234 PROCEEDINGS OF THE ACADEMY OF [June, 



the same color. Head and pronotum covered with grayish scales. 

 Facial scutellum much swollen, divided by a sulcus. Pronotum 

 large, depressed, much narrowed anteriorly, much dilated poste- 

 riorly, posterior margin transversely arcuate. Elytra surpassing the 

 pronotum very much, leaving the last two abdominal segments 

 exposed, broader than pronotum, testaceous, flat; lateral field deflexed ; 

 narrow, reflexed interiorly, divided by a thick, luteous longitudinal 

 vein, marginal half (base and extremity excepted) blackish; dorsal 

 field very broad, posterior margin broadly rounded, margins reddish; 

 speculum very large, subtrigonal, posterior margin arcuate, anterior 

 angle hidden under pronotum, entire disk irregularly folded like a 

 fan and divided by a rectangular vein. Feet reddish, covered with 

 whitish scales; femora heavy. Posterior tibiae mildly arcuate, above 

 flat, acutely rounded, thickly armed with minute teeth. Internal 

 spurs: intermediate equal to one-third of the metatarsus; upper 

 short, shorter than lower, equalling or exceeding half the length of 

 the intermediate. External spurs very small: upper little longer 

 than lower, removed from the intermediate spur. Metatarsus 

 posteriorly compressed, having two series of denticulations above. 

 All of the tarsi black at apex. Apical portion of abdomen attenuate 

 black. Supra-anal plate minute, transverse, deflexed, divided by a 

 sulcus. Subgenital plate elongate, covered with hairs, the apex 

 forming two denticulations. Cerci long, reddish. 



"o*. Length of body 9; pronotum 3.7, width 3; tegmina beyond 

 pronotum 2.9, width 3.8; caudal femora 5 millimeters." 



Remarks. — No specimens of this species are available for study. 

 We have included the genus and species to make our study of the 

 group complete for the forms found north of Panama. 



