THE CANADIAN ENTOMOLOGIST 367 



4 cf' s 2 9 's, (Huntsman); near Lonely Lake, Vane. Is., July 19, 

 1913, 6 c^'s 2 9's, (Walker and Kurata) ; Ainsworth, B.C., July 

 11, 1903, 1 &, (R. P. Currie, U.S.N.M.); Bumping Lake, Wash., 

 July 10-11, 1911, 37 c^'s 12 9 's, incl. 7 prs. in cop. (C. H. Kennedy, 

 U.S.N.M.); Big Meadows, Or., July 7-8, 1913, 6 cf' s, (Kennedy); 

 Snake River, Yellowstone National Park, Aug. 14, 1896, 1 cf, 

 (Currie, U.S.N.M.); "Mountains, S. W. Colorado," Aug. 15- 

 Sept. 6, 3 cf's 1 9 (Lieut. Carpenter, coll. Calvert, 1 cf coll. 

 Walker). 



Somatochlora incurvata, n. sp. 



Male.- — Occiput, frontal vesicle and upper part of frons 

 metallic blue-black; sides of frons and lower margin ochreous to 

 brownish yellow; postclypeus black in middle, lateral lobes casta- 

 neous; labrum black; anteclypeus and labium pale yellow; pile 

 moderately dense, blackish on metallic areas, elsewhere pale 

 brownish. 



Prothorax dark greyish-brown, anterior lobe broadly edged 

 with whitish, posterior lobe brownish ochreous. Meso- and 

 metathorax metallic blue to violet, sometimes with greenish re- 

 flexions, with the following parts reddish brown; antealar sinus, 

 inferior half of mesepisternum, an area along bases of wings extend- 

 ing as a stripe down the mesepimerum, an obscure, ill-defined area 

 enclosing the metastigma and a large spot on the metepisternum, 

 which is angular above when well defined. The mesepimeral and 

 metepimeral spots are generally lighter than the other brown areas. 

 Fore coxae black in front, reddish brown behind, this colour ex- 

 tending over most of the outer surface of the fore femora. Pile 

 of thorax rather thin, especially on the sides, pale brown. 



Wings hyaline, the faint yellow tinge deepening in the anal 

 triangles; pterostigmata castaneous, not very dark; costal veins 

 dark brown, edged with dull ochreous toward the base; mem- 

 branule dull dark brown, paler in basal third. 



Abdomen slender, elongate, expanding from the constriction 

 at seg. 3 to the distal end of seg. 5, narrowing gradually on 6, 

 more rapidly on 7 and 8. Pile pale brownish, scanty. Genital 

 lobes rather small, rounded angulate, incurved. 



Colour greenish black, moderately shining. Segments 1,^2 

 and base of 3 castaneous, somewhat lighter on the sides and dorsal 



