THE CANADIAN ENTOMOLOGIST 207 



2. Last ventral segment with apical portion narroived to form a 



process about tiuice as long as wide and not more than one-third 

 as wide as ivider portion of segment; clypeus without basal 

 depression, transverse depression on segment 2 uninterrupted, 

 segment 1 well clothed with long hair, abdomen short and 

 wide, comparatively finely and closely punctured, no longi- 

 tudinal carina on frons ribis Ckll. 



[C. ribis kincaidii Ckll. (Olympia, Wash.), runs here. It is 

 larger than typical ribis, and has tawny hair on head and 

 thorax. It will doubtless be found in B. C. — T. D. A. C] 



Last ventral segment ivith sides convex, tapering to blunt point 

 with a fringe of fuscous hair, clypeus with a depression on 

 each side of its upper margin, transverse depression on seg- 

 ment 2 widely interrupted in middle; segment 1 scantily 

 clothed, hair very short and adpressed; abdomen elongate; 

 segments 2 to 4 coarsely and remotely punctured; frons 

 with Y-shaped carina with the central ocellus between its 

 forks alternata Say. 



3. Legs more or less red 4. 



Legs not red; depressions on segments 2 and 3 always shallow, 



especially towards middle, where they are widely interrupted 

 on segment 3; segments 1 to 5 more evenly and finely 

 punctured 6. 



4. Segment 6 1% times as long as ivide, slightly rounded at apex; 



depression on segments 2 and 3 narrow, deep and rugose, 

 punctures on segments 1 to 5 large and close, an impunc- 

 tate line immediately behind depressions on segments 2 and 

 3 and behind their vestiges on segments 4 and 5 5. 



Segment 6 lyi times as long as wide, pointed at apex . . Cosl. 11. 



(C deplanata, which occurs in Washington State, would come 

 in about here, but it has the 6th dorsal segment obtuse at 

 apex — on looking at other specimens it seems variable and 

 may be fairly pointed. The 6th segment is quite broad in 

 deplanata seen from above, its width is about three-quarters 

 its length.— T. D. A. C.) 



5. Sixth dorsal segment strongly angulated at sides so that its apical 



half is narrowed; larger insect; length up to 



12 mm rufitarsns Sm. 



