62 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERA) 



emargination; the supra-anal plate of the same sex has its apical 

 angle more acute and median sulcus more pronounced and more 

 continuous in some specimens than in others. The male cerci 

 vary somewhat in robustness and degree of attenuation of the 

 distal third, the teeth being median or disto-median and, while 

 short, strongly uncinate. The male sex has the subgenital 

 plate with the margin varying from subtruncate to rectangulate 

 emarginate, the majority of individuals having this portion 

 obtusely emarginate; the styles vary from moderately long 

 and slender to the very briefest knobs. The ovipositor of the 

 female shows an amount of variation similar to that noticed 

 in the form of the pronotal disk, this being chiefly in general 

 form and not so much in length. In the northern specimens, i. e., 

 those from New York, Pennsylvania, Ohio, Indiana and Iowa, 

 the ovipositor averages deeper, with the ventral margin straight 

 or very faintly convex and the apex not distinctly ventral but 

 approaching or reaching the median line of the ovipositor. In 

 the majority of southern specimens, i. e. those from Virginia and 

 Maryland, the ovipositor averages more slender, with the ven- 

 tral margin straight or very weakly concave and the apex dis- 

 tinctly ventral in position. In the twelve females from ArUngton 

 and Orange, Virginia, we find two females which represent the 

 more northern type and three others are intermediate. TheBelts- 

 ville, Maryland female also represents an intermediate condition. 

 The measurements given herein show that the variation in pro- 

 notal length is largely relative. The subgenital plate of the female 

 is very deeply and narrowly V-emarginate and the lateral portions 

 are always rectangulate to faintly obtuse-angulate, with the 

 angle not or but very sHghtly rounded. 



Color Notes. — The general color pattern of this form is that 

 found in all the members of this species group. The general tone 

 of the dorsal and lateral surfaces varies from tawny-olive through 

 snuff brown and vinaceous-brown to seal brown, the usual stip- 

 phng of blackish-fuscous varying in depth and density with the 

 general intensification of the whole pattern. The shining blackish- 

 fuscous areas on the sides of the pronotum, and also occasionally 

 on the pleura and the sides of the proximal abdominal segments,, 

 are generally but not invariably correlated with the general 

 intensification of the coloration. The caudal femora generally 



