24 



impressed, strial punctures moderate, interstrial punctures smaller, uniseriate, 

 punctures distinct on the sides; declivity flattened, moderately opaque, the 

 punctures shining, the suture wide and slightly elevated, with about three 

 widely separated small acute granules, the second interspace flat, hardly im- 

 pressed, with small granules above the face of the declivity; the third interspace 

 slightly elevated and granulate as on the first. 



Host trees: Probably various hardwood species. 



Distribution : New York state from Buffalo to New York City, New Jersey, 

 Wisconsin, Washington, D.C., North Carolina, Virginia, Missouri. Not known 

 to occur in Canada. 



Xyleborus inermis Eichh. is very closely allied to and possibly identical 

 with xylographus Say. The lateral interspaces of inermis are described by 

 Eichhoff as "sparsely, lightly, punctured.'' 



Xyleborus affinis Eichh. has the pronotum very lightly and sparingly 

 punctured behind, and is apparently distinct thereby. I have not recognized 

 either inermis or affinis from Canada or the Northern States. 



Xyleborus canadensis, n. sp. 



Length, 2 6 mm. ; moderately stout, differs from xylographus chiefly in the 

 distinctly stouter form, the sides of the elytra parallel far beyond the middle, 

 hardly narrowed before the declivity, rather broadly rounded behind, broadly 

 flattened on the declivity, the striae only very faintly impressed. 



Host tree: Quercus. 



Distribution. Isle Perrot, Que., 29-VIII-1910. Apparently very rare. 



Pityophthorus canadensis, n. sp. 



This species is very closely allied to cariniceps Lee. and differs chiefly in 

 characters of the female front and declivity of both sexes. The length is 2-5 

 mm. 



Description of the female. The head has the front with a large subcircular 

 median area convex, impressed about the margins, minutely and densely 

 punctured and densely finely pubescent, most densely on an elongate oval area 

 on each side of the median line which is less densely punctured and pubescent 

 particularly on the epistoma; the pubescence reddish yellow and longest on 

 the middle part of the oval area; the remainder of the front, including the 

 narrow band between the central pubescent area and the eyes, sparsely, moder- 

 ately punctured and shining; the antennal club longer than the funicle, nearly 

 as wide as long, with the sutures broadly, strongly arcuate and bisinuate on 

 the outer face, the second and third more strongly, the sutures fringed with stiff 

 hairs, the margin of the club with a few long erect hairs. 



The pronotum is but little longer than wide, with the sides nearly parallel 

 on the hinder half, strongly narrowed on the anterior half and rather narrowly 

 rounded in front; the front margin finely serrate; coarsely and rather sparsely 

 asperate on the cephalic third, more finely and densely towards the summit; 

 transversely impressed immediately behind the summit so that the latter is 

 subcarinate; moderately, deeply, not closely punctured and shining on the 

 caudal half; the median line and a small area on the middle of each side behind 

 the middle impunctate; finely acutely margined immediately in front of the 

 caudal border. 



The elytra are slightly narrower than the pronotum with the sides faintly 

 arcuate, nearly parallel, a little narrowed on the caudal fourth and very broadly 

 rounded behind as seen from above; the striae hardly impressed except the 

 sutural striae which are faintly indicated; the strial punctures moderate, deep, 

 in not very regular rows, less regular near the suture and near the lateral 



