Larger (.18 to .24 in.), abdomen 



yellow bicolor, Say, var. 



ee. Elytra not distinctly vittate nor spotted, sometimes fuscous, 

 f. Thorax black or piceous, sides more or less yellow or 

 reddish. 



Elytra bright red, .26 to .34 in .fitnetarius, Linn. 



Elytra of greasy aspect, pubescence well marked, 

 colour almost fuscous, .18 to .26 in . femoralis, Say. 

 Elytra shining, pubescence feeble, deciduous, colour 

 more yellow than fuscous, .22 to 

 .30 in.... prodromus, Brahm. 



ff. Thorax black, sides not yellowish, 



.28 to .30 in rtibripeimis, Horn. 



fff. Ferruginous brown, head and thorax slightly darker, 



.14 to .16 in letitus, Horn. 



Two of the names {A. hyperboreus and A. dentiger) which occur in 

 the Society's List do not appear in the above table. The former is a 

 variety of hamattis, with fainter strias and fiat interspaces, while the 

 reference of a Canadian species to dentiger, otherwise known only from 

 South-western Texas and Arizona, is almost certainly incorrect. 



BoLBOCERAS, Kirby. 



Two species are known in North America, of which only the first is 

 reported from Canada. They may be separated thus : 



Colour uniform brown, shining iazariis, Fabr. 



Colour above yellow, head black, thorax more or less black at base 

 and on disk. Elytra with suture and apex black farctus^ Fabr. 



