158 PROCEEDINGS OF THE ACADEMY OF [May, 



larly arcuate, the extensor margin faintly sinuate, apex roundly 

 acute, when seen from the side: antennae slightly surpassing the 

 body in length; proximal joint large, faintly longer than the second 

 and third joints united. Pronotum rounded sub-hexagonal, trans- 

 verse, the greatest length contained one and two-fifths times in the 

 greatest width, which is placed distinctly caudad of the middle: 

 cephalic margin weakly arcuate, passing by broadly rounded angles 

 into the oblique, diverging and appreciably arcuate cephalic portions 

 of the lateral margins, which strongly round into the caudal sections 

 of the lateral margins; caudal margin arcuato-truncate, rounded 

 obtuse-angulate laterad: broad lateral portions of the pronotum 

 weakly declivent. Tegmina lanceolate, greatest width contained 

 about three and one-half times in the length of the same, when closed 

 they surpass the apex of the abdomen by about the length of the 

 pronotum: costal margin in large part straight, gently arcuate in the 

 area of the marginal field, sharply and briefly iarcuate distad; sutural 

 margin in general straight, with a distal oblique, subarcuate third: 

 apex rather narrowly rounded, slightly costal in position; marginal 

 field reaching about to the proximal third, relatively narrow; scapu- 

 lar field very broad, at proximal third of tegmen equal to one-half the 

 entire width of the same, costal veins elongate, straight, oblique, the 

 distal one of the regular series biramose, eleven in number exclusive 

 of the rami of the distal one; discoidal vein furcate distad, one or 

 both forks again furcate; discoidal sectors longitudinal, four to five in 

 number, exclusive of the median vein itself; anal field elongate pyri- 

 form; anal sulcus with its oblique portion nearly straight, reaching 

 the sutural margin at about the proximal third; axillary veins five to 

 six in number. Wings relatively broad: costal margin straight 

 oblique in the greater portion of the proximal half, straight truncate 

 in the region of the costal veins, sharply rounding to the rounded 

 obtuse-angulate apex, which is situated at the apex of the median 

 vein : intercalated triangle distinct, trigonal : mediastine vein simple, 

 with a decided costal clavation at its apex; discoidal vein bifurcate 

 and its divisions again furcate; costal veins ten in number, the distal 

 four of a common origin and hardly clavate, the remainder heavily 

 clavate; medio-discoidal area narrow, dividing into oblong or sub- 

 quadrate areolets by transverse nervures; median vein simple, largely 

 straight; medio-ulnar area subequal to or faintly narrower than the 

 medio-discoidal area, distad more or less completely intersected by 

 transverse nervures; ulnar vein with two complete rami; axillary 

 vein with three rami originating mesad. Supra-anal plate strongly 



