62 



NEW NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



Furcula represented by two minute projections, with bases weaky convex 

 to base of their tergite, the projecting portions slightly longer than wide. 

 Supra-anal plate shield-shaped, with lateral margins proximad straight and 

 parallel for a short distance, then moderately raised, very weakly concave and 

 convergent to the short, thick, weakly elevated disto-lateral carinae, the small 

 apical portion triangular with apex bluntly rounded. Surface of supra-anal 

 plate broadly concave laterad, with a broad medio-longitudinal sulcus in 

 proximal half, which is very weak (absent in paratype) in distal half. 



Cerci nearly two and one-half times as long as basal width, straight, narrow- 

 ing gradually, then expanding, so that the distal third is slightly enlarged with 

 dorsal margin slightly more convex than ventral margin, apical portion with 

 external surface weakly concave, broadly rounded dorso-distad, but forming 

 a moderately (sharply, in paratype) rounded rectangulate disto-ventral angle, 

 the distal margin transverse. Subgenital plate produced meso-dorsad in a 

 large, bluntly rounded tubercle, directed caudad, which tubercle is slightly 

 more produced and less heavy than in femur-nigrum. 



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

 Agrees with type except as follows. Size larger, form more robust. Sul- 

 cation of vertex and frontal costa weaker and broader. Eye about one and 

 two-thirds times as long as infra-ocular sulcus. Pronotum with lateral 

 margins of disk weakly divergent to principal sulcus. Prosternal spine heavier 

 toward its base. Ovipositor valves moderately elongate, with distal curvature 

 rather broad; the dorsal valves with dorsal surface and margins proximad 

 rather well supplied with serrations. 



Measurements (in millimeters) 



Length Length Caudal Length Width Length 



of of width of of of of 



body pro- pro- tegmen tegmen caudal 



(j notum notal femur 



disk 



Type 20.2 4.7 2.8 5 2.8 10.8 



Paratype 19 15 4.6 2.7 4.9 2.6 10.7 



9 



Allotype 24 5.3 3.9 5.9 3.4 12.7 



Dorsal surface of male blackish chestnut-brown; the lateral margins of the 

 pronotal disk outlined in buffy to the principal sulcus in the paratype (a 

 frequent color feature in species of this group). Other portions of head, 

 ventral portions of pronotal lateral lobes, cephalic and median limbs and under- 

 parts clay color, often with an olivaceous tinge; the head with a broad shining 

 postocular black bar, which broadens and is continued on the lateral lobes of 

 the principal sulcus. Lateral portions of thorax blackish, with a striking, 

 oblique bar of light buff. Sides of abdomen heavily overlaid with shining 

 black, this narrowing strongly caudad. 



15 Estimated, the abdomen being curved upward in this specimen. 



