2 7 
REPORT OF ENTOMOLOGIST. 
STENOBOTHRUS Fischer. 
curtipennis Harr. A common species on native grasses along the 
mountains and foothills of the State and occurring in smaller 
numbers across the plains of the northern portion. We have 
found it most abundant at altitudes of 8,000 to 9,000 feet. 
We have taken adults as early as June 26th in the foothills 
near Ft. Collins and as late as Sept. 30th in the same place. 
We have taken no females with elytra long enough to reach 
to the tip of the abdomen. With the males, however, the 
wings just attain the tip of the abdomen. 
Specimens taken at Ft. Collins, Laporte, Dutch George’s, 
Home, Sterling, Orchard, Merino, Greeley, Ward, Salida, 
Gunnison, Antonito, Gizzard Head, Alder, Cameron Pass and 
Walden. 
PLATYBOTHRUS Scudder. 
brunneus Thom. Both sexes taken in and near Estes Park, Aug. 11 
to 13, 1903, sweeping native grasses between altitudes of 7,000 
and 8,500 feet. 
GOMPHQCERUS Thunberg. 
clavatus Thom. This is preeminently a high-altitude species,though 
it occurs down to an altitude of something less than 5,000 
feet, and has been taken by us along the Cache la Poudre 
river seven miles from the foothills. It occurs in large num¬ 
bers on grassy areas above timberline. We have recorded it 
abundant on Mt. Ouray (near Marshall Pass) at 12,500 feet 
altitude, Aug. 27th, 1899. 
In the foothills near Ft. Collins we have taken adults as 
early as June 17th, and on Marshall Pass as late as Oct. 7th. 
In the lower altitudes the species is not abundant. 
We have taken specimens at Ft. Collins, Laporte, Dutch 
George’s, Livermore, Westlake, Stove Prairie, Little Beaver, 
Home, Pueblo, Ward, Pike’s Peak at 12,000 feet (Cockerell), 
Marshall Pass (on Mt. Ouray), and Cerro Summit. 
The Colorado specimens are larger than Thomas’ type, 
females measuring between 18 and 22 millimeters in length, 
with elytra 4.5 mm. to 8 mm. long, and males measuring be¬ 
tween 15.5 mm. and 18 mm. in length. 
It seems strange that the type of this species should have 
been recorded as taken in Kansas. Probably this is an error. 
B00PED0N Thomas. 
nubilum Say. A rather common species along the Arkansas valley 
from Pueblo down, on moist ground where grasses grow. A 
few specimens have been taken from wheat and corn fields. 
