128 DRAGONFLIES OF NORTH AMERICA 
Mr. J. L. Graf (Wmsn. ’07, p. 5) observed this species ovipositing 
in damp algae while at rest on rocks just above the water. 
82. Boyeria grafiana Williamson 
Wmen. ’07, p. 1: Mtk. Cat. p. 102: Walk. 18, p. 161: Howe ’19, p. 42: 723, 
pei2i: 
Length 64 mm. Expanse 88 mm. Mass. and Ont. to Pa. and Ky. 
A handsome brown species with bluish face and side spots. Face and frons 
bluish or yellowish with an obscure diffuse T spot on the top of the latter. Vertex 
brown with a pale hind border. Front of thorax with 2 narrow bluish yellow 
spots that strongly diverge forward and that are dilated at their upper end 
before the collar. Sides with 2 large bluish yellow spots on the lower more convex 
portion. Legs obscure brownish. Wings hyaline with brown costa and tawny 
stigma. A diffuse brownish spot at extreme base along the veins. Abdomen 
brown, auricles of male yellow; 3 narrow pale spots on dorsum of second segment, 
one basal, two lateral and transverse; segments 3-7 with broad, smooth, basal 
brown cross bands followed by encircling yellow line narrowed at sides, and a 
pair of submedian, narrow, transverse, pale dashes. 9 and 10 paler on sides. 
Appendages brown. 
17. ANAx Leach 
The Green Darners 
These are large, strong flying dragonflies. The males lack auricles 
on the second abdominal segment, and the adjacent wing margin is 
not notched, nor. stiffened with an anal triangle. The upper section of 
the arculus (undivided portion of vein M) is very short, so that both 
its sectors spring from the upper half. 
The nymphs are active climbers in submerged vegetation. Their 
long, smooth bodies are decorated in a neat protective pattern of greens 
and browns. There are lateral spines only on segments 7—9 of the ab- 
domen. 
The genus is world wide in its distribution. It contains some 27 
The Nymphs 
Species Length Teeth on Cleft of | End hook** | Movable hook} Described by 
Med. lobe* Med. lobe | Character Setae 
junius 40-62 0 closed rounded moderate Cabot ’81, p. 15 
longipes 62 at cleft opent truncate 
amazili 53 at cleft opent truncate coarse Byers ’27, p. 67 
walsinghami 58 wide apart open truncate fine Byers ’27, p. 66 

* Median lobe of labium. 
** Of lateral lobe of labium. 
+ Reaching the level of the cord: caudal app. more than 8 mm. long. 
t Not reaching the level of the cord: caudal app. about 6 mm. long. 
