THE CANADIAN ENTOMOLOGIST. 



27 



colour it is very dark brown, the body is densely and deeply punc- 

 tured, and the sides of the prothorax are irregular, with six teeth. 

 Length, .14 to .20 in. 



Catogenus, Westw. 



Represented by C. rii/us, Fabr., a flat, chestnut-coloured insect, 

 often taken under bark, and varying in size from a little over .15 to 

 above .50 in. The prothorax is narrowed behind, distinctly punctured, 

 but with a smooth median line. The elytra are deeply striate. 



Pediacus, Shuck. 



These are rather small, ferruginous or brownish insects of depresssed 

 form, broader than most Silvanini, which they resemble somewhat in 

 the antennae being terminated by a three-jointed club. They are thus 

 differentiated : — 



Surface opaque, lateral thoracic margin feebly undulated (.12-16 in.) 



fuscus, Er. 



Surface somewhat shining, lateral thoracic margin feebly serrulate 

 (.12-175 in.) deprcssus, Hbst. 



Cucujus, Fabr. 

 A very striking insect on account of its colour is 

 C. clavipes, Fabr. (Fig. 2.) The entire upper surface is 

 scarlet, except the eyes and antennte. The head is 

 broad behind the eyes, the posterior angles being pro- 

 duced outward and backward, and rounded at tips. 

 The thorax and elytra are very flat, the former having 

 the disk impressed. Tibiae and tarsi, dark. Length, 

 .40 to .50 in. The form known as pwiiceiis, Mann., is 

 found in British Columbia, and may be known by the 

 first antennal joint being usually testaceous instead of 

 black, the more elongate body and narrower neck. 



L^MOPHL(KUS, Lap. 



Small, usually flattened, but sometimes moderately convex insects 

 occurring commonly under bark. They are, as a rule, more flattened 

 and often much broader proportionally than the Silvanini, the antennae 

 frequently elongate, especially in the males. The females, besides 

 having shorter antenna^, have often a narrower head and thorax. 

 The following table will enable the recorded species to be recognized: 



