Casey — Observations on the Staphyliniclae. 309 



From riyobates, which has a somewhat similar abdomen, it 

 differs ia its more slender and acutely aciculate mesosternal 

 process and pointed antennae. Assuming Callicerus ohsciirus 

 Grav., to be the type of Callicerus, there can be no doubt of 

 its four-jointed anterior tarsi and that its proper place is 

 among the M^yrmedoniini, where it is wholly isolated by its 

 remarkable antennae. Besides the type of Gennadota, a 

 second species has recently been discovered, which may be 

 briefly described as follows : — 



Stout, paral'el, convex, polished, not micro-retlculate except very ob.-o- 

 letely on the elytra, the abdomen extremely flaely but obsoletely 

 strigilate iu wavy transverse lines, castaneous, the head rather more 

 piceous and the elytra pale brownish- rufous throughout; legs pale, the 

 antennae fuscous, with the first joint testaceous; pubescence ralher 

 long, coarse, moderately sparse and distinct; head fuMy as long as 

 wide, parallel, abruptly and obliquely constricted at base, flaely and 

 sparsely punctate, the eyes slightly prominent; antennae not quite at- 

 taining the middle of the elytra, moderately thick, but little enlarged 

 distally beyond the fifth joint, the subapical joints slightly wider than 

 long, the eleventh ogivally pointed, as long as the two preceding com- 

 bined; prothorax about two-fifths wider than long and two-fifths wider 

 than the head, the sides subparallel and broadly, evenly arcuate 

 throughout, more converging apically, the apex very distinctly nar- 

 rower than the base; surface finely, rather sparsely punctate and evenly 

 convex, except a small transverse ante-scutellar impression; elytra 

 large, nearly a third wider and one-half longer than the prothorax, 

 strongly impressed on the suture behind the scutellura, very distinctly, 

 somewhat closely and asperulately punctured; abdomen parallel, evi- 

 dently narrower than the elytra, finely, sparsely punctate, the four sub- 

 equal strong basal impressions rather coarsely but not more densely 

 punctate. Length 3.8 mm.; width 1.0 ram. Canada. 



canadensis n. sp. 



This species differs conspicuously from puherula in its 

 more transverse, more finely and sparsely punctate prothorax, 

 not narrowed toward base and not broadly impressed on the 

 median line behind the middle and also in its smaller head, 

 among other characters. The European species previously 

 referred to by me as Callicerus rigidicornis, will form a new 

 genus allied to Ilyohates. 



Phloeopora Er. 



Form stouter, parallel, somewhat depressed, piceous-black, the elytra rufous 

 behind basal third at the suture, to apical third at the sides; legs pale 



