58 



with three pairs of elongate recurved rugosites in a longitudinal row on the 

 middle of each side in front, the first pair on the front margin. 



The elytra as wide as the pronotum, slightly less than one half longer 

 than wide, the basal margin very strongly elevated, recurved and coarsely 

 serrate in the scutellar region; the sides subparallel on the basal half, broadly 

 rounded behind; the striae distinctlj^ rather strongly impressed, the strial 

 punctures rather coarse, not close, deep and distinct, bearing very minute 

 setffi; the interspaces feebly convex, minutely punctured and with a median 

 roAV of granules, bearing very small elongate scales which hardly cover the 

 surface, and a median row of longer, erect, very stout bristles; the pubes- 

 cence brown, with numerous scattered white scales, more abundant towards 

 the base and forming a narrow band along the suture; the first two 

 abdominal sternites subequal in length, each longer than the next two united. 



Salmon Arm, B.C.; apple trees, in dying bark. First examined in 

 company with Prof. W. H. Brittain. 



Pseudocryphalus criddlei Sw.; loc. cit., Bull. 14: 20, 1917. 



This species is very closely allied to hrittaini; with the same size, form, 

 and colour; but it is apparently distinct through the very feebly impressed 

 elytral striae, and the small, very closely placed strial punctures. 



We have very few examples of hrittaini and a longer series may show 

 intergradations with this species. 



Described from a series of 108 specimens from Aweme, Man., Prunus 

 virginiana; collected by Mr. Norman Griddle. 



The Genus Chramesus Leconte. 



Am. Ent. Soc. Trans., 2: 168, 1868. 



Rhopalopleurus Ghap. 



Syn. Scol., 46, 1869. 



Chramesus icoriae Lee, Am. Ent. Soc. Trans., 2: 168, 1868: lecontei Ghap.; 

 Syn. Scol. 255, 1873. 



Black, length, 1-5 to 1-7 mm. ; the front of the female flat, that of the 

 male deeply concave. 



This is the only Canadian species of the genus discovered thus far, 

 and cannot be confused with any other species of our fauna. Leconte 

 described Chapuisii from Louisiana, and Schaeffer has described three 

 species, asperatus, dentatus, and suhopacus, from Arizona. (PI. 9, figs. 28, 28a). 



Host tree. — Hickory. 



Distribution. — Eastern Canada and Eastern United States. 



The Genus Plithorophloeus Rey. 

 Revue d'Ent., 2: 128, 1883. 



The North American species heretofore included in Phloeotrihus Latr. have 

 been referred recently to Phloeophthorus Woll. 



The species included under these three generic names form a series pre- 

 senting a remarkable gradation of characters, and they will probably be included 

 eventually under one genus. The chief characters presented by the three groups 

 are as follows: — 



