392 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERA) 



briefly and narrowly darkened ventrad.-^ The stridulating field 

 of the male tegmen is similar to that of rohustus rohuslus, in very 

 large individuals of proportionateh^ greater size. In other respects 

 we find the two races inseparable. 



Tijpes. — ^Two females from Texas and Nebraska. 



Single Type here Designated: 9 ; Texas. (Alexander Agassiz.) 

 [Museum of Comparative Zoology.] 



The armament of the limbs is generally similar to that of typi- 

 cal rohustus; the ventral margins of the caudal femora bear like- 

 wise usually a few small spines, in the series before us the extremes 

 being, internal 1-12, external 0-7. 



For measurements see page 393. 



•The green color phase is predominant. 



The present geographic race is distributed from extreme southern 

 New Jersey, over the entire coastal plain of the southeastern United 

 States, as far south as Hastings, Florida, but on the Piedmont 

 plateau is only known from Georgia. Westward it is widely dis- 

 tributed over the entire Mississippi Valley region, the limits of 

 distribution being La Forte County, Indiana; White Bear Lake, 

 Minnesota; Garden City, Kansas, and Clarendon and Cisco, Texas. 

 It is apparently not found in southeastern Texas, and we have 

 no records from Louisiana where nuich field work remains to be 

 done; Nugent, Mississippi, is as yet the only record for that state. 



In addition to a series of 14 specimens examined by us but previously 

 recorded we have had before us 93 specimens; 45 males, 38 females, 5 im- 

 mature males and 5 immature females. 



Cold Spring, New Jersey, VIII, 1910, (W.T.Davis), 2 d", [Davis Cln.].2« 



Cape May, New Jersey, VIII, 11, 1903, (H. L. Viereck), 1 cf ; IX, 9, 1911, 

 (H. Fox, dune grass areas), 1 9 , [all A. N. S. P.]. 



Newcastle, Delaware, VIII, 6, 1911, (H. Fox), 1 c?, [A. N. S. P.]. 



Chesapeake Beach, Maryland, VIII, 2, 1912, (Wm. Palmer), 1 d^, [U. S. 

 N. M.l. 



25 Bruner separated his Nebraskan material with weakly marked vertex 

 from that with unmarked vertex, including a supposed but not really con- 

 stant difference in the width of the same, naming one crepitans and the 

 other rohustus. This is unwarranted, all of this material belonging under 

 rohustus crepitans. 



" In addition to this southern New Jersey material, Mr. Davis has 

 kindly sent us the series of 21 males and 1 female from Erma, New Jersey, 

 which he has recorded as crepitans, and which does belong to this race show- 

 ing no variation whatever toward rohustus rohustus. 



