294 NEW NORTH AMERICAN MELANOPLI (oRTHOPTERa) 



or due merely to individual variation. The series now at hand 

 is constant in these differences, sufficient in our opinion for full 

 specific separation. 



Type. — cf ; Billy's Island, Okeefenokee Swamp, Charlton 

 County, Georgia. July 16 to 19, 1917. (M. Hebard.) [Hebard 

 Collection, Type no. 515.] 



Size large, form robust but graceful. Fastigium of vertex feebly sulcate, 

 frontal costa subsulcate except at median ocellus; as in furcatus. Antennae 

 elongate, nearly twice as long as pronotum. Eye large, longer than cheek, 

 twice as long as infra-ocular sulcus. Pronotum as in furcatus; medio-longitu- 

 dinal carina distinct but not well developed on prozona, well developed on 

 metazona, cut by sulci; lateral margins of disk distinct, rounding into the 

 almost vertical lateral lobes; caudal margin of disk obtuse-angulate produced 

 with angle rounded but rather sharp. Tegmina and wings almost reaching 

 apex of abdomen.^ Distal portion of abdomen enlarged. Furcula indicated 

 as weak convexities on the segment from which these appendages spring when 

 present,^^ the segment between these broadly angulate emarginate. Supra- 

 anal plate as in clypeatus; very broadly shield-shaped and minutely triangularly 

 produced meso-distad; medio-longitudinal carina deep and narrow in proximal 

 two-thirds, thence weak, laterad of which sulcus the plate is broadly concave. 

 Cercus moderately heavy, narrowing rather strongly to mesal portion, thence 

 widening as strongly, strongly furcate ; dorsal portion of furcation nearly twice 

 as long as broad, with surface weakly concave, lateral margins feebly convex, 

 subparallel and apex truncate with angles rounded; ventral portion of furca- 

 tion distinctly longer than dorsal portion, broader at base, tapering evenly to 

 the bluntly rounded apex, the dorsal portion of this margin, particularly distad, 

 (frequently) sublamellate. Subgenital plate as in furcatus; moderately shallow, 

 free margin briefly ascendant beyond cereal apices to the apex, which is slightly 

 elevated in consequence, truncate, over twice as broad as high. Limbs as in 

 furcatus. 



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



Size larger, form more robust than male, averaging not quite as heavy as in 

 females oi furcatus. Fastigium of vertex broader and scarcely concave. Teg- 

 mina and wings reaching base of supra-anal plate. ^"^ Ovipositor valves much 

 as in furcatus ; dorsal valves moderately recurved, ventral valves very weakly 

 decurved. Limbs proportionately as in males. 



^^ In paratypic males from reaching to slightly beyond base of sui)ra-anal 

 plate, to reaching slightly beyond apex of abdomen. 



^^ In paratyi)ic males varying from practically obsolete (frequent) to having 

 minute angulations caudad of the margin of the segment (one specimen). 



^^ In paratypic females showing very little variation. Two with abdomen 

 pressed out have the abdomen extending considerably beyond the tegminal 

 apices for this reason solely. 



