16 Journal New York Entomological Society. |Vo1 iv 



of pale spots on scutellum. I am inclined to regard hasllaris and 

 tiiberculatKS as synonymous, however. 



21. Nysson basilaris Cress. 



Nyv,son basilaris Cresson, Tr. Am. Ent. Soc. IX, p. 281, 9- 



Georgia. 



22. Nysson bell us Cress. 



A'ysson bellus Cresson, ibid. p. 2S0, 9 . 

 Montana and Texas. 



23. Nysson pumilus Cress. 



Nysson jtimilus Cresson, ibid. p. 405, $ . 



Nevada. 



-24. Nysson albomarginatus Cress. 



Nysson albomarginatus Cresson, ibid. p. 278, ^ 9 • 

 Nevada. Easily distinguished by the pale, continuous fascice of ab- 

 domen. The unique 9 type has also two, tranverse, pale spots on first 

 segment, near base. These may not be constant in a series, however. 



25. Nysson mcestus Cress. 



Ayssoj! tnasttis Cresson, ibid. p. 280, $ . 



Washington State. 



26. Nysson bicolor Cress. 



Hyponyzson bicolor Cresson, ibid. p. 284, 9 . 

 Nysson bicolor Handlirsch, 1. c. p. 402. 



Washington State. The unique type of this species lacks the third 

 submarginal cell. 



SOME NOTES ON LOCUST STRIDULATION. 



By a. p. Morse, Wellesley, Mass. 



Every observer of outdoor Nature is familiar to a greater or less 

 extent with the peculiar rattling or crackling sounds produced by 

 certain locusts or "grasshoppers" in flight. When at rest these in- 

 sects are quite inconspicuous, their colors resembling closely the pre- 

 vailing tints of their surroundings, but when in flight many of them at- 

 tract notice not only by their stridulation, but also by their strikingly 

 colored wings in which yellow and red with black markings predomi- 

 nate. 



