40 BULLETIN 94. 
pratensis Scudd. This is a fairly common, though not an abundant 
species over the plains and lower foothills of eastern Colorado. 
It seems to be of 110 economic importance as we have only 
recorded it feeding upon sunflower ( Helianthus ). 
Our earliest were taken at Ft. Collins, July 6th, 1901, 
and our latest were taken at Greeley, Oct. 3, 1902. At 
Rockyford, July 16, 1901, this species was just becoming adult 
upon sunflowers. (Ball). At Ft. Collins on June 26 of the same 
year the nymphs were noted as being one-third grown (Ball). 
We have made captures of this insect at the following 
points in the State: Ft. Collins, Livermore, Dutch George’s, 
Home, Julesburg, Merino, Wray, Bald*Mt., Boulder, Golden, 
Palmer Lake, Colorado Springs, Lamar and Holly; also at 
Kimball and Stratton, Nebraska (Ball). 
The greatest altitude at which we have taken this species 
is between 7,000 and 8,000 feet. 
speciosus Scudd. This species occupies the same regions, practical¬ 
ly as pratensis. It extends over the entire eastern portion of 
the State to the foothills and we have taken specimens at an 
elevation of somewhat over 6,000 feet in the hills. 
The native food-plants of this species are sunflower ( He - 
lianthus ) and a closely related composite, Iva xanthifolia . 
It is a much more abundant grasshopper than pratensis. 
This species has been taken at the following places: Ft. 
Collins, Livermore, Dutch George’s, Sterling, Julesburg, Or¬ 
chard, Wray, Greeley, Merino, Pueblo, Rockyford, Las Ani¬ 
mas, Nepesta, Lamar and Holly. 
The 34 males in the collection vary between 20 mm. and 
26 mm. in length, and the 66 females vary between 25 mm. 
and 34 mm. The wings are variable in length but in the 
great majority of cases they fall a little short of the tip of the 
abdomen in both sexes. Sometimes they are considerably 
shorter than the abdomen and occasionally they are slighlty 
longer. The males above mentioned have wings varying 
between 20 mm. and 26 mm. and the females have wings 
between 13 mm. and 24 mm. in length. 
As this grasshopper feeds entirely upon native weeds it 
can not be considered of economic importance. 
viridis Thom. This is one of the handsomest and most common of 
the plains species and occurs over all the eastern portion of 
the State up to the base of the foothills, where it is as abun- 
*West of Loveland on Estes Park road. 
