1917.] NATURAL SCIENCES OF PHILADELPHIA. 269 



tinctly longer than broad. Variation in the male cerci is also founds 

 but no approach is shown in the series before us to Scudder's figure 

 for inornatus, showing a mesially constricted condition. The male 

 without data, described as inornatus, may have represented a different 

 species from the female. As the single type has been selected, a 

 female, this would have no effect on the synonymy indicated above. 



elanoplus thomasi Scudder. 



1897. Mclaiioplus thomasi Scudder, Pioc. U. S. Nat. Mus., XX, p. 368, 



PI. XXV, fig. 1. [cf, Lerdo, Durango, Mexico.] 

 Durango, Durango, (O. W. Barrett), IcT, [Hebard Cln.]; XI, 27, 1909, 



(F. C. Bishopp), 2c^, 1 9 , [U. S. N. M.]. 

 Escuinapa, Sinaloa, (J. H. Batty), 1 9 , [A. M. X. H.]. 



The pale lateral pronotal lines are wider in the Escuinapa example 

 than in the others of this large and handsome insect. 



Melanoplus diiFerentialis (Thomas). 



1871. Caloplenus differentialis Thomas, Proc. Acad. Nat. Sci. Phila., 1871, 



p. 149. [cf , 9 ; Jackson County, Illinois.] 

 Guanajuato, Guanajuato, (A. Duges), Icf , [U. S. N. M.]; XII, 11, 1898, 1 9 , 



[Hebard Cln.]. 

 Vera Cruz, Vera Cruz, (T. Heyde), 2c?, [Hebard Cln.]. 

 Medellin, Vera Cruz, IX, 1895, 2d^, 59 , [Hebard Cln.]. 

 San Rafael, Vera Cruz, (C. H. T. Townsend), 2d^, [Hebard Cln.]. 



Melanoplus corpulentus Scudder. 



1897. Melanoplus corpulentus Scudder, Proc. U. S. Nat. Mus., XX, p. 313, 

 PI. XX, fig. 10. [d", 9 : Tlalpam, Distrito Federal; San Luis Potosi and 

 Sierra de San Miguelito, San Luis Potosi; Zacatecas, Zacatecas, and Sonora, 

 Mexico: Silver City, New Mexico.] 



Casas Grandes, Chihuahua, IX, 1902, (W. E. Hughes), 1 9 , [A. N. S. P.]. 

 Eslava, Distrito Federal, IX, 1898, (O. W. Barrett), Ic?, [Hebard Cln.]. 

 Tacubaya, Distrito Federal, IX, 19 , [A. N. S. P.]. 



Cuernavaca, Morelos, I, 4, 1899 and II, 1898, (O. W. Barrett), Ic?, 19 

 [Hebard Cln.]. 



Melanoplus regalis (Dodge). 



1876. Caloplenus regalis Dodge, Can. Ent., VIII, p. 11. [Glencoe, 



Nebraska.] 

 1902. /Eolopliis crassus Scudder and Cockerell, Proc. Davenport Acad. 



Nat. Sci., IX, p. 42. (In part.) [ 9 , San Luis Potosi, Mexico.] 



Casas Grandes, Chihuahua, IX, 1902, (W. E. Hughes), Id", [A. N. S. P.]. 

 San Luis Potosi, X, (from E. Palmer; G. Banoeta), 19 , cotype of /Eoloplus 



crassus Scudder and Cockerell, [M. C. Z.]. 

 Guadalajara, Jalisco, IX, 18, 1903, (J. F. McClendon), Id, [A. N. S. P.]. 



The present insect has not been previously recorded from Mexico 

 as regalis. Marked variation is shown by the material at hand. The 

 male from Guadalajara is very small and brilliantly colored, with 

 bright greens and yellows on head, pronotum and dorsal surfaces of 

 ca^xdal femora and brilliant nopal red on the ventral and internal 

 faces of the caudal femora, while the caudal tibise are deep glaucous. 

 The other specimens are larger, much less l^rilliantly colored and show 

 only traces of greenish on head and pronotum. 



