tS 
Vol. xxv] ENTOMOLOGICAL NEWS 225 
September Dragonflies about Mesa, Arizona (Odon.). 
By E. B. Wiitramson, Bluffton, Indiana. 
In September, 1912, Mr. B. J. Rainey collected dragon flies 
extensively about Mesa, Arizona. All species seen by him, 
with but one exception, were captured, and the following list 
is probably practically complete for this section at the season 
when he collected. He kindly turned the entire collection of 
588 specimens over to me, and furnished the notes on the 
habits of different species. 
Collections were made at the following locations: 
Cnandler, 9 miles south of Mesa, desert country with irri- 
gating ditches. 
Granite Reef Dam, on Salt River, 9 miles above Mesa, col- 
lected along river, up-stream from dam. 
Tempe, 6 miles west of Mesa, collected along irrigating 
ditches. 
Mesa is on Salt River. On September 9 he collected along 
an irrigating ditch, 12 feet wide, 1 mile south and 3 miles east 
of Mesa. 
Hetaerina americana. Common everywhere about swift or slow 
water: on grass and bushes over water. Sept. 11, south of Mesa; 
Sept. 12, Eastern Canal, Mesa; Sept. 12, Tempe; Sept. 15 and 22, 
Granite Reef Dam; Sept. 16, east of Mesa; Sept. 18, Salt River, 
Mesa: 56 ¢ and 42 9. 
Argia moesta. Sept. 10, Mesa; Sept. 15 and 22, Granite Reef 
Dam: 2 ¢ and 6 @. 
Argia sedula. Associated with WHetaerina americana. Sept. 8, 
along ditch north of Mesa; Sept. 10, 16 and 18, Mesa; Sept. 15 and 
22, Granite Reef Dam: 80 ¢ and 5 Q. 
Argia pallens. On islands in Salt River, Mesa, Sept. 18, in grass 
back from the water; Sept. 22, Granite Reef Dam: 5 ¢ andi Q. 
Enallagma civile. Common along irrigating ditches, resting on 
twigs in water or near water. Sept. 9 and 10, Mesa; Sept, 8, along 
ditch north of Mesa; Sept. 11, south of Mesa; Sept. 12, Tempe; 
Sept. 16, east of Mesa: 45 @ and 10 9. 
Enallagma praevarum. August 31, Sept. 18 and 22, Mesa: 10 ¢ 
and 2 Q. 
Telebasis salva. In grass and on twigs in water. Sept. 8, 9, 10, 
11, 16 and 18, Mesa, Salt River, north, east, southeast and south of 
Mesa; Sept. 17, Chandler: 112 ¢ and 19 Q. 
