Sept., '04] . ENTOMOLOGICAL NEWS. 237 



dry pasture of short grass. In these localities they rose in 

 swarms, flying low and swiftly for usually from twenty to 

 thirty feet. They flew up so vigorously that single specimens 

 were difficult to take, even with a net ; and, had they not 

 beeen so very common, it would have taken a considerable 

 time to collect a large number. As it was, I could get a dozen 

 or more in my net by sweeping the ground in front of me as I 

 crossed a pasture. I have seen a specimen, when pursued, 

 keep up a sustained flight of more than two hundred feet, 

 never rising more than four feet from the ground, but flying 

 more swiftly than one could run. The general color of these 

 specimens was almost always light brown ; two specimens, 

 however, which I took, were so dark that the markings were 

 hardly noticeable." 



A considerable range in intensity of coloration is presented 

 by this series, some specimens being extremely light-colored. 



Hippiscus tuberculatus (Palisot). 



Two males. Pequaming, July 6 and 18. 



" During the season I saw but two specimens, both of which 

 I took. They were males, and were easily captured with the 

 net. The first was taken in a garden on July 6, the other on 

 driftwood along the lakeshore on July iSth, more than a mile 

 distant from the place where the first specimen was taken." 



These two individuals are much darker and more uniformly 

 colored than eastern specimens, a fact which has also been 

 noticed by Scudder regarding specimens from Nepigon, Onta- 

 rio, across Lake Superior. The intensity of the lemon-yellow 7 

 humeral vitta of the tegmina is very striking. 



(To be continued.) 



Reduplication of the Tarsus in Hydrocharis. 

 BY H. F. WICKHAM, Iowa City, Iowa. 



Not long since, I received from Mr. Norman Criddle a speci- 

 men of Hydrocharis obtusatus Say, which he had taken near 

 Aweme, Manitoba. The insect presents a remarkable struc- 



