1904.] NATURAL SCIENCES OF PHILADELPHIA. 537 



Zapotlan, Jalisco. July 1, 1902. (C. H. T. To^Tisend.) Two 

 males. 



La Joya, San Luis Potosi. August 10, 1903. (M. E. Hoag.) One 

 female. 



Genus HESPEROTETTIX Scudder. 



187.5. Hesperotettix Scudder, Bull. U. S. Geol. and Geogr. Surv. Terr., II, 

 No. 3, p. 262. 



Type. — Hesperotettix viridis Scudder (not of Thomas) = Hespero- 

 tettix festivus Scudder. 



Hesperotettix meridionalis Scudder. 



1897. Hesperotettix meridionalis Scudder, Proc. U. S. Xat. Mus., XX, p. 59. 

 [Guanajuato; Sierra Xola, Tamaulipas.] 



La Joya. San Luis Potosi. August 10, 1903. (M. E. Hoag.) One 

 female. 



This specimen, while fully agreeing in measurements, structural 

 characters and major color characters, differs from Scudder's descrip- 

 tion in the more uniform greenish-yellow color of the head, and in the 

 presence of dull red pregenicular annuli on the anterior and median as 

 well as the posterior femora. 



Genus MELANOPLUS StM. 

 1873. Melanoplus Stal, Recensio Orthopterorum, I, p. 79. 

 Type, as designated by Scudder, M. femur-ruhrum (De Geer). 

 Melanoplus marculentus Scudder. 



1897. [Melanoplus] marculentus Scudder, Proc. Amer. Philos. Soc, XXXVI, 

 p. 6. [Montelovez, Coahuila; Sierra Nola, Tamaulipas; Sierra de San 

 Miguelito, and mountains twelve leagues east of San Luis Potosi; San 

 Luis Potosi; Bledos, San Luis Potosi; Zacatecas; Aguas Caliente, 

 Mexico.'^] 



La Joya, San Luis Potosi. August 10, 1903. (M. E. Hoag.) Two 

 males. 



One of the above specimens is considerably larger than Scudder's 

 measurements, and also has the tegmina much longer than either 

 the typical measurements or the other specimen examined. 



Melanoplus spretis (Thomas). 



"1865. Acridium spretis Thomas, Trans. 111. St. Agric. Soc, V, p. 450." 

 Guadalajara, Jalisco. August 17 and 24, September 14 and 18, 

 1903. (McClendon.) Five males, two females. 



Melanoplus atlanis (Riley). 



1875 Caloptenus atlanis Riley, Seventh Ann. Rep. Missouri State Ent., p. 

 169. [New Hampshire.] 



Guadalajara, Jalisco. August 27, 1903. (McClendon.) One male. 



" As Scudder gives no localities in his preliminary paper, the above informa- 

 tion is taken from his later paper (Proc. U. S. Nat. Mus., XX, p. 141). 



