248 NORTH AMERICAN OEDIPODINAE (ORTHOPTERA; ACRIDIDAE) 



Type. — 9 ; Katherine, Willacy County, Texas. August 8, 

 1912. (Rehn and Hebard; in nearly bare white sand gully.) 

 [Hebard Collection, Type no. 499.] 



Allotype. — d^ ; same data as type. [Hebard Collection.] 



Description. — Size larger than in P. /. fenestralis: form elongate. Head 

 with occiput more appreciably ascending than in P. f. fenestralis, with head 

 in normal position; vertex in profile more narrowly rounded, the juxta-ocular 

 portions of the fastigial marginal carinae more evident in same view; in 

 profile the f astigum is seen to be slightly more declivent : in cephalic aspect the 

 head is seen to be more compressed and proportionately deeper: antennae 

 heavier, very elongate, at least two and one-half times as long as pronotum, 

 distinctly though not decidedly ensiform, the greatest expansion distinctly 

 greater than width of the proximal joint. Pronotum in profile with the median 

 carina subconcave in the region of the principal transverse sulcus, not straight, 

 as a whole lower throughout than in P. f. fenestralis: lateral lobes with ventro- 

 caudal angle having a distinct, slightly swollen, peg-like projection instead of 

 an angulation of the margin. Tegmina with the distal extremity oblique, 

 moderately truncate, not essentially rounded as in P. f. fenestralis. Dorsal 

 ovipositor jaws in dorsal view no more slender than in P. /. fenestralis, in lateral 

 view more elongate and regularly falciform distad of the shoulder, slender: 

 ventral ovipositor jaws in ventral view slightly more elongate than in the 

 typical form of the species, in profile as elongate, correspondingly, as the dorsal 

 pair, much straighter than in P. /. fenestralis and more acute. 



Coloration not distinctively different from P. /. fenestralis. 



Measurements {in millimeters) 



■71 Length of Length of Length of Length of Length of 



O body antenna pronotum tegmen caudal femur 



P. fen. fenestralis 



Wood's Hole, Mass 16.8 13.7 3.5 IS 11 



Isle of Palms, So. Car 20.8 14.2 3.9 21.2 12.5 



Ship Island, Mi.ss 18.2 13 3.6 19.5 11 



P. fen. fenestralis X 



P. fen. frater 



Hearne, Texas 20.7 12.5 4 21.5 12.5 



P. fen. frater 



Galveston, Texas, paratype 23 



Katherine, Texas, allotype . 24 



9 



P. fen. fenestralis 



Wood's Hole, Mass 23 .5 



Isle of Palms, So. Car. .... 27 .2i» 



Ship Island, Miss 23 .8 



