152 THE CANADIAN ENTOMOLOGIST. 



cc. Elytra truncate at tip. Smaller species with long legs and 

 whitish elytral bands. 



Thorax wider than long. .28-40 '\\\.?nuricatulus, Kirby. 



Thorax longer than wide. .36-.44 in. .longipes, Kirby. 



P. erythrocepJialus is known to depredate on elm, soft maple, 



hickory and black locust ; P. caprcea on ash, elm and hickory, while P- 



niuricatulus and P. longipes may be taken on freshly cut pine. 



Clvtanthus, Thorns. 



C. rurico/a, Oliv., is black, base of femora, the tibiae, tarsi and 

 antennae (except at tip) reddish. Pubescence yellow, forming a nearly 

 complete thoracic margin, a scutellar spot and elytral markings as 

 follows : A short oblique band near the base, posterior to which is a 

 hook-like (sometimes interrupted) figure the shaft of which is nearly 

 parallel with the suture, and behind this a rather broad, nearly straight 

 but oblique band. Beneath, the meso- and metathorax are spotted and 

 the apices of the abdominal segments more or less margined with the 

 same colour. Length, .28-. 48 inch. 



EuDERCES, Lee. 



Contains two small (Canadian) species which agree in their ant-like 

 form, the elytra gibbous at base and with an oblique irory fascia. The 

 colour varies from black to almost entirely rufous, the tip of the elytra, 

 however, remaining black in the latter case. Mr. Leng separates them 

 by the following characters : — 



Eyes nearly divided ; prothorax uniformly rounded at sides. .20-36 



in picipes, Fabr. 



Eyes completely divided ; prothorax distinctly depressed each 

 side near the anterior margin, laterally subangulate. .26-. 36 



in pmi, Oliv. 



In my experience, E. picipes may be taken by beating hazel bushes. 

 When running up the side of the beating-net the resemblance to certain 

 black species <S Formica (which are often abundant in the same thickets) 

 is truly striking. It has been bred from chestnut twigs. 



Cyrtophorus, Lee. 



Until recently but one species has been recognized. Captain Casey 

 has of late described another form which he distinguishes from verrucosus 

 as follows : — 



