TIIK CANADIAN KNTOMOT-OOIST. 35 



Elytra black, wiih a reddish tinge in younger specimens, sides nearly 

 parallel, posterior outer angles rounded. Disc glabrous, sides and caudal 

 depression sparsely hairy. Elytra deeply impressed about the scutellum, 

 punctate-striate, the strioe distinct and deeper at the base ; interspaces also 

 punctate-striate with smaller punctures. On the sides the punctures are 

 less regular and the striae less distinct. At the base the elytra are thickened 

 and roughened by larger punctures. On the slightly depressed caudal 

 sixth the stri?e become confused and the surface is rough, with large, 

 close-set setigerous punctures. 



Mesoepisternum with coarse punctures, from each of which arise two 

 liairs. Mesoepimeron more finely punctate, the punctures also with two 

 hairs. Metasternum coarsely punctate, with single, stout set?e. Meta- 

 episternum more finely punctate, with the central punctures bearing single, 

 long setae, and those near the margin two much finer setae. 



Venter of the abdomen coarsely punctate with slender setae, very 

 strongly excavated caudad of the first sternite. First and second sternites 

 fused ] second sternite nearly perpendicular, about as wide as the first, 

 and bearing from the centre a blunt spine, slender, and pointing obliquely 

 downward in the male, much shorter and conical in the female ; third and 

 fourth sternites each shorter than the second, and smooth on the caudal 

 margins; fifth sternite longer than the third and fourth united, concave 

 and strongly margined behind, more strongly m the male. 



Explanation of Plate 2. 

 Eccoptogaster picecB^ n. sp. 

 —Male. 

 — Antenna. 



— Antennal club. 

 — Mandible. 



— Labium and maxillae from below. 

 — Labium froiu above, 



— Fore leg, tarsus retracted. 



— Fore tibia, inner side, showing the slight ridges. 



— Side view of abdomen, $ . 



— Primary- or egg-tunnel, showing the bases of the larval 



galleries. 

 — Portion of egg-tunnel, showing eggs packed in wood-chips 

 —Egg- 



