1908.] NATURAL SCIENCES OF PHILADELPHIA. 19 



liquely truncate with the apex rounded rectangulate. Wings fully- 

 developed. Prosternal spine erect, rather slender, hardly tapering, 

 bluntly pointed. Interspace between the mesosternal lobes broad 

 cephalad, sharply narrowed to about a third the cephalic width, then 

 slightly and regularly expanded with the caudal angles of the lobes 

 rounded, the whole shape of the interspace being like a letter X with the 

 upper portion abnormally expanded and the lower portion drawn out; 

 interspace between the metasternal lobes narrow, inverted, cuneiform. 

 Abdomen moderately compressed ; supra-anal plate produced subequal 

 in width in the proximal half, distinctly narrowed mesad and thence 

 arcuate to the rather blunt apex; cerci slender, subequal in the proximal 

 half, roundly emarginate on the dorsal margin in the distal half, the 

 apex blunt, the distal fourth seen to be distinctly arcuate mesad when 

 viewed from the dorsum; subgenital plate acute scaphiform, the apex 

 acute-angulate, and the lateral portions of the plate distinctly con- 

 stricted proximad, ventral aspect with a distinct median keel. Cephalic 

 and median hmbs rather slender. Caudal femora about two-thirds 

 the length of the tegmina, the greatest width contained about foiu* 

 times in the length, dorsal carinse serrato-dentate, pattern of the 

 paginae well impressed, genicular lobes acute; caudal tibiae slightly 

 shorter than the femora, lateral margin with nine spines one of which 

 is quite small and apical, internal margin with ten spines, one apical; 

 caudal tarsi comparatively short and with the pulvilli large. 



General color prout's brown, tawn3''-olive ventrad and tending 

 toward seal brown on the dorsum of the head, disk of the pronotum 

 and proximal portion of the tegmina. Head with the face washed with 

 walnut brown, several pale bars crossing between the labrum and 

 median ocellus; labrum ochre; sides of the head ventro-caudad of the 

 eyes washed with seal brown; eyes russet; antennae wood brown dorsad, 

 Vandyke brown ventrad with the tip blackish. Pronotum shghtly 

 touched laterad with walnut brown. Tegmina sprinkled rather 

 sparingly with small subquadrate maculations of seal brown; angle of 

 the anal field rather pale. Wings transparent, tinted with pale 

 brownish. Caudal femora with an obscm-e pregenicular annulus of seal 

 brown, tubercles on the carinse and pattern of the paginae blackish; 

 caudal tibiae with the spines maize yellow with seal brown tips. 



Measurernents. 



Length of body, 28.2 mm. 



Length of pronotum, 6 " 



Greatest caudal width of pronotum, 4 " 



Length of tegmen, 24.8 " 



Length of caudal femur, 15.8 " 



