SUBFAMILY I. TRYXALINMO. 205 



Durango, Mexico. Specimens at hand received from Bruner are 

 labelled "Western Nebraska," and be records it (1893a, 22) as 

 occurring upon the prairies of the entire State, frequenting rather 

 high grounds in preference to low ones. Morse (1907, 28) records 

 it from Oklahoma and Texas, and adds that "it is characteristic 

 of the drier parts of the prairie-plains and is often locally abun- 

 dant." M. belfnn/ii Stal (1873, 1U2) described from Texas, is re- 

 garded as a synonym. 



85. MEBMIRIA IXTERTEXTA Scudder, 1899a, 42. 



Close to bivittata, the principal differences given in the key. The 

 brown median stripe on head and thorax is usually present and the lateral 

 ones distinct. "Pastigium in both sexes scarcely broader than its length 

 beyond the narrowest part of vertex (Pig. 77, g) ; triangular, male, or sub- 

 triangular, female, with straight, male, or arcuate, female, sides and blunt 

 apex, the margins slightly ascending and with faint or no median carina." 

 Disk of pronotum more than twice as long as broad, lateral carinas evident 

 but vague, median one rather strong, hind margin feebly obtuse-angulate. 

 Tegmina and wings reaching, hind femora slightly exceeding, the tip of 

 abdomen. Length of body, $, 31 42, 9, 46.5 57; of antennae, #,18, 9, 

 15; of pronotum, $, 57, 9, 7.G 9; of tegmina, $, 23 28, 9, 3340; 

 of hind femora, $ , 18 22, 9 , 2G 31 mm. 



Ocean View, Va., Aug. 9 (Caudell) ; Millenbeck and Ports- 

 mouth, Va,, Aug. 8., Oct. 3 (Fox] ; Dunedin, Fla., Oct. 28 (W. 8. 

 B.}. In Florida this locust has been recorded by Davis and R. & 

 H. from a dozen different localities from Jacksonville and Cedar 

 Keys southward, and it doubtless occurs throughout the State, 

 including the southern keys. It is a lover of moist places and is 

 usually to be found among the tall grasses and weeds of both salt 

 and fresh water marshes, but sometimes occurs in the under- 

 growth between the adjacent dunes. Morse (1904, 29) states that 

 it is a "shy and active insect, flying freely and far, and on alight- 

 ing dodges quickly around the grass stems to escape observation, 

 or, slipping nimbly downward and backward, seeks to hide itself." 

 Scudder's types were from Georgia and Eagle Pass, Texas, and 

 its known range extends from New Jersey and Virginia, south 

 and southwest to the latter place. 



8G. MERMIRIA BIVITTATA (Serville), 1839, 589. Two-striped Mermiria. 



Form rather robust for the genus. Male usually greenish or citron- 

 yellow, with tegmina pale brown at base, becoming darker brown apically; 

 female usually darker, the upper surface often with a purplish tinge, teg- 

 mina dark brown with a distinct greenish-yellow subcostal stripe; both 

 sexes with a shining chocolate-brown postocular stripe extending along 

 the upper third of lateral lobes and sometimes with a reddish-brown me- 



