166 



PROCEEDINGS OF THE ACADEMY OF 



[Feb., 



Length of body, . 

 Length of pronotum, 

 Length of tegmen, 

 Length of caudal tegmen, . 



Length of body, . 

 Length of pronotum, 

 Length of tegmen, 

 Length of caudal tegmen, 



Scudder's Meas. 

 20 mm. 



Cloud croft. 



6 

 10 





6' 



16.2 mm. 

 4 



4.5 " 



10.3 " 



9 9 



21.75 mm. 18.2 mm. 

 5 



4.7 



6 

 10 



a 



12 



a 



a 

 it 



C? 



17.2 mm. 



4 



4.5 

 10.2 



Q 

 25 



5 



5.2 

 12 



mm. 

 a 



a 



a 



Fig. 16. — Melano- 

 plus calidus 

 Scudder. Lateral 

 outline of apex of 

 abdomen. (X 4.) 



The great length of the body in the last measured specimen is 

 in part at least due to distension. The tegmina are quite uniform 



in the males, while in the females 6.3 mm. is the 

 greatest length found. The caudal margin of 

 the pronotum is subtruncate in a few individuals, 

 and very slightly and broadly obtuse-angulate in 

 the great majority. In color the general tone varies 

 from gray-brown to umber-brown, but the pattern 

 varies but little, while the pale yellowish stripe 

 is more marked in some specimens than in others. 

 This species is apparently very close to M. 

 quadratus Scudder from South Fork of Eagle 

 Creek, 8,100 feet, White Mountains, New Mexico; at least the two 

 descriptions are veiy similar and specimens are determined with con- 

 siderable difficulty. 



Melanoplus differentialis (Thomas). 



This destructive species was found swarming on irrigated land along 

 the Rio Grande below El Paso, July 11, two males being taken, while 

 at Albuquerque it was found plentiful in high weeds on cultivated 

 land on September 14, a pair being collected. 



Melanoplus bivittatus (Say). 



A series of five males and eight females was taken in the bottom- 

 land at Albuquerque on September 14. The caudal tibiae are quite 

 black proximad in a number of individuals and some shade of glaucous 

 distad in all but three specimens, which are more or less strongly 

 yellowish on that portion of the tibise. The dark line on the dorsal 

 portion of the lateral face of the caudal femora is distinctly marked 

 in all the individuals. 



