170 Bulletin Wisconsin Natural History Society. [Vol. 10, Nos. 3-4. 
near by. On an attempt to discover its position the insect darted 
out again and off up the valley. Thinking it lost, I turned my 
attention to some large snails that were creeping about over the 
leaves of the bush. A moment later the Gomphus returned and 
lit almost under the net and was taken. No other Gomphi were 
seen on this date.” 
Here again a remarkable similarity of the hunting grounds of 
two related species is noticeable. Gomphus cornutus was taken 
by me at Milwaukee in a locality precisely the same as that 
described by Mr. Whedon. 
Zoological Laboratory, University of Wisconsin, Oct. 13, 1912. 
