16 
Journal New York Entomological Society. |Voi iv 
of pale spots on scutellum. I am inclined to regard hasilans and 
tuberculatus as synonymous, however. 
21. Nysson basilaris Cress. 
Nysson basilaris Cresson,.Ti\ Am. Ent. Soc. IX, p. 281, 9* 
Georgia. 
22. Nysson bellus Cress. 
Nysson bellus Cresson, ibid. p. 280, 9 • 
Montana and Texas. 
23. Nysson pumilus Cress. 
Nysson pumilus Cresson, ibid. p. 405, g. 
Nevada. 
24. Nysson albomarginatus Cress. 
Nysson albomarginatus Cresson, ibid. p. 278, $ 9 • 
Nevada. Easily distinguished by the pale, continuous fasciae 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 moestus Cress. 
Nysson moestus 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. 
