GOMPHUS 115 
This species was also fairly common at the riffles but unlike plagiatus it fre- 
quently alighted on the river bank and was then comparatively easy to capture. 
69. Gomphus cornutus Tough 
Tough ’00, p. 17: Mtk. Cat. p.91: Mtk.’10, p. 110: Mtk. & Whed. ’15, p. 88, 
90, 97. 
Length 50 mm. Expanse 63 mm. Ont. to Iowa, Wis. 
A yellowish green species with black and brown markings. Face and occiput 
greenish. Thoracic stripes of the first pair obscure, separated, abbreviated below, 
divergent towards both ends; stripe 2 wanting; 3 better developed, entire, con- 
fluent at crest with 1; 3 and 4 entire but diffuse and obscure. Legs black, front 
femora green beneath. Wings hyaline, veins black, costa pale, stigma yellowish. 
Abdomen blackish with middorsal row of spots on 1-8; small and basal on 9; 
also a small quadrangular spot on 10. Appendages blackish. 
Found by Whedon (15 p. 95) ‘‘transforming at a little kettle-hole 
near Mankato (Minn.). A fresh female and a dozen exuvia were picked 
up from floating sticks, algae, etc., at this time.” 
a 
Z © 
sl, 
70. Gomphus whedoni Muttkowski 

whedoni 

Mtk. 713, p. 167. 
Length 50 mm. Expanse 63 mm. Wis. 
This species though appearing to differ from G. cornutus strikingly in form 
of superior appendages of the male (as stated in the key), according to the 
describer, shows no other differences and is perhaps only a specimen in which 
these appendages have suffered an arrested development. Doubtfully distinct. 
71. Gomphus furcifer Hagen 
Hag. ’78, p. 458: Mtk. Cat. p. 93: Howe ’18, p. 34: ’23, p. 183: Garm. ’27, p. 158. 
Length 46 mm. Expanse 64 mm. Mass., N. Y., Ohio, Mich. 
A dark colored greenish species, striped with black. Face and occiput green. 
Thoracic stripes of the first pair well separated at the carina, ill defined, rather 
