S30 
IOWA ACADEMY OF SCIENCE Vol. XXIV, 1917 
NEHALENNIA Selys. 
N. irene Hagen. Ames, June 18, 1901 (Collection) ; Fair- 
port, July, 1915 (Wilson) ; Waterloo, 1906 (Miller) ; Des 
Moines, 1893; Clinton, 1897 (Elrod). A species found low in 
the grass. 
N. posita Hagen. Muscatine, July 8, 1916. Found in same 
conditions as N. irene in low grassy places. 
AMPHIAGRION Selys. 
A. saueium Burmeister. Waterloo, 1906 (Miller). “ Slough 
at north edge of Waterloo,” Miller. 
ENALLAGMA Charpentier. 
E. Hagen i Walsh. Waterloo, 1906 (Miller) ; Des Moines (El- 
rod) ; Fairport, July, 1916 (Wilson). “More numerous than 
any of other 27 species,” Miller. “Fairly abundant, ” Elrod. 
E. ehrium Hagen. Fairport, July, 1916 (Wilson); Des 
Moines, June 29, 1893 (Elrod); Waterloo, 1906 (Miller). 
E. civile Hagen. Ames, June 23, 1892' (Collection) ; Fair- 
port, August 17, 1916 ; Muscatine, August 1, 1916. Found in 
abundance during August. 
E. carunculatum Morse. Fairport, July, 1916 (Wilson). 
E. aspersum Hagen. Fairport, July 2, 1916. 
E. geminatum Rellicott. Fairport, July, 1916 (Wilson). 
E. aniennatum Say. Des Moines, 1898 (Elrod) 1 Fairport, 
July 3, 1916 (Wilson); Waterloo, 1906 (Miller). 
E. signatum, Fairport, August 17, 1916 ; Clinton, June, 1897 
(Elrod) ; Center Lake, Dickinson county, July 13, 1909, and 
Lake Okoboji, June 29, 1909 (Whedon). 
ISCHNURA Charpentier. 
7. veriicalis Say. Muscatine, August 4, 1916 ; Fairport, Au- 
gust 17, 1916; July, 1916 (Wilson) ; Waterloo, 1906 (Miller). 
“One of earliest species out.” Miller. 
ANOMALAGRION Selys. 
A. Jiasiatum Say. Des Moines, 1896 (Elrod) ; Waterloo, 
1906 (Miller). 
GOMPHUS Leach. 
G. vastus Walsh. Fairport, August 3, 1916; Clinton, June, 
1897 (Elrod); Fairport (Wilson). 
