1904.] NATURAL SCIENCES OF PHILADELPHIA. 571 



Melanoplus herbaceus Bruner. 



Florence, Pinal county, Arizona. June 2 and August 10, 1903. 

 (C. R. Biederman.) Two females. 



Melanoplus fiavidus Scudder. 



Florence, Pinal county, Arizona. August 25 and October 3, 1903. 

 (C. R. Biederman.) One male, one female. 



Mr. Caudell has compared these specimens with U. S. National 

 Museum material and regards them as fiavidus. From specimens of 

 fiavidus from Wyoming, determined by Bruner, they differ in the slen- 

 derer form, in which respect they are approaching M. elongatus, but 

 the structure of the cerci are not as in that species. 



Melanoplus exoelsus Scudder. 



Truchas Peak (at timber-line, 13,000-14,000 feet), Rio Arriba 

 county, New Mexico. August 2, 1902. (W. P. Cockerell.) Two 

 males. 

 Melanoplus atlanis (Riley). 



Florence, Pinal county, Arizona. May 8, 18, and 20 and September 

 20, 1903. (C. R. Biederman.) Three males, one female. 



Las Vegas, San Miguel county. New Mexico. July 10, 1902. 

 (Oslar.) One male. 



Melanoplus aridus (Scudder). 



Florence, Pinal county, Ai'izona. July 13, September 20 and Octo- 

 ber 3, 1903. (C. R. Biederman.) One male, two females. 



Melanoplus altitudinum (Scudder). 



Raton, Colfax county, New Mexico. August 1, 1902. (Oslar.) 

 One female. 



Prescott, Yavapai county, Arizona. June 9, 1902. (Oslar.) One 

 male. 



Copper Basin, Arizona. July 7, 1902. (Oslar.) Two females. 



The above individuals fully agree in structure wdth a series from the 

 Big Horn Mountains, Wyoming, but are slightly smaller; in this respect 

 similar to several specimens from the Sacramento Mountains, southern 

 New Mexico. 



Melanoplus sapellanus Scudder. 



Truchas Peak, Rio Arriba county. New Mexico. August 2, 1902. 

 (W. P. Cockerell.) Three females. 



Melanoplus femur-rubrum (DeGeer). 



Prescott, Yavapai county, Arizona. June 7, 1902. (Oslar.) One 

 male. 



