206 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERA) 



Lateral lobes of pronotum ample (larger than in C. attenuatus) , 

 cephalic margin straight to the distinct but broadly obtuse-angu- 

 late ventro-cephalic angle, thence straight to the rather narrowly 

 rounded ventro-caudal angle which is less than 90° (not as nar- 

 row as in attenuatus), caudal margin nearly straight, almost im- 

 perceptibly convex to the very weakly defined humeral sinus, con- 

 vex callosity narrow but distinct. 



Three females are macropterous in the series of ninety-two 

 specimens of the present species which we have examined. 



When compared with those of attenuatus, the male cerci are 

 found to be of similar general type but decidedly straighter and 

 less attenuate; the swollen portion is shorter and larger and the 

 distal portion is shorter, moderately but distinctly depressed and 

 not directed outward, the tooth is in the same position but has 

 its base broader and more flattened. 



The caudal femora are rather long but with the proximal 

 portion well developed; the genicular areas of the same are occa- 

 sionally infuscated, while the genicular lobes are bispinose. 



The ventro-external margins of the caudal femora are armed 

 as follows in forty-seven perfect specimens examined: 



The present species is found in the upper Mississippi valley 

 region and northward to Ithaca, New York; extreme south- 

 western Ontario; Gun Lake, Michigan, and Lone Rock, Wiscon- 

 sin: in western distribution it will probably not be found to occur 

 far west of the well watered portions of eastern Nebraska (Halsey 

 being the westernmost record) and in eastward distribution it is 

 probably limited by the Appalachians. 



Specimens Examined: Previously definitely recorded, 16. Here recorded, 

 76; 34 males, 29 females, 6 immature males and 7 immatiu-e females. 



Ithaca, New York, VIII, 22 and 25, 1<S91, (Morse), 15 o^ 12 9 , 2 juv. 9 , 

 [Morse Cln.]; VIII, 4 to X, 12, 1885 to 1912, 13 cf, H 9, [Cornell Univ.], 

 (1 9 macropterous); VI, 28 to VIII, 4, 1885 and 1887, 6 juv. d", 3 juv. 9, 

 [Cornell Univ.]. 



Gun Lake, Michigan, VIII, Hi to 20, 1912, (M. X. Carriker, Jr.), 1 cT, 1 9 , 

 Hebard Cln.]. 



