REHN AND HEBARD 163 



EE. Cerci with cUstal portion not at all or very weakly depressed, 

 with apex narrow, acuminate. (Eyes normal. \'entral margins of 

 caudal femora unarmed.) 



F. Vertex broad and blunt, very weakly ascending, sides strongly 

 divergent. 8ize mediimi to slightly smaller. 



G. Form distinctly robust. Vertex with greatest width slightly 

 greater than that of proximal antennal joint. '^ Convex callosity 

 of lateral lobes moderately broad. General color dark brown, 

 occasionally washed with green, veins and veinlets of tegmina 

 pale and conspicuous. Tegmina broad at apex, tympanum of 

 same luiusuallj' large. Cerci shoii, distal portion short, conical, 

 with blunt apex not at all depressed. nemoralis (Scudder) 



GG. Form moderately robust. Vertex with greatest width 

 averaging about one and three-fourths times that of proximal 

 antennal joint which is unusually small. Convex callosity of 

 lateral lobes very broad. General color dark bro-^vn or bright 

 green, abdomen uniformly dark or very dark meso-dorsad with 

 a dark line on each side, veins of tegmina not conspicuous. 

 Tegmina not broad at apex, tympammi of same unusually small. 

 Cerci similar to those of ne?noral(S but with distal portion more 

 produced, elongate, attenuate, almost imperceptibly or not at 

 all depressed, with apex more acuminate. 



occidentalis (Morse) 

 FF. Vertex very broad and exceedingly blunt, not at all ascending, 

 sides very strongly divergent, (greatest width about one and one- 

 half times that of proximal antennal joint). Size large to very 

 large. (Form robust. Convex callosity of lateral lobes very 

 broad. Dorsum of abdomen infuscated except in very pale 

 examples. Tegmina broad at apex. Cerci of same general type 

 as those of nemoralis but with distal portion very greatly pro- 

 duced, very elongate and attenuate, very weakly depressed distad, 

 with apex strongly acuminate.) strictus (Scudder) 



' DD. Cerci with mesal portion very contrastingly swollen, (this portion 

 elongate ovate, distal portion moderately produced and very weakly 

 depressed, apex sharply rounded. Size rather large, form distinctly 

 attenuate. Vertex not ascending, sides strongly divergent, greatest 

 width slightly greater than that of proximal antennal joint. Eyes 

 normal. Lateral lobes of pronotum very broad, convex callosity of 

 same very broad. Abdomen immaculate, with distal portion, including 

 cerci, pale yeUow. Ventral margins of caudal femora unarmed.) 



resacensis new species 



^^ One male of C. nemoralis is before us having the vertex unusually narrow, 

 not as wide as the basal antennal joint. Though this character is of decided 

 importance in the species of the present genus, the above instance shows that, 

 no matter how constant a single character may appear to be. occasional speci- 

 mens are sui-e to be found in which the variation from the normal is decided. 



TRANS. AM. ENT. SOC, XLI. 



