TRIBE VI. PHLCEOTRIBINI. 655 



upon a determination by Hopkins, the only instance of its occurrence 

 except on the North Pacific Coast. The second was described by Kirby 

 from Lat. 65, has been erroneously identified since by several authors, 

 and was known by Hopkiiis only from a small number of Lake Superior 

 and Hudson Bay specimens. Both are therefore so unlikely to occur in 

 most of our territory that it seems better to add descriptions but omit 

 from the key. 



1059 (- ). DENDROCTONUS BOREALIS Hopk., 1909-a, 133. 



"Nearly black, elytra more or less reddish. Head with front convex, 

 with faint anterior and posterior impressions and faint anterior line. 

 Punctures of pronotum distinctly irregular, posterior half of pro-episternal 

 area not punctured; punctures of pronotum and elytra moderately coarse. 

 Blytral strise scarcely impressed except in dorsal area, those of declivity 

 not deeply impressed. Interspaces scarcely coarser and but faintly ru- 

 gose, except toward base and vertex." Length 6 mm. "The short, stouter 

 form, short and broad pronotum, with the punctures more uniform in size, 

 punctures of dorsal stria? of elytra finer and less distinct, distinguish this 

 from allied species." (Hopkins.) Length 6 mm. 



Alaska and Labrador. 



1060 (- -). DENDROCTONUS RUFIPENNIS Kirby, 1837, No. 261, 195. 

 Elytra red, thorax, head and abdomen reddish-brown. Head convex, 



with faint anterior and posterior impression and short anterior line, 

 punctures of the posterior part of pro-episternal area, the more distinctly red 

 terior half of pro-episternal area punctured. Strias of elytral declivity not 

 deeply impressed and with fine punctures; elytral strise scarcely im- 

 pressed except toward suture; strial punctures moderately coarse; inter- 

 spaces with rugosities moderately coarse, sparse and acute. The coarse 

 punctures of the posterior part of pro-episternal area, the more distinctly red 

 elytra, the bright red hairs and the much less distinctly impressed elytra] 

 strise of the lateral area, are distinctive characters. Length 6.2 6.7 mm. 



Lat. 65, Hudson Bay territory; White Fish Point, Lake Su- 

 perior; Grand Island, Mich. 



Tribe VI. PHLCEOTRIBINI. 



Body stout; head exposed or rarely concealed from above; an- 

 tennal club subglobose, compressed to laminate, never conical 

 (Fig. 136, D) ; pronotum always broader than long, with anterior 

 dorsal area commonly smooth ; tarsi with third joint simple or 

 bilobed. 



KEY TO GENERA OF PHLCEOTRIBINI. 



a. Club of antennse lamellate. (Fig. 137, I.) I. PHLCEOPHTHORUS. 



aa. Club of antennae globose, 

 ft. Anterior coxaa separated. 



c. Antennal club with suture. II. PHLCEOSINUS. 

 cc. Antennal club solid. (Fig. 137, F.) III. CHRAMESUS. 



6&. Anterior coxse contiguous. 



d. Eyes kidney-shaped. IV. CARPHOBORUS. 

 dd. Eyes divided. V. POLYGRAPHUS. 



