1917.] NATURAL SCIENCES OF PHILADELPHIA. 265 



Teapa, Tabasco, IIL (H. H. Smith), So', 49 , [Hebard Cln.]. 



Frontera, Tabasco, I, (H. H. Smith), Id', [Hebard Cln.]. 



Merida, Yucatan, (Gavnner), 2d, 19, [Hebard Cln.]. 



Chichen Itza, Yucatan, (E. Thompson), 6d, Q9 , [Field Mus. Nat. Hist.]. 



Valladolid, Yucatan, (Gaumer), 5cf, 29, [Hebard Cln.]. 



Campylacantha similis Scuddcr. 



1S97. Cninpylacanlha similis Scudder, Proc. U. S. Nat. Mus., XX, p. 52, 



PL IV, fig. 5. [cT, 9; Lerdo, Durango, Mexico.] 

 Monclova, Coahuila, XI, 22, 1909, (F. C. Bishopp), Ic^, [U. S. N. M.]. 

 Lerdo, Durango, XI, 1887, (L. Bruner), Id,'' [Hebard Cln.]. 



Ttie five known forms of this genus all show rather close affinity. 

 Nearest approach to the present insect is shown by C. lamprotata 

 Rehn and Hebard. Compared with that insect, similis is found to be 

 more robust, with coloration deeper and less brilliant. The males 

 of Campylacantha, like those of Hesperotettix, differ from the majority 

 of the species of the Melanopli in having the genitalia very much 

 alike in all of the species belonging to the genus. 



The male from Monclova has the tegmina reaching the apex of 

 the supra-anal plate; in the Lerdo males the tegmina are shorter, 

 about half as long as the abdomen. 



Hesperotettix meridionalis Scudder. 



1897. Hesperoiettix meridionalis Scudder, Proc. U. S. Nat. Mus., XX, p. 59, 

 PL lY, fig. 9. [d , 9 '• Guanajuato, Guanajuato, and Sierra Nola, Tamau- 

 lipas, Mexico.] 



Durango, Durango, (O. W. Barrett), Id , [Hebard Cln.]. 

 Guadalajara, Jalisco, VI and VII, 1903, (J. F. McClendon), 19, 

 [A. M. N. H.]. 



This insect is the optimum development of the forms of the Viridis 

 Group. The intensified coloration, particularly of the black 

 marldngs, combined with its heavier build, gives the species a dis- 

 tinctive facies when compared with its nearest ally, H. viridis. 



The male from Durango is less brilliantly colored and much smaller 

 than the type, now before us. 



The female specimen of H. pratensis labelled "Orizaba, Mexico" 

 in the Hebard Collection ex Bruner, recorded both by Scudder and 

 Bruner, is in our opinion probably incorrectly labelled. 



We can find no material of H. speciosus from northern Chihuahua 

 as recorded by Bruner and do not believe the species occurs in that 



region. 



Melanoplus scitulus Scudder. 



1897. Melanoplus scitulus Scudder, Proc. U. S. Nat. Mus., XX, p. 249, 



PI. XVI, fig. 10. [d, 9 ; Mount Alvarez, San Luis Potosi, Mexico.] 

 Sierra de San Miguelito, San Luis Potosi, (E. Palmer), 1 9 , [Hebard Cln.]. 



" In addition to the typical series in the Hebard Collection. 



