THE CANADIAN ENTOMOLOGIST. 59 



in lumber piles about sawmills. They recall, in appearance, the Cara- 

 bidie, without very closely resembling any of that family with which I 

 am acquainted, though suggesting Cymindis or Hclluoinorpka. The 

 table following is that of Dr. Horn. I have used the name americanus, 

 though in the Henshaw Supplement it is changed lo planus, Oliv., while 

 Dr. John Hamilton, in Trans. Am. Ento. Soc, XXL, p. 401, replaces it 

 by deJ>ressHS, Linn. Rather than get our students tangled up with so 

 much shifting, I have adhered to Kirby's designation, ainericaims, by 

 which it has hitherto gone, and which will enable it to be readily placed 

 when the synonymy is finally set at rest. 

 A. Base of thorax constricted, forming a collar. Median line of pro- 

 thorax broad and deep. Brownish, with paler elytra, no metallic 



lustre. -65 in siridiis, Lee. 



AA. Base of thorax not constricted, sides arcuate from front to hind 

 angles. Median line fine, 

 b. Colour, when mature, black, shining. Legs black or brown. 

 No metallic lustre. 

 Prosternum in front and gula not punctate. .^<\-.^6 



in niger, Kirby. 



bb. Colour piceous or castaneous, varying occasionally to rufous, 

 with violet or bluish surface lustre. Legs, antennje and 

 under side reddish-yellow. Prosternum more or less punc- 

 tured, gula transversely wrinkled. .45-. 60 in. 

 (fig. 18) americanus, Kirby. 



Priognathus, Lee. 

 While agreeing with Pytho in having the third antennal joint much 

 longer than the fourth, P. monilicornis, Rand., is in form much more 

 like Lecontia, but is more convex. A specimen in my collection answers 

 to the following description : Piceous, shining, head nar- 

 rower than the prothorax, distinctly punctured, the punc- 

 tures larger and better separated on the median area. 

 Between the antennae is a deep transverse impression. 

 Eyes small, rounded, prominent, sides of head behind them 

 slightly and regularly convergent. Antennal club gradually 

 formed. Prothorax widest about the middle, broader than 

 the head, sides rounded, strongly and regularly sinuate near 

 „ ^ the base ; punctuation rather coarse, the punctures well 



Fig. 18. - ' ^ 



separated, not crowded, disk with a large, vague impression 



