25 



margins; the interstrial punctures as large as those of the striae, sparsely and 

 not very regularly placed, more numerous on the first two interspaces and on 

 the sides, the sutural interspace with the punctures smaller behind and disappear- 

 ing on the declivity, confused near the lateral margins; the declivity retuse. 

 the sutural interspace fine, slightly elevated; the sutural area strongly sulcate, 

 smooth and shining, widened near the apex; the prominence with a row of 

 small acute teeth on the third interspace along the mesal margin of the summit, 

 the teeth becoming sparse and a little coarser towards the apex; with a few 

 very minute granules on the outer margin of the caudal half of the declivity; 

 the disc of the elytra nearly glabrous with a few hairs on the sides, becoming 

 longer behind, and longer, sparser and stiff on the declivity. 



The male has the front flattened on a large subcircular area, roughly 

 punctured, with a strongly elevated, acute median carina, highest and abruptly 

 terminated on the epistoma. The declivity has the row of small teeth on the 

 third interspace nearly obsolete, Avith the retuse lateral elevations ending nearly 

 half way down the declivity in a distinct but broad and very blunt prominence, 

 behind which the smooth sulcus is abruptly strongly widened. This blunt tooth 

 is directed meso-caudad; it is in the same position as the declivital tooth of 

 cariniceps, but is not elongate and only slightly overhangs the sulcus, not attain- 

 ing the suture. 



This species is abundant in twigs of Pinus in Ontario and Quebec. We 

 have specimens from Marquette, Mich., and from Buffalo, N.Y. It probably 

 extends throughout the northern section of the Eastern States. 



Pityophthorus nitidus, n. sp. 



Description of female. — The length, 2- 1mm.; 2| times as long as the 

 width; the elytral striae not impressed, the strial punctures small; the declivity 

 sulcato-retuse, not acuminate. 



The head has the front flattened, the flat area bounded by a semicircular 

 line behind, very densely, minutely punctured and densely pubescent with short 

 yellow hairs; the median carina nearly obsolete except the cephalic end which 

 forms a rather prominent carinate tooth on the epistoma ; the eyes rather finelj^ 

 granulate, deeply narrowly emarginate; the antennal club very wide, short oval, 

 almost subcircular, the sutures broadly arcuate, the third most strongly, the 

 first two segments each distinctly shorter than either of the last two, rather 

 closely pubescent. 



The pronotum is as long as wide; very broadly rounded behind, strongly 

 arcuate on the sides behind, moderately constricted before the middle, broadly 

 rounded on the front margin, which is finely serrate, the asperities slightly 

 stronger at the middle; the summit slightly in front of the middle, with a wide 

 transverse impression across the disc immediately behind the summit; finely 

 subconcentrically asperate in front, rather coarsely, very densely, subgranulately 

 punctured behind, the punctures smaller towards the lateral margins; with a 

 small impunctate spot on the middle of the side, and a smooth median space. 



The elytra are slightly less than twice as long as the pronotum, 9:5, faintly 

 narrower than the pronotum; truncate at the base; the sides subparallel for 

 over two-thirds the length then narrowed and rather broadly rounded behind, 

 very faintly sulcato-retuse as viewed from above ; the upper part of the declivity 

 distinctly sulcato-retuse; the sutural strise finely impressed; the remaining striae 

 only very faintly indicated, except near the lateral margins; the last two strongly 

 impressed, especially behind; the strial punctures very small, fairly close and 

 deep, in only moderately regular rows; the interspaces not convex, sparsely 

 uniseriately punctured on the alternate interspaces of the disc, more closely 

 punctured about the base and lateral margins; the ninth interspace moderately 

 convex behind. The declivity is broadly sulcate above, the sulcus wide, not deep, 



