1904.] NATURAL SCIENCES OF PHILADELPHIA. 527 



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

 female. 



The males are inseparable from an individual of that sex from Cuer- 

 navaca, Morelos. 



Genus MESTOBREGMA Scudder. 



1876. Mestobregma Scudder, Bull. U. S. Geol. and Geograph. Surv. Terr., 

 II, p. 264. 

 Type. — (Edipoda plattei Thomas. 



Mestobregma mexicanum (Saussure). 



1884. Ps[inidia] mexicana Saussure, Prodr. CEdipod., p. 164. [''Ager mex- 

 icanus."] 

 Guadalajara, Jalisco. August 17, 1903. (McClendon.) One male. 

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

 male, one female. 



The female individual has the metazona dull green and the anal field 

 of the tegmina margined with rosaceous. 



Genus TRIMEROTROPIS Stll. 

 1873. Trimerotropis Stal, Recensio Orthopt., I, p. 118, 134. 

 Included T. placida Stal { = ocliraceipcnnis Blanch.) and T, maritima 

 (Harris), of which the latter may be considered the type. 



Trimerotropis vinculata Scudder." 



1876. Trimerotropis rinculata Scudder, Proc. Boston Soc. Nat. Hist., 

 XVIII, p. 270. [Guadalupe Island, off Lower California; San Diego, 

 Cal.; Mexico.] 

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

 males, three females. 



San Luis Potosi, State of San Luis Potosi. August 5, 1903. (M. E. 

 Hoag.) Five males, three females. 



Guadalajara, Jalisco. August 24 and 28, September 14, 18 and 

 22, 1903. (McClendon.) Three males, seven females. 



Zapotlanejo, Jalisco. July 31, 1903. (McClendon.) Three males. 



Genus HADROTETTIX Scudder. 



1876. Hadrotettix Scudder, Rep. Chief Engineers, 1876, Pt. 3, p. 511. 



Type. — Gryllus fasciatus Say. 



Hadrotettix trifasciatus (Say). 



1825. Gryllus trifasciatus Say, Amer. Ent., II, PI. 34, page seven of text 

 (unnumbered). ["In Arkansaw, at the distance of about three hundred 

 miles from the Rocky Mountains."] 



Casas Grandes, Chihuahua. September, 1902. (Dr. W. E. Hughes.) 



« The specimens previously recorded by me as T. fascicula {Trans. Amer. Ent. 

 Soc, XXVII, p. 227, and XXIX, p. 11) prove to belong to this common species 

 of the western United States. 



