2A2 NEW YORK STATE MUSEUM 
Argia apicalis Say 
Plate 17, fig. 1 
1839 Agrion apicalis Say, Acad. Nat. Sci. Phila. Jour. 8:410 
1861 Agrion apicale Hagen, Synopsis Neur. N. Am. p.91 
1893 Argia apicalis Calvert, Am. Ent. Soc. Trans. 20:233 
1898 Agrion apicalis Davis, N. Y. Ent. Soc. Jour. 6:196 (listed 
from Staten Island) 
1899 Argia apicalis Kellicott, Odon. Ohio, p.26 (description) 
1900 Argia apicalis Williamson, Dragon Flies Ind. p.264 
This species I did not find either at Saranac Inn or at Ithaca, 
but I bred it in 1895 at Galesburg II1l., and in 1896 at Havana 
Ill. At Galesburg it was exceedingly abundant on the clayey 
banks of a rather deep woodland pond; at Havana it is exceed- 
ingly abundant at the mouth of the Spoon river, and on the 
west bank of the Illinois river below that point. On the sandy 
east bank of the Illinois river I did not observe it at all. 
Imagos when fully mature are of a very bright, beautiful 
blue color, unobscured by pruinosity, as in the last species. 
But they are long in attaining their full coloration, and teneral 
specimens are of a pale flesh tint. JI observed the imagos, both 
teneral and mature, at Galesburg feeding voraciously on adult 
Chironomids. Transformation takes place on some bank or 
projecting timber within a few inches of the edge of the water. 
Nymph. Length 12.5mm, gills 5mm additional, abdomen 
8mm; width of head 3.1mm. Antennae six-jointed. Lateral 
setae three, occasionally four, but then the fourth is much 
Smaller than the others. Median lobe of labium with a median 
Y-shaped chitinization, the arms of the Y projecting forward. 
Gills half as wide as long, with margins parallel for a distance, | 
usually showing a paler transverse streak at three fourths their | 
length. Wing tips reaching well across the sixth abdominal © 
segment... 
Nymphs of this species kept in an aquarium at Galesburg 
intermittently swayed the abdomen from side to side, appar- 
ently as an aid to respiration; yet other nymphs in the same 
aquarium, having lost their gills, did not seem to suffer in con- 
sequence, though kept for weeks, and finally transformed into 
perfect specimens. 
Argia violacea Hagen 
Plate 13, fig.4,5 
1861 Agrion violaceum Hagen, Synopsis Neur. N. Am. p.90 
1893 Argia violacea Calvert, Am. Ent. Soc. Trans. 23:233 
