. The butterflies of the eastern United States and Canada [microform] : with special reference to New England. Butterflies; Butterflies; Papillons; Papillons. 17f^Sf^ 1286 THE BUTTERFLIES OF NEW 1^1 Mack upon the upper surface; and tlie other, the male of Cyaniris paeudargiolus. in wliich a similar change in general in the same southern region, but in this case affecting the male sex. These two cases, belong- ing to different families, though occurring in l)utterflies of similar range in a similarly restricted district, have no other jioints in common. First, Jiutoniades is a vellow
. The butterflies of the eastern United States and Canada [microform] : with special reference to New England. Butterflies; Butterflies; Papillons; Papillons. 17f^Sf^ 1286 THE BUTTERFLIES OF NEW 1^1 Mack upon the upper surface; and tlie other, the male of Cyaniris paeudargiolus. in wliich a similar change in general in the same southern region, but in this case affecting the male sex. These two cases, belong- ing to different families, though occurring in l)utterflies of similar range in a similarly restricted district, have no other jioints in common. First, Jiutoniades is a vellow l)utterHy. striped with l)lack, in which both sexes are normally alike, but where in the melanic form the yellow is partially or wiiolly sulxhuMl. tlic winir l)ecoming totally black above. In the other the sexes already differ in color, the female l)eing paler than the male and having a broad brown margin, while the male is almost or ai)8olutely uni- form blue above; in the male, hov ver, this blue is almost en- tirely changed to a dark l)rown or to a shade similar to tli;it bordering the wings of the female. Besides this, the melanic female of ('yaniris a|)pefir8 only in the spring brood, and here comprises all the members of that brood, at least in the southern portion of its distriiiiition. while there is no »icasonal restriction in .lasoniades. There are two other instances of this me- liinism among our New England butterflies, Atrytonc zabulon and E^rynnis uittalus. where the upper surface of the female is affected in certain instances. These again differ from the others, first in the imperfection of the melanism and second in there being iio restriction to the range of the melanic form, appearing as far as we know wherever the normal form appears and in about eqiud ([uantities; similar examples appear in allied Paniphilidi. Instances of alitinism are confined, so far as we yet know, to the Rhod- oreridi (where white is a prevailing color in an allieinism were co
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbutterflies, bookyear
