226 PROCEEDINGS OF THE ACADEMY OF [Maj', 



over the greater portion of the length of the disk, not reaching either 

 margin, more distinctly indicated cephalad: lateral lobes subquad- 

 rate, ventral margin truncate, cephalic margin oblique, sub-truncate, 

 ventro-cephalic angle rounded obtuse, caudal margin straight, ven- 

 tro-caudal angle broadly rounded rectangulate; impression of lateral 

 lobes moderately inchcated, oblique, appreciably in bent ventro-cau- 

 dad. Tegmina relatively broad, the greatest width of the disk con- 

 tained about two and one-half times in the length of the same, when 

 in repose the greatest width across the dorsal fields of the tegmina is 

 at three-fifths the length of the tegmina, the margin of the extremity 

 of the field weakly acute-angulate : lateral field moderately broad, 

 subequal in width ; mediastine vein moderately but regularly diverg- 

 ing from the humeral vein in proximal half, thence subparallel or 

 weakly converging distad; two free veins present cephalad of the 

 proximal half of the mediastine vein: humeral vein prominent and 

 straight for the greater portion of its length, sharply decurved at its 

 apex; discoidal vein in general paralleling the humeral vein, obtuse- 

 angulate at the distal four-fifths; stridulating vein strongly but not 

 regularly arcuate; axillary veins two in number, post-axillary veins 

 three in number; ulnar vein stronglj^ arcuate in proximal three- 

 fourths; speculum oblique sub-rectangulate, the proximal angle and 

 the distal angle rectangulate, the costal angle weakly obtuse, the 

 sutural angle rounded, the greatest (transverse) Avidth of the specu- 

 lum subequal to the length, figure of the speculum complete, follow- 

 ing the costal outline less distinctly than the others. Wings with the 

 caudate section but slightly shorter than the tegmina, well haired 

 along the dorsal and ventral margins. Subgenital plate relatively 

 small, narrowing distad, the distal margin rather sharply and deeply 

 bisarcuate: styles slightly surpassing the apices of the caudal femora, 

 tapering, robust proximad. Cephalic femora moderately robust, 

 tapering, in length subequal to the head and pronotum combined; 

 cephalic tibise subequal to the femora in length, the proximal five- 

 eighths distinctly inflated, the distal section relatively slender, tym- 

 panum of the cephalic face large, elongate subelliptical, of the caudal 

 face distinctly smaller, sub-elliptical. Median limbs missing. Caudal 

 femora faintly longer than the tegmina, moderately robust proximad, 

 regularly tapering, very slender distad ; caudal tibise subequal to the 

 femora in length, slender, the marginal spurs of the same number 

 and disposition as in the other new species of the genus here de- 

 scribed; disto-external spurs small, the dorsal one very small, hardly 

 more than a third the length of the median one, the ventral spur 



