184 NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



moderately in slightly over proximal half, remainder spatulate, expansion 

 moderate with dorsal and ventral margins rounding into the truncate distal 

 margin, the external surface in that section impressed. Penis as character- 

 istic of the species ; tubular section with a wide meso-caudal cleft, the dorsal 

 margins forming two heavy dorsal (apical) lobes (the dorsal lobes) which 

 do not surpass the lateral margins; from within project for some distance 

 two fleshy, divergent fingers (the proximal pair of parameres), each having 

 a delicate vertical lamella on its caudal surface which terminates abruptly 

 proximad above the erect, usually concealed, elongate, vertical, plate-like 

 pair of parameres, the apex of each being chitinous and concave. Sub- 

 genital plate ample, produced mesad to a sharply rounded apex. 



Allotype. • — $ ; same data as type. [Hebard Collection] . 



Longer and more robust than male. Organs of flight fully as caudate. 

 Ovipositor apices short, the dorsal pair strongly recurved, dorsal surface with 

 distal portion concave, its lateral margins sharply raised and a similar 

 cutting transverse ridge joining them and separating the distal from the 

 flattened proximal dorsal portion. 



General coloration primuline yellow (a buffy yellow) in Weatherford 

 series, all but one from Palo Pinto County and specimen from Hill 

 County, Texas. Head and cephalic limbs immaculate except for mere 

 traces of a postocular suffusion and a disto-external fleck of dark brown 

 on median femora. Pronotum with lateral lobes showing a dorsal line and 

 two sulci for some distance brown (this the remaining traces of a broad 

 postocular bar). Caudal femora with dorsal carinae and ventro-external 

 carina distad with scattered dark brown dots, internal portion of dorsal 

 surface with three dark brown suffused areas (the remnants of broad 

 transverse bands) and distal arch and base of genicular areas dark brown. 

 Tegmina pale and vitreous distad. Caudal femora internally and ventrad 

 more richly colored, light orange yellow. 



The male from Kingfisher County, Oklahoma, and the female 

 from Colorado County, Texas, are decidedly less yellow, a dull 

 buffy yellow, with broad but broken postocular bar on pronotal 

 lateral lobes and transverse bars on dorsal surface of caudal 

 femora incomplete but suggested throughout. 



A male from Palo Pinto County, Texas, is similar but dirty 

 buff in general coloration. 



All of the other specimens (including Morse's series from 

 Wichita Falls) are more like the latter, or generally buff tinged 

 with tawny or wood brown, the postocular bar varying from 

 faintly suggested to nearly solid but never as conspicuous as in 

 typical foedus fluviatilis, the dorsal transverse bars of caudal 



