50 



II The pronotum asperate on the cephalic half, 

 punctured but not granulate behind ; the distal 

 segments of the antennal club completely 

 telescoped, rarely showing from the inner side. 

 J The body very stout; the pronotum sub- 

 circular with the cephalic margin serrate at 

 the middle line in the female, the mes- 

 epimeron strongly widened laterally; the 

 metepisternum only very faintly emarginate 

 behind; the scutellum distinct, not de- 

 dressed (PL 11, figs. 1, 2). 



Anisandrus Ferr. Page 124. 



JJ The body slender, the pronotum not serrate on 

 the cephalic margin; the mesepimeron 

 feebly widened laterally, the sides sub- 

 parallel; the metepisternum rather strongly 

 emarginate on the inner side behind. 



Xyleborus Eichh.* Page 126. 



GG The pronotum feebly declivous and not very strongly 

 asperate in front and somewhat granulate behind; 

 the sides arcuate; the antennal club strongly com- 

 pressed, the sutures arcuate, showing on both sides; 

 the elytral declivity more or less deeply concave. 

 Xylocleptes Ferr. Page 128. 



FF The pronotum feebly convex, subequally in front and 

 behind, not declivous in front, granulate over the entire 

 surface, usually somewhat more strongly in front; the 

 antennal club obliquely truncate at the tip on the 

 outer side, thickened basally; the declivity convex or 

 somewhat flattened, never more than feebly granulate. 

 Bark borers (PL 11, figs. 4, 5). 



Dryocoetes Eichh. Page 128. 



EE The antennal funicle 4-segmented, the club compressed, with 

 arcuate sutures on the outer and inner sides (PL 9, 

 fig. 23, 28); the pronotum rather feebly declivous and 

 asperate in front, punctured behind, arcuate on the sides. 



Lymantor Lov. Page 133. 



THE ECCOPTOGASTERIN^. 



The Genus Eccoptogaster Herbst 



Die Kafer, 5: 124, 1793. 



Scolytus Geoff. 



Hist. Ins. Envir. Paris, 1: 309, 1762 (description inadequate). 



The status of the names Scolytus Geoffroy, 1762, and Eccoptog aster Herbst, 

 1793, depends upon the acceptance or rejection of Geoffrey's description of 

 Scolytus. Geoffrey's description seems entirely inadequate; he is not binomial, 

 although binary, and he does not designate any species definitely as included 

 in this genus Scolytus except by reference to an unnamed figure and by the local 



* Reitter, 1913, has erected the genus Xyleborinus, with the type saxesceni Ratz. This genus is separ- 

 ated from Xyleborus by the indistinct, oblique, depressed and carinate scutellum. It is included in Xyle- 

 borus by Hopkins as his Division I in which he has described six new species. There are no Canadian 

 representatives known. 



