208 STUDIES IN AMERICAN TETTIGONIIDAE (ORTHOPTERA) 



men is amber brown with cerci slightly paler and more buffy; in 

 the female, the abdon:ien is mahogany red with narrow and much 

 interrupted dorso-lateral paler bands weakly suggested while the 

 ovioositor is cinnamon brown. 



Lateral lobes of pronotum moderately large with ventral 

 margin and particularly ventro-caudal angle distinctly curved 

 outward; cephalic margin broadly convex, with ventro-cephahc 

 angle subobsolete, to the very sharply rounded ventro-caudal 

 angle which is distinctly less than 90°, caudal margin nearly 

 straight, almost imperceptibly convex, to the very weakly defined 

 humeral sinus, convex callosity very narrow, subobsolete. 



But seven of the series of sixty-five specimens here recorded 

 are macropterous. 



The male cerci are of a type almost intermediate betw^een those 

 of C. nigropleurum and C. spartinae; when compared with those 

 of the latter species they are seen to be decidedly more ample and 

 somewhat heavier, with tooth slightly heavier and directed proxi- 

 mad at a sharper angle; the externo-lateral margin is more con- 

 cave than in either of the above species. An abnormality, which 

 we have never before seen, is found in a single male from Corn- 

 wells, Pennsylvania; this specimen is adult, but the cerci have 

 remained as in the instar preceding maturity. 



The ovipositor is very gently curved upward, tapering very 

 gently distad to the sharp apex, with greater portion of dorsal 

 margin and distal portion of ventral margin supplied with widely 

 spaced microscopic serrulations, a condition not found in any 

 other species of the present genus here considered, but the normal 

 condition in the genus Orchelimum. The ovipositor length is as 

 follows: Cornwells, Pennsylvania, 24.6-27.5; Vigo County, In- 

 diana, 23.4-26.2; West Point, Nebraska, 19.9-26.3; Lincoln, 

 Nebraska, 25.4-27.8 mm. 



The genicular areas of the caudal femora are not darkened and 

 the genicular lobes of the same are normally strongly bispinose, 

 occasionally unispinose. The caudal femora are long and slender 

 and have the ventro-external margins armed as follows in 54 

 perfect specimens examined: 



Number of spines, 0-0 0-1 2 1-1 1-2 1-3 1-4 2-2 



Number of specimens, 3 2 2 4 10 4 1 5 



