HANCOCK 59 



compressed, the median carina of the pronotum more arcuate, 

 often with distinct translucent punctulations in broken linear 

 arrangement; the posterior femora scarcely at all ampliate. 



Variations as evidenced from an examination of forty-seven 

 specimens from Dune Park, Indiana: The punctulations of 

 the median carina sometimes appear like one or several lines 

 of irregular pin holes; the median carina may be without dis- 

 tinct pin-hole punctulations, but more or less translucent, or 

 both conditions may appear in the same individual; on the 

 other hand, an occasional one may appear with the median 

 carina sufficiently opaque as to scarcely admit light through it. 



HABITS. 



This species of Nomotetti.x lives on dry, sandy soil, lightly 

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

 accumulated from past seasons. It frequently seeks retreat 

 among prickly pear cactus on mossy covered ground, slightly 

 sheltered b}^ trees, among sand dunes. It is a curious little 

 species, occurring in certain localities in Indiana where there 

 was no evidence of much moisture, and though sometimes 

 quite common locally, it required the exercise of tact on hand 

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

 fall morning they did not appear to jump far, but as the sun- 

 light warmed the ground they became more active. Some 

 were in the last pupa stage, but the majority were adult. 

 This species was associated with an occasional individual of 

 Tettix ornatiis. Dune Park, Indiana, October 7, 1901. 



On two occasions this species was found frequenting mossy 

 ground skirting a swampy opening. They were on dry, sandy 

 earth at the edge of a wood, the opening being surrounded 

 by sand dunes. Nearly full grown pupa were found August 

 9- 1897. 



Very similar to N. cristatiis, resembling it in size and pro- 

 portions of body, but differing as follows: Median carina of 

 pronotum a little higher, especially opposite the shoulders, 

 more smoothly arched on top, and distinctly compressed into 

 a keel, which is about one millimeter in height at the shoul- 

 ders and so thin in section that punctulations of its surface 



