232 NORTH AMERICAN OEDIPODINAE (ORTHOPTERA; ACRIDIDAE) 



Description of Allotype. — This sex differs from virtual topotypes of the same 

 sex of D. h. haydenii in the following characters. Eyes slightly more promi- 

 nent and globose when seen from the dorsum, with width across eyes faintly 

 greater than, instead of subequal to, the width of metazonal disk, in profile 

 as in male sex; in cephalic aspect slightly more protuberant, making width 

 across eyes subequal to, instead of slightly less than, the greatest width across 

 genae. Pronotum with, the metazona of the disk broad, relatively short, 

 greatest width across same nearly equal to greatest length of pronotum. 



Coloration of type and allotype not distinctive, when compared with D. h. 

 haydenii. Both red and yellow disks are present on the wings, as in the typical 

 form of the species. 



Measurements (in millimeters) 



Greatest 



width of Length of 



jn Length of Length of pronotal Length of caudal 



O body pronotum disk tegmen femur 



Double Windmill, Texas, <(/pe. . 15.1 3.3 2.7 15.8 8.9 



Double Windmill, Texas, para- 

 type 15.4 3.2 2.7 17 9 



Marfa, Texas, paratype 15.4 3 2.8 17 .9 10 .2 



Puertacitas Mountains, Texas, 



paratype 15.8 3.4 3 17.5 9.4 



9 



Maria, Texas, allotype 23.8 4.8 4.5 25 12.5 



Persimmon, Gap, Texas, para- 

 type 23.6 5 4 24 13 



Specimens Examined: 46; 18 cf , 28 9. 



Texas: Sierra Blanca, El Paso County; Puertacitas Mountains and Marfa, 

 Presidio County ; Double Windmill and Persimmon Gap, Santiago Mountains, 

 Brewster County and Marathon, Brewster County. 



Coahuila: Monclova and Jimulco. 



DuRANGo: Lerdo. 



Zacatecas: Camacho. 



A male from Double Windmill, bearing the same data as 

 the type; a male from Marfa with the same data as the 

 allotype; a male from Puertacitas Mountains, Presidio, Texas, 

 elevation 5100 to 5200 feet, August 30, 1912; and a female from 

 Persimmon Gap, Santiago Mountains, Brewster County, Texas, 

 September 3, 1912, are designated paratypes. All of these speci- 

 mens were collected by Rehn and Hebard. 



The Mexican specimens are typical of this race, as are all the 

 paratypic individuals. The Sierra Blanca specimens (four males, 

 eleven females) are practically typical, occasional individuals 

 showing D. h. haydenii influences. The Marathon series (eight 



