MORGAN HEBARD 399 



caudal margin of disk very weakly obtuse-angulate produced. Tegmina 

 overlapping as in viridipes, slightly longer than pronotum, ovate, with apex 

 broadly rounded. Wings greatly atrophied, but retaining the character- 

 istic folding of the radiate field. Prosternal spine small, blunt conical. 

 Furcula as in viridipes, represented by two minute projections, the areas 

 from which they spring perceptibly thickened and separated by a broad 

 angulate emargination. Supra-anal plate as in viridipes, shield-shaped, 

 slightly longer than basal width, with a decided medio-longitudinal sulcus 

 in proximal half, lateral portions broadly concave, distal portion slightly 

 raised and very weakly concave, bounded laterad by the rounded parallel 

 disto-lateral carinae. Cerci slightly over twice as long as proximal width, 

 tapering gradually in proximal half to narrowest point, where it is half as 

 wide as the basal width, thence expanding slightly, the convexity of the 

 dorsal margin slightly the greater, to the rounded distal angles; rather 

 broadly truncate, weakly oblique at apex. 39 Subgenital plate small, taper- 

 ing to the distinct apical tubercle, which is twice as broad as thick. 40 



Allotype. — 9 ; same data as type. [Hebard Collection.] 

 Similar to females of viridipes, differing in the slightly more sulcate fasti- 

 gium of vertex and frontal costa, with lateral margins slightly more distinct, 

 as described for the male type of this species. Differing from the male in 

 the larger size, more robust form and (usually 41 ) more ample tegmina. Pro- 

 sternal spine short and heavy, very blunt conical. Ovipositor valves as in 

 viridipes, moderately elongate, the dorsal pair with distal curvature weak, 

 the ventral pair with such curvature very weak. 



Measurements (in millimeters) of extremes 



West Point, New York 

 (3) 



Collison Ridge, Vir- 

 ginia, type 



Collison Ridge, Vir- 

 ginia, paratypes, (5) ] 



White Sulphur Springs 

 West Virginia, (2) . . 



39 Slight variation in the length and degree of narrowing as well as in the 

 arcuation of the margins of the cerci is shown by the males before us; the 

 type, however, being readily recognizable. 



^In one paratype slight bituberculation is shown. 



41 Decided tegminal size variation is shown by the series before us. 



TRANS. AM. ENT. SOC, XLVI. 



Length of 

 body 



Length of 

 pronotum 



Caudal 

 width of 

 pronotal 

 disk 



Length of 

 tegmen 



Length of 



caudal 



femur 



17-17.5 



4-4.1 



2.3-2.4 



4.8-5.6 



9.6-9.7 



17.5 



4.6 



2.7 



5.1 



9.7 



5.8-17.5 



4.2-4.3 



2.4-2.8 



4.8-5 



9.4-10 



16-16.8 



4-4.2 



2.4-2.6 



5-4.8 



6.2-9.6 



