28 NORTH AMERICAN ACRIDIID^E. 



markedly from the northern forms to which I have applied Harris's 

 name {parvipennis} , but their true relation to the latter and to each 

 other has yet to be determined. Series of specimens captured in 

 different localities differ much in the relative proportion of long and 

 short winged individuals. The reason for this, whether environ- 

 mental, or in some cases possibly indicating varietal differences, 

 has yet to be discovered. 



Locusts of this genus are usually found most abundantly in 

 moist or wet meadows and marshes with soils of sandy loam, show- 

 ing a preference for a habitat intermediate in degree of humidity 

 between such species as Nomotettix cristatus and Tettix ornatus on 

 the one hand and Paratettix cucullatus on the other. 



Tettigidea armata Morse. 



South Carolina : Denmark, Aug. 15. 



Austral. A single specimen of the short-winged form of this 

 species was secured in the same place as the examples of Paxilla 

 obesa and Tettigidea prorsa. 



TRYXALINAE. 



Rhadinotatum brevipenne Thom. 



Georgia: (Savannah, Aug. 14, juv.) ; (Waycross, Aug. n, juv.). 

 Florida: (De Funiak Springs, Aug. 5, juv.) ; Live Oak, Aug. 10, (juv.) ; 



(Tallahassee, Aug. 8, juv.). 

 Alabama: (Greenville, July 31, juv.). 



The nymphs represent two early stages, but which ones cannot 

 be determined with certainty (probably i and 2) until the entire 

 series is known. 



A single adult female and several young examples of this 

 peculiar locust were secured in grassy swamps. 



Tryxalis bfevicornis Linn. 



North Carolina: Asheville, July 22, (juv. 4, 5) ; Governor Island, Aug. 20; 



(Lenoir, on road toward Blowing Rock, about 1500 feet, July 19, 



juv. 3, 4, 5) ; (Morgan ton, July 12, juv. 4) ; (Salisbury, July n, juv. 



4, 5) ; Saluda, Aug. 17. 

 Georgia: Jasper, July 25 ; Marietta, July 27, (juv. 4, 5) ; Stone Mountain, 



July 28, 1000 feet, (juv. 5). 

 Florida : Marianna, Aug. 6. 

 Alabama: Greenville, July 31, (juv. 4). 

 Tennessee : Chattanooga, Aug. 24 ; Johnson City, Aug. 27. 



Austral zones. Widely distributed but rather local. A cam- 

 pestrian species inhabiting the rank herbage of swamps, meadows, 

 and the vicinity of streams. 



