378 NEW NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



margins showing very faint convexity, medio-longitudinal sulcus deep in 

 proximal third, weak beyond, lateral portions of plate with surface rather 

 strongly but broadly concave, disto-lateral carinae stout, parallel, about 

 twice as long as broad, their distal extremities causing the lateral margins 

 to project slightly at the point of juncture on each side. Cerci very broad, 

 greatest breadth almost equal to length, due to the production ventrad of 

 the proximal section; dorsal margin straight to the rounded apex, ventral 

 margin rather strongly convex, this becoming more decided toward end of 

 proximal three-fifths, thence very feebly convex to the apex, in this way an 

 obtuse-angulate emargination is formed at the end of the proximal three- 

 fifths; proximal portion of cercus with surface deplanate, vertical distal 

 portion bent inward, with surface broadly and transversely concave (not 

 longitudinally and deeply concave as in typical rileyanus). Subgenital 

 plate with free margin in dorsal aspect of equal convexity throughout, show- 

 ing sub obsolete bituberculation mesad (weak to obsolete in the series), on 

 each side of which the margin shows feeble concavity for a brief distance. 



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



Agrees with type except in the following respects. Size larger, form rather 

 slender (for females of the majority of the species of the brachypterous Mel- 

 anopli). Sulci of vertex and frontal costa weaker and broader. Eye about 

 twice as long as infra-ocular sulcus. Pronotum with sulci and carina even 

 less decided, the lateral margins of the disk showing no greater divergence 

 caudad. Ovipositor valves with apices moderately curved. 



Measurements (in millimeters) of extremes 



Caudal 



width of Length of 



Length of Length of pronotal Length of Width of caudal 



body pronotum disk tegmen tegmen femur 



& 



Type 14.2 3.5 1.9 2.8 1.9 9 



Paratopes (13).. 14.2-15.8 3.3-3.6 1.9-2 2.7-2.9 1.8-2 8.6-9.2 



9 



Allotype 19.5 3.9 2.6 3.1 2.1 10.1 



Paratypes (15).. 18.5-22.5 3.8-4 2.4-2.7 3.1-3.4 2-2.3 9.8-11 



Head avellaneous, dorsal surface suffused wood brown, with rather broad 

 postocular bars of shining blackish brown on each side. Pronotum with 

 disk suffused wood brown; lateral lobes with a rather broad dorsal band of 

 shining blackish brown, which in the metazonal section is dull and paler, 

 bone brown, remaining ventral portions of lateral lobes vinaceous-fawn. 

 Tegmina with narrow dorsal section avellaneous, lateral section somewhat 

 glossy bone brown. Abdomen dorsad cinnamon-buff, the proximal tergites 

 marked heavily laterad with sharply defined areas of shining blackish brown. 

 Ventral surface chamois, shading to cream buff distad on abdomen, slightly 

 suffused with fawn color on sternum. Cephalic and median limbs fawn 

 color, somewhat mottled. Caudal femora cinnamon-buff suffused with 

 army brown, dorsal surface with a proximal area and two bands of bone brown, 



