178 THE CANADIAN ENTOMOLOGIST 



Segment 2 — ^A median dorsal black spot, consisting of a 

 narrower anterior part, which is continued cephalad as a narrow 

 line, and a much broader transverse posterior part, connected 

 behind with an apical ring. There is also a black lateral streak, 

 extending the entire length of the segment close to the tergal 

 margin and widened posteriorly 



Segments 3 to 6 — Bronze-black above, with a pale basal 

 ring; the black area occupies the dorsal half of the segment and 

 is more or less widened, especially on seg. 3, near the hind margin, 

 where it is narrowly connected with a black submarginal lateral 

 streak extending the entire length of the segment, widening at 

 point of contact with the black dorsal area. A small pale spot 

 is thus enclosed behind this point of contact. The pale basal 

 ring is of about the same width on segments 3 to 5, narrowing 

 somewhat on seg. 6. 



Segment 7 — -Similar, but the pale basal ring still narrower, a 

 very narrow pale apical ring and the lateral streak not quite 

 meeting the dorsal black area except at the apical black ring. 



Segment 8 — Basal two-thirds to four-fifths black above » 

 apical portion pale, continuous with the pale colour of the sides, 

 in which a long black streak is enclosed. 



Segment 9 — Basal two-thirds of dorsum with a black sub- 

 quadrate spot, sides pale with a blackish patch. 



Segment 10 and appendag-es wholly pale. 



Sternites of segs. 1 and 2 pale, black-margined; all of the 

 other segments, except apical margin of 8, black. Ovipositor pale. 



In one of the females there are 10 postcubitals in each front- 

 wing and 8 in each hind-wing; in the other there are 10 postcubitals 

 in one front-wing, 11 in the other, and 9 in each hind-wing. In 

 both specimens vein M2 arises just before the fifth postcubital in 

 the front-wings and just before the fourth postcubital in the hind- 

 wings. 



Length of body, d^ 28-30 mm., 9 31-33 mm.; abdomen cf 

 22.5-25 mm., 9 25-26 mm.; hind-wing, cf 16.7-17.8 mm., 9 19.5- 

 19.75 mm. The Nipigon male measures about the same as the 

 largest male from Newfoundland, but is distinctly more slender 

 than any of the Newfoundland specimens. A similar difference 



