264 PROCEEDINGS OF THE ACADEMY OF [July,. 



geographic race. To these species C. truncatipennis Scudder is rather 

 closely related. To crassus Scudder, genotype of Barytettix, Conalccea 

 neomexicana Scudder is very closely related and may indeed prove to 

 be a geographic race of that species. Baryiettix psninsulce Scudder 

 is a very distinctive insect, best referred at present to the genus 

 Sinaloa. 



Conalcsea crassa (Scudder). 



1897. Barytettix crassus Scudder, Proc. U. S. Nat. Mus., XX, p. 28, PL II, 

 fig. 10. [c?, San Jose del Cabo, Lower California, Mexico.] 



1897. Melanoplus nitidus Scudder, ibid., p. 207. (In part.) [ 9 , Cape 

 St. liucas. Lower California, Mexico.] 



Scudder admits the questionable association of the sexes for his 

 M. nitidus. The specimen from Cape St. Lucas is in every way 

 similar to one of the smaller females from San Jose del Cabo. A 

 number of topotypic specimens are before us. The entire series 

 of this species is dried alcoholic. 



Aidemona azteca (Saussure). 



1861. Platyphyma azteca Saussure, Rev. et Mag. de ZooL, (2), XIII, p. 161. 

 [cf , Temperate Mexico.] 



Mazatlan, Sinaloa, Icf, (elongate), [A. M. N. H.]. 



Tepic, Tepic, 3 juv., [Hebard Cln.]. 



Guadalajara, Jalisco, (D. L. Crawford), 3cf , (elongate), [A. N. S. P.]. 



Amecameca, Mexico, I, .5, 1899, VII, 11, 1898, 2d', 19, (Icf, 9 elongate),. 



[Hebard Cln.]. 

 Eslava, Distrito Federal, 1 9 , [Hebard Cln.]. 



Cuernavaca, Morelos, VI, (Barrett; Smith), Icf, 29, [Hebard Cln.]. 

 Matamoros, Morelos, VIII, 11, 1903, (W. L. Tower), 1 9 , [Tower Cln.j. 

 Rio Cocula, Guerrero, XII, 1898, (O. W. Barrett), Id, 29, (elongate), 



[Hebard Cln.]. 

 Tepetlapa, Guerrero, 3000 feet, X, (H. H. Smith), 2d, 19, (elongate), 



[Hebard Cln.]. 

 Dos Arroyos, Guerrero, 1000 feet, IX, (H. H. Smith), Id, (elongate), 



[Hebard Cln.]. 

 Mescala, Guerrero, (H. H. Smith), 19, (elongate), [Hebard Cln.]. 

 Amula, Guerrero, 6000 feet, VIII, (H. H. Smith), Id, 19, (elongate), 



[Hebard Cln.]. 

 Venta de Peregrino, Guerrero, (H. H. Smith), 1 9 , (elongate), [Hebard Cln.]. 

 Chilpancingo, Guerrero, 4600 feet, VI, (H. H. Smith), Sd, -4 9, (elongate), 



[Hebard Cln.]. 

 Omilteme, Guerrero, 8000 feet, VII, (H. H. Smith), Id', (short), [Hebard 



Cln.]. 

 Acapulco, Guerrero, IX, (H. H. Smith), \d, 19, (elongate), [Hebard Cln.]. 

 , Xucumanatlan, Guerrero, 7000 feet, VII, (H. H. Smith), 5d, (3 elongate), 



[Hebard Cln.]. 

 Presidio, Vera Cruz, (Forrer), 1 9, (elongate), [Hebard Cln.]. 

 Jalapa, Vera Cruz, VI, 1, 1894, So', 3 9 , 1 juv., [Hebard Cln.]. 

 Xico, Vera Cruz, Id, [Hebard Cln.]. 



Medellin, Vera Cruz, X, 1895, 4cr, 4 9 , 1 juv., [Hebard Cln.]. 

 Atoyac, Vera Cruz, V, XI and XII, (Smith; Bruner), 2cf , 2 9 , 2 juv., [Hebard 



Cln.]. 

 Cordoba, Vera Cruz, 1 9 ■ [Hebard Cln.]. 

 San Rafael, Vera Cruz, III and IV, (C. H. T. Townsend), 47 d^, 14 9 , [Hebard 



Cln.l. 



