NORTH AMERICAN ODONATA. 247 



Face brown and green. Frons above with a black T-spot. Thorax brown ; an 

 HUtehuiueral stripe wider above, two bands on the sides, and inter-alar spots- 

 green. Abdomen dark brown marked with blue or green spots and lines. Wings 

 smoky or yellowish to a varying extent, extreme apex sometimes darker. Pter- 

 ostigma orange to reddish brown. Membranule white. App. as long as, or 

 longer than 9 -|- 10. 



% . Rear of head simple. 10 with a mid-dorsal tooth. Sup. app. with apical 

 two-thirds wider, an inferior tubercle near base, apical half with a superior, 

 longitudinal carina and the inner edge hairy, apex truncated. Inf. app. one- 

 half shorter, oblong, apex notched. 



9. Rear of head produced on either side of the occiput in an obtuse angle, 

 which projects beyond the latter. 10 with a ventral, plate-like denticulated 

 projection. App. oblanceolate. 



Abd. % 61-71, 9 64-72. H. w. % 53-60, 9 58-62.5. 



Fairly common around Phila., May to September. 

 Quebec to Mexico, west to the Mississippi. 



18. Foiiscolonibia Selys. 



Selys, Bull. Ac. Belg. (3) v, p. 736, 1883. Karsch, Ent. Nach. xvii, p. 289, 1891. 

 33. Fouscoloinbia viuosa Say. 



Aeshna v. Say, Jour. Ac. Phila., viii, p. 13, 1839. Ae. quadriguttata Burra. 

 Hagen. Syn. Neur. N. A., p. 130, 1861. 



Face greenish or brownish, lips yellow. Frons above with a brown spot. 

 Thorax brown, an indistinct pale green, antehumeral stripe, sides with two round 

 blight yellow spots. Abdomen constricted at 3, spotted with yellow. Wings with 

 reddish veins, a small basal reddish brown or smoky spot, tips sometimes clouded. 

 Pterostigma yellow, 4-5.5 mm. long. Triangle of 4-6 cells; at least one basal 

 subcostal cross-vein. 



1 . Sup. app. as long as 9 + 10, wider in apical two-thirds, apex hardly acute, 

 a small inferior tooth near base. Inf. app. one-third as long, triangular, apex 

 notched. 



9 . A small brown spot at nodus. 



Abd. I 44-51, 9 48.5-50. H. w. % 40-42, 9 41-44. 



One male, Phila., Aug. 26 ; one female, Mt. Holly, N. J., July 

 4, S. F. Aaron (A. E. S.). One male, Fairmount Park, Aug. 29, 

 1891, P. Nell. One female, Clementon, N. J., S. F. Gross (C). 



Canada; Eastern United States; Fort Townson, Arkansas (Uhler's 



coll.). 



19. Gonipliieschua Selys. 



Selys, Trans. Ent. Soc. Lond., 1871, p. 413. Karsch, Ent. Nach. xv, p. 238, 1889. 

 33. Gompliieschiia t'urcillata Say, var autilope Hagen. 



G. a. Hagen, Proc. Bost. Soc. N. H.. xvi, p. 354, 1874. 



Face yellowish brown. Frons above with a black T-spot. Thorax brown, an 

 antehumeral green stripe; sides yellowish or brown, two median oblique black 

 bands confluent above and below the metastigma. Abdomen dark brown, marked 

 with blue or green spots. Pterostigma yellow to blackish brown. 



TEANS. AM. ENT. SOC. XX. SEPTEMBER, 1893. 



