776 



THE AMERICAN NATURALIST {Vo-l. XLI 



of both green and brown individuals in some of our species of 

 cone-headed grasshoppers {Conocephalus nebrascensis Bruner, C. 

 rohustus Scudder), which are not known to have a pink phase, 

 ahhough Walker (1869) has based his C. rosaceus on a pink indi- 

 vidual of this genus from Northern China. In C. robtistm the 

 brown and green colors are occasionally found in the same indi- 

 vidual, a condition that, to my knowledge, has never been met with 

 in the species of Amblycorypha.^ 



I find that certain green species of Homoptera belonging to the 

 families Jassidae and Fulgoridae occasionally present striking color 

 aberrations comparable to those of the Locustidae. Ball (1900) 

 described as var. paeta a red individual of the green Jassid Macr op- 

 sis laeta Uhler and noticed its resemblance to the pink phase of the 

 katydids. ^Ir. William T. Davis has loaned me series of speci- 

 mens of the jassid Gypona geminata Osborn, and of the fulgorid 

 Amphiscepa bivittata Say which are of peculiar interest in this con- 

 nection. The Gypona series comprises three specimens of the 

 common green phase taken September (>, at T.akehurst, X. J., three 

 brown individuals taken at the same time and ])lace, and two pink 

 specimens from Staten Island (September 11). There is also ii) tlic 

 collection of the American Museum of Natural History a pink indi- 

 vidual of the same species taken l)y Mr. J. Angus, at West Farms, 

 N. Y. On closer examination the ventral surface and gronnd color 

 of the pink specimens is s(>cn to he uiv(>nisli yellow ([)rol);il)ly green 

 in life), with irregnlar ci'iniscjn niiirkinu's on the head and thorax, 

 and elytra! veins of the stune coloc. In the other .sj)ecinHMis the 



especially on the dorsum, and there are no distinct markings on 

 the head, thorax and elytra. The common form of tlie well- 

 known /I ?Ay?)///.sY,rwf })iviitata is oea-PTCon. with the head, sides of 



