410 PROCEEDINGS OF THE ACADEMY OF [Sept., 



These specimens vary considerably in size, as is usual in this species, 

 particularly in the females. No difference is noted between Pennsyl- 

 vania and New Jersey specimens and those recorded above. All the 

 individuals here studied have the tegmina falling short of the tips of 

 the caudal femora. 



The Windy Point record carries the vertical range of this species a 

 thousand feet higher than previous records. 



This was the only species to be found in the dense pine woods back 

 of Old Faithful Geyser, and it was one of the very few distinctly sylvan 

 species taken. One specimen, however, was captured above -the 

 timber-line on Pike's Peak and one on the prairie outside of Colorado 

 Springs. The insects were extremely powerful and vigorous. 



Melanoplus femur-rubrum (DeGeer). 



Three Forks, Gallatin Co., Montana, Aug. 12, 2 d". WHlow Creek, 

 Gallatin Co., Montana, Aug. 12, 2 d^. Sappington, Gallatin Co., 

 Montana, Aug. 12, 3 6^, 2 9. Mammoth Hot Springs, Yellowstone 

 Park, Aug. 5, 4 d^, 1 9 . Geyser crust, Old Faithful, Upper Geyser 

 Basin, Yellowstone Park, Aug. 7, 4 cJ^ , 1 ? . Five miles south Salt 

 Lake City, Utah, in alfalfa field, Aug. 13, 1 6^. Grand Junction, Mesa 

 Co., Colorado, Aug. 15, 1 6^. Knob Hill, Colorado Springs, Colorado, 

 Aug. 17-22, 39 c^, 21 ?. Manitou, Colorado, Aug. 22, 1 c?, 5 9 . 

 Garden of the Gods, Colorado, Aug. 17, 1 cJ', 2 9. Dark Canon, 

 Pike's Peak, Colorado, 8,920 feet, Aug. 16, 1 cJ^. Roggen, Weld Co., 

 Colorado, Aug. 24, 4 6^. Table Rock, Pawnee Co., Nebraska, Aug. 

 25, 1 (^. Hannibal and Louisiana, Missouri, Aug. 25, 2 cJ^. St. 

 Louis, Missouri, Aug. 27, 4 c?, 1 9 . 



The Colorado series contains individuals which are typical of M. 

 plumbeus as understood by Scudder, but from this extremely bright 

 type any number of intermediates, forming a complete chain and con- 

 necting the dull form of femur-rubrum found in the East, can be selected. 

 From the Knob Hill series alone the extreme plumbeus type and typical 

 femur-rubrum with seven graded intermediates can be selected. The 

 majority of specimens belong to the intermediate forms, the extremes 

 being scarcer, in the studied series, than the annectant forms. 



The authors fully agree with Gillette's remarks ^^ on this species and 

 cannot consider plumbeus as other than brightly colored femur-rubrum. 

 The specimens from Roggen, Colorado, Nebraska and Missouri do not 

 approach plumbeus. The specimens from Montana localities are very 



2« Bull. 94, Colo. Agr. Exp. Sta., pp. 48-50. 



