232 PKOCEEDINGS OF THE ACADEMY OF [May, 



long as deep, somewhat impressed ventrad; ventro-cephalic angle 

 broadly rounded, ventral margin arcuate, ventro-caudal angle 

 rounded obtuse and broadly lamellato-cingulate, the other margins 

 rather narrowly cingulate. Tegmina surpassing the tips of the 

 caudal femora by about the length of the pronotum; when seen from 

 the dorsum the lateral borders of the dorsal fields of the tegmina 

 regularly converge distad: lateral field of uniform depth in the proximal 

 third, thence regularly narrowing distad; mediastine vein with five 

 rami; lateral field with five proximal free veins; hyaline intercalated 

 field very elongate, reaching to the proximal third of the lateral 

 field: dorsal field rather narrow, five times as long as greatest 

 breadth, regularly narrowing in distal half; between the median 

 and the short anal vein there is but a brief section of the ulnar vein 

 which is distinctly traceable, all the other longitudinal nervures 

 irregular and sinuate, the cross-veins irregularly distributed and 

 oblique sectors not clearly defined; anal and the two axillary veins 

 oblique, straight, regularly disposed, connected by numerous cross- 

 veins. Wings surpassing the tegmina by slightly more than the 

 length of the pronotum. Cerci very slender, elongate, reaching 

 almost to the tips of the wings, clothed with numerous, rather 

 adpressed, short hairs and sparse, erect, long hairs, decurved: sub- 

 genital plate elongate scaphiform, subcompressed, with a deep 

 medio-longitudinal sulcus on the ventral surface; distal margin 

 U-emarginate. Limbs moderately slender, third joint of tarsi 

 slender. Cephalic tibiae with an elongate elliptical foramen on the 

 cephalic face, caudal face imperforate. Caudal femora moderately 

 slender, about two-thirds as long as the tegmina: caudal tibiae very 

 faintly shorter than the caudal femora; dorsal surface armed distad 

 as follows: on external margin with five major spines, on internal 

 margin with six, those of the internal slightly longer than those 

 of the external; the intercalated spinulations placed, on external 

 margin^ — 3 (or 4), 4, 2, 1, on internal margin — 1, 2 (or 3), 2, 1, 0; 

 dorso-internal distal spur over twice as long as the ventral, almost 

 as long as the metatarsus; external distal spurs short : caudal metatarsi 

 armed on the dorso-external margin with a single (distal) spinula- 

 tion, on the dorso-internal margin with three spinulations, metatarsal 

 spurs very long, the internal slightly longer than the external, 

 faintly arcuate when seen from the side, arcuate proximad 

 when seen from the dorsum. 



Allotype: 9 ; same data as type. [Acad. Nat. Sci. Phila.] 

 Differing from the description of the male (type) in the following 



