1915] 
Muttkowski and Whedon: Gomphus Cornutus 
89 
Described from two individuals, one taken by A. D. Whedon, 
emerging at Front St. Pond, Mankato, Minn., June 7, 1913; 
the second taken by Dr. Wm. S. Marshall, of the University of 
Wisconsin, at Tenderfoot Lake, Vilas Co., Wis., early August, 
1913. 
The disparity between the two females is somewhat marked, 
especially as to general measurements and color and markings 
of the thorax of the Wisconsin specimen. Unfortunately that 
Fig. 1 . Gomphus cornutus Tough.. Head of Female, much Enlarged 
to Show “Horns.” 
from Minnesota has suffered in transshipment, the apical por- 
tions of the wings being lost and the “goat” horns being snapped 
off. However, the Wisconsin specimen is unimpaired and is 
therefore designated as the allotype of G. cornutus. 
The male shows no indication of the martial development of 
the head of the female. There is a projection over each lateral 
ocellus, but no trace of an upward process. The occiput is a 
bright yellow, flatly rounded, with a median notch, similar to 
