OETHOPTERA OF INDIANA. 219 



j^ronotiun strong!}' crested and arcuate; so compressed and thin in 

 section that the punctuhitions of its surface appear translucent when 

 held against the light. In the shorter and more common form the 

 pronotum exceeds but slighth' the tip of ahdomen and the wings do 

 not reach its apex; in the long form the pronotmn extends 3 mm. and 

 the wings 4 mm., beyond the tip of ahdomen. 



Measurements: Length of body, male, 7.5 mm., female, 8 mm.; 

 of antennge, 3 mm.; of pronotum, male, 7.3 mm., female, 8 mm.; of 

 hind femora, male, 4.3 mm., female, 5 mm. Length of pronotum, 

 long form, 10 mm. 



This crested grouse locust probably occurs in most portions of 

 Indiana, having been taken by the writer in Perry, Monroe, Vigo and 

 Lake counties, while Dr. Hancock has found it abundant at Dune 

 Park, Porter County. In the southern portion of the State it makes 

 its home on the sides of dry sunny banks in pastures where the grass 

 is scant or has been cropped short, and where the species of "Ever- 

 lasting," Antennaria and Anaphalis, delight to grow. In such places 

 it may be taken by the score in late autumn or early spring. In the 

 northern counties it lives, says Hancock, "on dry, sandy soil, lightly 

 covered by fragments of twigs, leaves, and various fine debris accumu- 

 lated from past seasons. It frequently seeks retreat among prickly 

 pear cactus on mossy covered ground, slightly sheltered by trees, 

 among sand dunes. It is a curious little species, and though some- 

 times quite common locally, it requires the exercise of tact on hands 

 and knees to capture the sprightly little insects. In the cool October 

 morning they did not appear to jump far, but as the sunlight warmed 

 the ground they became more active. Some were in the last pupa 

 stage, but the majority were adult." 



But two specimens of the long-Avinged form have been taken 

 among the hundreds of short-winged ones collected in this State, a 

 male in Vigo County and a female in Perry County. On account of 

 the greater length of the pronotum, its median crest does not appear 

 so prominent nor so strongly arched in the long-winged form as in 

 the more common one. Dr. Hancock, in a recent letter, has given 

 the varietal name aiavus to this long-winged form. 



XIII. Tettix Charpentier (1841). 



In this genus the median carina of the pronotum is distinct but 

 not arched or raised in the form of a crest. The vertex is wider than 

 one of the eyes, and its front projects beyond them. Antenna? short, 

 stout or slender, usually composed of 14 joints. Pronotum with its 



