1906.] NATURAL SCIENCES OF PHILADELPHIA. 413 



Springs, Yellowstone Park, Aug. 5, 1 9 . Salt Lake City, Utah, Aug. 

 13, 2 c?, 2 9 . Top of Ensign Peak, Salt Lake City, Aug. 13, 1 &. 

 Five miles south of Salt Lake City, in alfalfa field, Aug. 13, 1 & , 4: 9 . 

 Knob Hill, Colorado Springs, Colorado, Aug. 17-22, 18 c , 25 9. 

 Prairie land, Colorado Springs, Aug. 18, 3 9 . Garden of the Gods, 

 Colorado, Aug. 17 and 23, 1 c?, 1 9 . Fort Morgan, Colorado, Aug. 24, 

 1 9. 



From the above series it is quite evident that representatives of this 

 species from the general vicinity of Colorado Springs are smaller than 

 specimens from Montana, Yellowstone Park, Utah and eastern 

 Colorado. Males from IMontana, I'tah and the Yellowstone range 

 between 27 and 30 millimeters in length of body, while Knob Hill 

 males measure from 22.5 to 26. The single female from Fort Morgan, 

 however, is as large as the average Utah female. Specimens examined 

 from several Nebraska localities are about the same size as the Knob 

 Hill individuals and smaller than the Fort Morgan representative. 



In coloration the Montana, Utah and Yellowstone individuals are 

 much more strikingly colored than those from Knob Hill, the colors 

 being more contrasted and richer. In a series of six specimens from 

 Boulder and Fort Collins, examined in this connection, several are 

 brightly colored ; one male, the only Boulder specimen, being as striking 

 as Utah individuals. 



In the series listed above seven specimens have wholly glaucous 

 caudal tibiae, while the remainder vary from carmine to pale pinkish, 

 including some solferino and very pale purplish tibiae, while one (Salt 

 Lake City) has partially glaucous, partially solferino and purple tibiae, 

 the glaucous pale and limited to the proximal portion of the lateral 

 faces. 



The specimens of this species taken at Salt Lake City were almost 

 all from the luxuriant weeds growing along ditches and drains. Those 

 from Colorado Springs were captm-ed in the more heavily weed over- 

 grown spots about damp depressions in the prairie. The insects were 

 active, but often clung tenaciously to the weeds in which they hid, and 

 it was consequently easy to capture as man}^ as desired. 

 Melanoplus conspersus Scudder. 



Colorado Springs, Colorado, Aug. 18, 2 cJ^, 1 9 . Knob Hill, Colorado 

 Springs, Aug. 17-22, 39 cJ^, 18 9 . Prairie land, Colorado Springs, Aug. 

 18, 2 9. Garden of the Gods, Colorado, Aug. 17-19, 13 d', 5 9. 

 Akron, Washington Co., Colorado, Aug. 24, 1 9 . 



This species in the highly colored individuals is quite handsome and 

 appears rather different from the duller specimens, which differ how- 



