182 ORTHOPTEROUS GROUP INSARAE 



margins of the pronotum more or less edged with pompeian red to 

 Vandyke red, varying in depth and width on different parts of the 

 margins and also individually, occasionally almost no trace of this 

 red being present and again in the other extreme very strongly 

 indicated, these margins always beaded with hoary white, alternat- 

 ing with the reddish; lateral lobes of the pronotum, in the highly 

 colored specimens, more or less stippled with the reddish color 

 cephalad and caudad, occasionally this being over hoary white; a 

 very faint irregular and broken indication of the postocular marking 

 of the head present on the pronotum at the lateral margins of the 

 disk. Tegmina with the stridulating field broadly marked with 

 bay along the anal vein, rarely the greater portion of the whole 

 field weakly washed with the same; tips of the veins adjacent to 

 the sutural margin occasionally touched with paler green than the 

 general color or even with whitish. Wings with exposed portion 

 washed proximad along the veins with pomegranate purple. Pleura 

 very rarely with a pair of ovato-quadrate spots of vandyke red. 

 Limbs with the femora frequently more or less washed with pom- 

 peian red to Vandyke red, particularly the median pair, all of the 

 femora generally sprinkled with small hoary white areas. Oviposi- 

 tor with the distal margins and teeth blackish brown. 



Distribution. — The present species is only known from southern 

 Texas, its range extending at least as far north as San Diego, Duval 

 County, northwest to Carrizo Springs, Dimmit County and south 

 as far as Ringgold Barracks, Starr County. Its vertical range is 

 limited, extending from near sea-level at Katherine to about 800 

 feet elevation at Carrizo Springs. 



Biological Notes. — At Katherine, in the sandhill region, the pres- 

 ent species was found uncommon in tall grasses and weeds and also 

 in the scrub oak (Ouercus virginianus) areas. At Benavides it was 

 occasional in cleared old pasture, which was much overgrown with 

 various very dry and not very dense weeds. Here the insects 

 would, when frightened, flutter in a ghost-like fashion from one 

 clump of brush io another, which action suggested the specific 

 name. In the same situation at Benavides, A. gracilipes was also 

 found. 



From the dates with the material, the present species would 

 seem to mature as early as May and also be found in that condition 



