MORGAN HEBARD 83 



Subgenital plate with surface weakly convex, except disto-laterad towarci base of 

 styles, where it is weakly concave, free margin briefly produced and straight lat- 

 erad, then in lateral third of remaining portion, on each side, moderately concave, 

 the remaining distal third nearly transverse, showing a weak concavity and a very 

 slightly greater dextral production of the plate; at the disto-lateral angles thus 

 formed are situated, in sockets whose dorsal surfaces are weakly raised on the dorsal 

 surface of the plate,"' simple, slender styles, similar in size and form and in length 

 equalling two-fifths the distance between their bases. Exposed portion of eighth 

 dorsal abdominal segment, which is folded over the base of the subgenital plate, 

 short, no longer than the exposed portion of the seventh ventral abdominal segmenl. 

 Characters of Female. — (Tv/^f. Johnstone, Valverde County, Texas.) Size small, 

 not as compact as in hoUiana. Head larger and more convex than in male. Inter- 

 ocular space considerably wider than that between antennal sockets; minute ocellar 

 spots present. Maxillary palpi short and stout. Pronotum proportionately longer 

 than in bolliana. Tegmina elongate, lateral pads, with apices rounded, widely sep- 

 arated, reaching base of median segment, surface with veins appreciable, weakly 

 convex to marginal field, which is weakly concave, with costal margin cingulate. 

 Wings represented by small, vestigial pads, falling distinctly short of the tegminal 

 apices. Supra-anal plate triangularly produced, free margins at bases of cerci 

 showing a very broad and weak triangular production, thence concavo-convergent 

 to the slightly blunted apex. Cerci very short, lateral margins entire, with dorsal 

 surface weakly convex. Subgenital plate convex, little produced, with free margin 

 rather weakly convex. 



Measurements {in millimeters) 



^. Length of Length of Width of Length of Width of 



O body pronotum pronotum tegmen"' tegmen 



Shovel Mountain, Texas (2) 12-12. 2 2.8 :■,.% 11. 2-1 2 3 6-3 -7 



Rio Frio, Texas 13.5 31 4-1 12.3 3.8 



Sabinal, Texas (2) 11. 3-13. 3 3.1-31 4-41 12-12. 7 3.9-4 



Chisos Mountains, 



Texas (2) 13. 2-13. 8 3-2-3.3 4-4-3 I3-6-I4-5 4-6-4-8 



9 



Johnstone, Te.xas, type . 9.5 3 4.2 3 2.1 



Fort Davis. Texas (2) 1 2-1 1.5 3 2-3.6 4 4-4-8 3-5-3-4 2.3-2.3 



Chisos Mountains.Texas 11. 6 3.3 4.7 3.4 2.2 



The type was taken in a relatively bare area of reduced \egeta- 

 tion, which probably accounts for its small size and certainly 

 explains its pale coloration. The other females are all from more 

 mountainous localities, these regions showing generally a decidedly 

 less reduced vegetation. 



"' This convexity is slightly more pronounced at the dextral socket. 

 "* The length of the exposed portion of the female tegmen is given. 



MEM. .\M. ENT. SOC, 2. 



