DROMOGOMPHUS Vi hrg 
over the riffles. Half submerged boulders in mid-stream seem to be 
their preferred resting places. 
Wilson (’09, p. 656) found it. 
Common, squatting on bare ground, logs and rocks; strong and pugnacious; 
catches and eats smaller dragonflies such as Leucorrhinia and Sympetrum. 
11. Dromogompuus Selys 
These are large yellowish green Gomphines with spiny hind legs. The 
venation is as in Gomphus, and only the legs show distinctive charac- 
ters. The hind femora are armed beneath with a row of 5 to 7 long, 
strong spines. 
The nymph of this genus (page 60, no. 7) bears a sharp median 
abdominal ridge that ends posteriorly on each segment in a straight 
spine. The lateral abdominal appendages are considerably shorter than 
the inferiors. 
The genus includes only the three following nominal North American 
species. 
KEY TO THE SPECIES 
Adults 
1 Face with a cross stipe of brown on the fronto-clypeal suture 
We ushet J ale Algae Ae ieee pak yee e cians Mes we armatus, p. 117 
Paes yellow! 2 Ate 8) wea Tiree Fee aoe ty hee ee a. Bers 2 
2 Thoracic stripes 4 and 5 present............... spoliatus, p. 117 
Thoracic stripes 4 and 5 wanting.............. spinosus, p. 118 
73. Dromogomphus armatus Selys 
Selys 754, p. 59: Mtk. Cat. p. 100. 
Length 54 mm. Expanse 76 mm. Ga. 
A yellowish species with faint thoracic stripings. Face yellow with a narrow 
brownish line across the middle suture. Thoracic stripes of the first pair very 
narrowly linear and separated by the yellow carina, isolated from 2 above and 
below. Stripes 2 and 3 narrow and separated by a still narrower yellow line. 
Stripes 4 and 5 broader, continuous, diffuse. Wings hyaline with yellowish costa 
and stigma. Abdomen very much dilated on the terminal segments, yellow with 
a broad brownish black stripe each side. 
74. Dromogomphus spoliatus Hagen 
Hag. ’57, p. 409: Mtk. Cat. p. 100: Wmsn. ’20, p. 101: Garm. ’27, p. 169. 
Length 62 mm. Expanse 75 mm. Wis., Ind., O., Tex. 
A fine big yellowish species striped lightly with brown. Face and occiput 
yellow. Thoracic stripes of the first pair widely separated at the carina, and 
