AESCHNA. 121 



rliinariura, black ; thorax fuscous, dorsum each side with a nijrrow, 

 short stripe, sometimes almost wanting and the sides with two 

 oblique, broad stripes, yellow ; feet black ; abdomen long, slender, 

 equal, very much narrowed behind the iniiated base ; brownish- 

 black, with blue and yellow spots, segments 3 — 10 with two apical 

 blue spots, 3 — 8 with two triangular spots upon the middle, yellow, 

 apex of the second segment blue ; last segment with the males, 

 having an elevated, obtuse tooth above ; appendages brownish- 

 black, superior ones of the male, long, subrect, foliaceous, the base 

 narrower, a carina inwardly, the base narrower, before the apex 

 acuter, subincurved, inflated ; the inferior appendage almost one- 

 half shorter, elongately -triangular, obtuse ; appendages of the 

 female longer, foliaceous ; wings hyaline, pterostigma narrow, fus- 

 cous ; membranule brownish-ciuereous, the base paler. 16 ante- 

 cubitals ; 1 — 9 postcubitals. 



Length 66 — 15 millim. Alar expanse 92 — 100 millim, Ptero- 

 stigma 4 — 5 millim. 



Hub. Russian America; Kenai Island, Norton Sound. — Europe; 

 Asia ; Siberia ; Kamtschatka ; Ural. 



4. 2B. multicolor! 



Aeschna multicolor Hagen ! 



Fuscous, spotted with blue; head blue (J^) or luteous (9), front 

 with a T spot, each side terminated with yellow, and a baud before 

 the eyes, black ; thorax fuscous, dorsum each side with a stripe, 

 (interrupted or absent in the female), sides, each side with two 

 oblique ones blue (J*) or yellow (9); feet black, femora rufous 

 above, the apex black, anterior femora beneath, luteous; abdomen 

 moderate, slender, cylindrical, narrow behind the inflated base; 

 fuscous, spotted with blue {^) or yellow (9), segments 3 — 10 

 with two large, apical spots, segments 3 — 8 with two triangular 

 spots upon the middle, and a basal, divided spot each side, seg- 

 ment 2 with a medial, interrupted fascia, and a broad apical one, 

 blue or yellow; superior appendages of the male black, long, folia- 

 ceous, narrow, the base narrower, inwardly carinated, straight, 

 curved inwardly before the apex, an elevated, triangular lamina 

 above, and a longer tooth placed more inferiorly, the apical tip 

 acute, curved downwards; the inferior appendage, pale fuscous, 

 one half shorter, elongately triangular; appendages of the female 

 moderate, fuscous, foliaceous, broader; wings hyaline, those of the 



