No. 492] 



PINK INSECT MUTANTS 



779 



for several weeks without showing the sHghtest change in coloration, 

 and third, red vegetation is not abundant early in August, and 

 katydids, unlike caterpillars, roam about, feeding on a variety of 

 plants and even on animal food. 



No. 29. A pink male Amhlycorypha ohlongifolin was captured 

 by Grossbeck (1907) August 1, at Lahaway, Ocean County, X. J. 

 He also mentions several pink specimens taken some years ago 

 by Professor J. B. Smith in the pine barrens of New Jersey, and a 

 pink AmpMscepa hivittata taken August 23, by himself at Lake- 

 hurst, N. J. He says that in his experience Gupona odolineafa 

 (perhaps identical with the species above cited as G. geminata) 

 "is almost as often pink as green." The title of Grossbeck's 

 paper shows that he regards the pink phases of these various 

 insects as sports, or mutants, and not as the result of the environ- 

 mental conditions (temperature, food, etc.). 



