236 NORTH AMERICAN OEDIPODINAE (ORTHOPTERA; ACRIDIDAE) 



. General pale tone of dorsal coloration varying from pale tilleul-buff, through 

 pinkish buff to vinaceous-pink, the face, genae, much of the lateral lobes, 

 portions of pleura and pale areas on cephalic and median limbs and on external 

 face of caudal femora hoary white. Darkened markings of occiput, pronotum, 

 tegmina and limbs ranging from bister to inummy brown: on the pronotum 

 this is usually restricted to a darker edging at the irregularly angulate junction 

 of the hoary ventral portions and colored dorsal section, this brown edging 

 occasionally being isolated from the dorsum of the pronotum by additional 

 hoary white, which in a single specimen (one female; Mason, Nevada) includes 

 most of the dorsum ; occasionally the dorsum and much of the pronotal lateral 

 lobes is somberly uniform brownish (both Mina females) ; tegmina with dark 

 maculations relatively small and quadrate, frequently weakly grouped into 

 two principal transverse bands, one proximal and the other mesal, the proximal 

 the more solid, the intervening pale areas and distal section with scattered 

 maculations, which show tendencies, when grouped at all, to assemble along 

 the sutural margin and the humeral trunk. In the dully colored individuals 

 from Mina and several weakly contrasted specimens from Mason, the tegmina, 

 and for that matter the pronotal markings, are little evidenced. Wings with 

 disk varying from very pale napthaline yellow to pale citrine yellow, the color 

 never decided and dilute peripherad; distal portion clear hyaline except for 

 vein infuscation; wing band ranging from the faintest trace in a relatively few 

 cells, with no spur, to a fairly well-marked and moderately broad band, with a 

 connected, well-marked spur, extending half way to wing base, the band be- 

 coming obsolescent periphero-proximad; in color the band ranges from raw 

 umber to mummy brown. Rarely a distinct band and a well indicated spur are 

 present but not connected. Eyes ranging from ochraceou.s-orange through 

 buckthorn brown and tawny to dresden brown and mummy brown. Antennae 

 whitish pink, broadly annulate with blackish brown, this condition subobsolete 

 distad. Cephalic and median limbs annulate with blue-black (intensive) to 

 fuscous (recessive) ; caudal femora with the dark bars of similar color, oblique 

 on external face and there occasionally incomplete, distinct dorsad. Caudal 

 tibiae pale, external face with a distal, a pre-median and a proximal darkening 

 of variable intensity and definition, internal face faintly washed with pale 

 Veronese green to glaucous l^lue, increasing in intensity distad. Venter and 

 abdomen light buff to light ochraceous-buff, the surface often with niuncrous 

 scattered small blotches of buckthorn brown. Dorsum of abdomen proximatl 

 french green to empire green. 



The Mason series is, as a whole, sharply, brightly and contrastingly colored ; 

 the Mina representation is duller, the females quite dull, with little contrast, 

 while the male is more contrasted, but duller than the Mason specimens. The 

 extremes of wing l:)and condition are found in the Mina males. 



