1907.] NATURAL SCIENCES OF PHILADELPHIA. 31 



These specimens full}' agree with New Mexican and Mexican in- 

 dividuals of this species. One female belongs to the long-winged form 

 P. toltecus extensus Morse. 

 Paratettix meiicanus (Saussure). 



Huachuca .Mountains (Schaeffer), 1 cJ*. 



ACHUBTJM Saussure. 

 Aohurum aoridodes (St&l). 



Carr Canyon, Huachuca Mountains, August, 1905 (Skinner), 1 d^. 

 Palmerlee, August (Schaeffer), 1 9 . 



After comparison of these specimens with two females of true .4. 

 sumichrasti from Guadalajara, Jalisco, Mexico, the conclusion is reached 

 that two species are represented. The Arizona specimens differ from 

 the Jalisco individuals in the head being somewhat less elongate, with 

 the eye somewhat shorter and the antennaj distinctly shorter and 

 slenderer. The pronotum also is not so elongate and the lateral lobes 

 are distinctly shorter than in sumichrasti, while the lobes of the genic- 

 ular region of the caudal femora are distinctly less elongr.te and 

 stouter, the length of the principal genicular lobes in sumichrasti being 

 equal to that of the genicular arch, while in the Arizona specimens it is 

 distinctly less. The dorsum of the pronotum is obscurely punctate 

 on the cephalic portion of the prozona and all of the metazona in 

 acridodes and lineato-rugose on the same areas in sumichrasti. On the 

 basis of this character of the pronotum the name acridodes has been 

 applied to this form, as Stal states in his description in the Recensio 

 Orthopteronan,' in comparing with sumichrasti, "pronotoque dorso 

 haud alutaceo-rugoso, sed antice et in lobo postico obsolete punctu- 

 lato." 



Burr in his key to the species of the genus^ appears to have misin- 

 terpreted Stal's remarks on the length of the tegmina, as the former 

 says: "Elytra abdomen haud superantia, " while Stal's words are; 

 "Elytra corpore paullo breviora, femoribus posticis plus duplo lon- 

 giora." It seems evident that Stal intended to mean the entire length 

 of the body rather than the apex of the abdomen, as in the latter case 

 the tegmina would have been very little longer than the caudal 

 femora, considering of course the slender femora present in this genus. 



MERMIRIA Stil. 

 Mermiria bivittata (Serville). 



Douglas, August (F. H. Snow), 1 d^, 1 9 . 

 n, p. 101. 



^ Trans. Ent. Soc. London, 1902, p. 178. 



