NORTH AMERICAN ODONATA. 229 



Crum and Ridley Creeks, Del. Co., Pa., and elsewhere near Phila., 

 Aug. 11— Sept. 23. 



Maine to Maryland, west to Wisconsin and Missouri. 



4. Hetieriiia tricolor Burm. 



Calopteryx t. Burmeister, Haudb. Eut. ii, p. 827, 1839. H. t. Selys, Mou. Calopt. 

 p. 136, pi. 12, fig. 5, 1854. 



Blackish brown. Thorax with a humeral and two lateral stripes, pectus, yel- 

 low. Tibiae black. 



% . E.rtreme tips of all the wings brown ; basal sixth of front wings, except on 

 front njargin, bright red, with no adjoining brown ; basal fifth of hind wings 

 brown. Pferostigma black. Sup. app. longer than 10, forcipated, inner edge with 

 a basal tubercle and a median dilatation, whose edge is straight or convex, and 

 which ends abruptly, nearly at right angles. Inf. app. half as long, straight, 

 apices upcurved. 



9 (not seen by the writer). Wings not spotted, base somewhat yellowish. 

 Pterostigma yellow. 



Abd. I 40-42, 9 37. Hind w. % 29-30, 9 31. 



Philadelphia — Hageii (37). 

 Pennsylvania, Georgia, Texas (A. E. S.). 



Subfamily 2. AGEIONIN^. 

 3. L.est.es Leach. 



Leach, Edinb. Eucyc. ix, p. 137, 1815. Amer. Edit, viii, pt. II, p. 726, 1816. 

 Selys, Bull. Ac. Belg. (2) xiii, p. 295, 1862. 



A. % . Inf. app. not longer than half the sup. app. 

 L.estes euriua Say (PI. Ill, fig. 14). 



L. e. Say, Jouru. Ac. Phila. viii, p. 36, 1839. Walsh, Proc. Ac. Phila., 1862, p. 

 .385. Scudder, Psyche vi, p. 66, 1891. 



Dark metallic green ; lips pale green, blue, or yellow; mid-dorsal carina and 

 humeral suture black, sides yellow inferiorly, with a variable blackish spot or 

 band on the second lateral suture. Wings pale yellowish. 



% . Sup. app. on inner side with an acute basal tooth and a truncate median 

 tooth, whose edge is denticulated; apices somewhat thickened. Inf. app. one- 

 third as long, straight, apex blunt, not dilated. 



9 . Mid-dorsal thoracic carina yellow. 



Abd. S 35.5-41, 9 34. Hind w. % 25-29, 9 28. 



Massachusetts (Say, Babcock — A. E. S., C), Illinois (Walsh). 

 Dobb's Ferry, N. Y., July 7, 10, 23, by G. D. W. Williamson (C). 



Lester congener Hageu (PI. Ill, fig. 15). 



L. c. Hagen, Syn. Neur. N. A., p. 67, 1861. Selys, Bull. Ac. Belg. (2) xiii. p. 

 316, 1862. 



Blackish brown; lips, sides of thorax inferiorly, usually a narrow humeral 

 stripe, sometimes rear of head and mid-dorsal carina— yellow. Two oblique 

 black marks behind third coxse ; a black line on second lateral suture. 



% . Sup. app. on inner side with a short, acute, basal tooth, followed by a small, 



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



