88 DRAGONFLIES OF NORTH AMERICA 
27. Gomphus brevis Hagen 
Hag. ’78, p. 60: Mtk. Cat. p. 90: Currie ’17, p. 223 (figs.): Garm. ’27, p. 149. 
Length 43 mm. Expanse 54 mm. Ont., Mass., N. J., to Wis. 
A short stout blackish species striped with greenish. Face cross-lined with 
black. Labrum all black except for a pair of small pale dots. Thoracic stripes 
of the first pair parallel-sided, confluent except on the middle of the carina, and 
separating a pair of pale opposed and inverted 7-marks on the front of the 
thorax. Legs black except at their bases. The middorsal line of yellowish lanceo- 
late spots of the abdomen disappears on the very base of the 8th segment, 9 and 
10 being wholly black above in the male. The lateral margins of 7 to 9 are nar- 
rowly orange. 
An early season species that inhabits the sandy beds of clear streams 
at moderate elevations. The senior author found it emerging before 
the middle of June at Saranac Inn in the Adirondacks and disappearing 
a few weeks later. Walker (‘08) reports it as rather common in Ontario, 
frequenting well aerated waters, such as rapid streams and the exposed 
shores of large lakes. 
parvidens 
abbreviatus 
brevis 

