236 PHILIP p. CALVERT. 



Small streams around Phila., May 14 — July 14 ; fairly common ; 

 ovipositing June 3, 9. 



Quebec to South Carolina; Ontario, Illinois, South Dakota, Col- 

 orado (Provancher, P'ettit, Truman, Beales). 



8. Enallagina Cbarpentier. 

 Charp. Lib. Eur. p. 21. 1840. Selys. Bull. Ac. Belg. (2) xli, p. 496, 1876. 

 A. % — 2 with black on dorsum restricted to an apical spot, 8-9 blue. 9 — 2 with 

 a dorsal black band for its entire length. 



a. 4-5 antenodal cells. 



16. Enallagina diiriiiii Hageu (PI. Ill, tig. 32). 



Agrion d. Hagen, Syu. Neur. N. A., p. 87, 1861. E. d. Selys, I. c. p. 500, 1876. 



Cuueiform post-ocular spots usually united by a transverse line. Vertex, a 

 broad mid-dorsal (but with the carina blue or yelloiv) thoracic and a humeral 

 stripe, lilack. 



%. Blue with the followiug black: a basal spot on 1. wider than long: a 

 rounded apical spot, with an apical '" tail," on 2; apical part of 3-6, pointed ante- 

 riorly ; 7, except a transverse basal ring; lOdorsally. Sup. app. one-fourth to 

 one-third as long as 10, broad, excavated within, apex truncated obliquely, inferior 

 apical angle with a pale tubercle. Inf. app. a little longer, apex acute, curved in- 

 wards. 



9. Yellowish red. Dorsum of 1-9 with a broad black band widened before 

 the apices, au interrupted trausverse basal yellow ring on 3-7. Dorsum of 10 

 mostly yellowish or green. 



Abd. % 26-32.5, 9 28-33. H. w. % 18-22.5, 9 21-24.5. 



Two $ , Fort Mifflin, Phila., Aug. 31, 1891, by P. P. Calvert (C). 

 Quebec, Rhode Island, New Jersey, Maryland, Virginia, Florida, 

 Louisiana (Provancher, Johnson — A. E. S., C). 



b. 3 antenodal cells. 9 with dorsu7n of 10 b'ack. 



17. Eiiallagma civile Hagen (PI. Ill, fig. 31). 



Agrion c. Hagen, Syn. Neur. N. A., p. 88, 1861. E. c. Selys, Bull. Ac. Belg. (2) 

 xli, p. 514, 1876. 



Cuueiform postocular spots usually connected by a transverse line. Vertex, a 

 broad mid-dorsal thoracic and a humeral stripe, black. 



% . Blue, the following black: a square basal spot on 1 ; a rounded apical spot, 

 with or without an apical " tail," on 2; apical part of 3-6 ; 7, except a transverse 

 l)asal ring; lOdorsally. Sup. app. shorter than 10, compressed, 6road?2/ bifid at 

 apex, upper branch longer, with a pale tubercle between the branches. Inf. app. a 

 little shorter, apex acute, curved upwards. 



9. Green or reddish yellow. Mid-dorsal thoracic carina sometimes green. 

 Dorsum of 1-10 black, widened before apices, 3-7 with an interrupted, trausverse, 

 basal pale ring. 



Abd. % 22-28.5. 9 24.5-30. H. w. % 15-20, 9 18-21. 



Near Phila. May 26-27 (A. E. S. ). Wayne, June 29, and Ridley 

 Twp., Del. Co., Pa., Aug. 31— Sept. 10, by P. P. Calvert (C). In 

 coitu May 26, ,Tune 29, Sept. 7. 



