No. 39] ODONATA OF CONNECTICUT: LIBELLULIDAE 281 



Described from an immature nymph received from Dr. Howe 

 labeled "Saskatchewan." 



Adult, male. — Color dark brown to black. 



Head : labium entirely black in specimens examined from 

 Massachusetts. 



Thorax : black ; dark spot at base of hind wings not reaching 

 the triangle; stigma with both ends, and sometimes the caudal 

 margin, white or pale. 



Abdomen: uniform brown or black, without pale spots on terga 

 4-10; terga 2-4 pollinose on dorsum; inferior appendage slender 

 at tip. slightly bent ; segment 2 in the hind third and on the side, 

 3 to the transverse carina yellowish brown (obscured in older 

 specimens). 



Female. — Terga 4-5 with small brown dorsal spots about half 

 the length of the segments ; 6-7 with a yellow streak on basal half 

 of the dorsal carina ; vulvar lamina consisting of two triangular 

 plates a little more than half the length of the ninth sternum; the 

 plates almost in contact on the meson. 



Measurements : total length, male 28-32, female 30 mm. ; length 

 of abdomen, male 18-21, female 20 mm.; length of hind wings, 

 male 21-24, female 22-23 rnm. ; width of hind wings, male 7-7.5, 

 female 7-7.5 mm. 



Specimens from Webster Lake, Massachusetts, collected by 

 S. W. Bromley, and from Long Island by William T. Davis have 

 also been examined. 



Connecticut. — New London, 8-22 June, 1921 (R. H. H.) ; Litchfield, 4 

 July, 1915 (L. B. W.). 



New England.— June 8-August 18. 



Leucorrhinia glacialis Hagen 



Transactions of the American Entomological Society, 17: 234: 1890. 



Adult, male. — Color black and reddish brown. 



Head : labium black, clypeus and front white, except the pre- 

 ocellar black stripe extending on each side nearly to the fronto- 

 clypeal suture ; ocellar area black ; vertex, occiput and postgenae 

 black. 



Thorax : mostly reddish brown marked with obscure black on 

 the sides ; venter black ; legs black ; wings clear, with a small 

 brown triangle at the base of the hind wings and a trace of the 

 same color at the base of the front wings. 



Abdomen : segments i and 2, and 3 reddish brown, the reddish 

 area on 3 extending slightly beyond the transverse carina on the 

 dorso-meson ; remainder of abdomen black ; anal appendages 

 black, the superiors in lateral view, with acute tips, and about 6 

 small, equally spaced teeth on the ventral surface from near base 

 two-thirds the length of each superior a])pendage ; su])erior a little 

 wider at base than at apex, the distal margin concave and some- 

 what angular; hamules without conspicuous anterior hook. 



