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Hawaii, and A. columbi, Perkins, from Columbus, Ohio, being intermediate 

 between them. The three forms agree in their general shape and colour, and in 

 the structure of the antennae, the only distinctions consisting in the distribution 

 of the discal hairs on the forewing. It is possible that the three forms may 

 prove to be merely local races of a single species. A. frequens appears to have a 

 wide range, and according to Dr. Perkins, it attacks four different genera of 

 leaf -hoppers in Hawaii, including Peregrinus maidis, — Ed.] 



