278 APPENDIX. 



tra paler than the head and thorax ; striate ; striae punc- 

 tured •,fe(!.t rufous ; the claw at tip of the anterior tibia is 

 dilated and curved inwards like a hook. 



Length less than one-fourth of an inch. 



An insect remarkable for its short robust stature and the 

 l>roportional length of its thorax, as well as for the dilata- 

 tion and crooked form of the appendages at the extremity 

 of the tibia. 



2. A. clypeatus. Black; elytra testaceous; clypeus, 

 covered with small tubercles. 



Inhabits North-west Territory. 



Head black, convex, covered with very small obtuse tu- 

 bercles ; edge a little elevated, piceous ; tip hardly trun- 

 cated ; thorax with irregular small obtuse rugae ; anterior 

 angles rectangular ; posterior edge regularly arcuated, not 

 dilated in the middle ; elytra rufo-testaceous, dusky at 

 base ; with deep, punctured striae ; interstitial lines con- 

 vex ; thighs dull-yellowish ; posterior ones much dilated. 



Length more than three-twentieths of an inch. 



Readily distinguished by the rough appearance of the 

 clypeus. 



TROX, Fabr. 



T. canaliculalus. Thorax with an entire groove; cly- 

 peal edge not reflected; elytra with alternate series of largo 

 and small elevated bristly dots. 



Inhabits North-west Territory. 



Body blackish-brown; head with numerous irregular 

 discoidal punctures; clypeus obtusely rounded at tip; the 

 edge not reflected; surface flat, excepting two little ele- 

 vated protuberances on the upper part of the front; anten- 

 nae yellow; thorax with a strongly impressed obvious de- 



