1914.] NATURAL SCIENCES OF PHILADELPHIA. 175 



distinctly by a strongly marked lin(>ar streak, and the 2 orange spots 

 of the female menapia are represented by 2 marginal groups of 

 vermilion scales, one in each section of the area. Vermilion scales 

 occur nowhere else on the specimen, although those described above 

 can be distinctly seen through the translucent scales of the upper 

 surface. 



The Female of Neophasia terlooti. — Under surface of hind 

 wing. — The vermilion markings are developed almost precisely in 

 the positions of the orange markings of the female menapia — more 

 strongly at the margin and the extreme base of the wing, but much 

 less so elsewhere. The lower section of area Ic is, however, richly 

 marked with vermilion for \ of its length from the base. The rest 

 of the colored markings are light yellow of an ochreish tint, rather 

 distinctly different from that seen elsewhere on the wings. 



Under surface of fore wing. — The marginal markings and the 

 marginal part of the chief orange patch are also light yellow, but of a 

 lemon tinge. The orange of the chief marking and of scattered 

 scales forming a linear mark in the cell is very rich and deep in tint: 

 the mark in the cell is in fact better described as orange-red. The 

 two marks at the end of the cell, in areas 5 and 6, are transitional in 

 tint between the yellow marginal and the more central orange 

 markings, and there is transition to be observed between the yellow 

 margin in areas la and lb and the rest of the chief orange marking. 

 These changes in color are effected by a gradual increase in the 

 number of orange scales and not by any real transition between the 

 yellow and orange pigments, although if we study the wings as a 

 whole we find several tints of orange and yellow. 



Upper surface of hind wing. — The vermilion markings are repre- 

 sented by comparatively few scales. Within these markings the 

 submarginal spots and the ground-color of the rest of the wing are 

 deep orange, but of a duller tint than that of the fore wing. The 

 submarginal spots of the outer (hind) margin are slightly less deep 

 in tint, while along the costa, where the surface is concealed beneath 

 the fore wing, the orange scales are gradually replaced by yellow, and 

 again, at the extreme margin, by black, with perhaps u trace of the 

 vermilion which is so distinct on the opposite surface. The vermilion 

 scales could not be properly investigated because of the overlap of 

 the wings. 



Upper surface of the fore wing. — The colors are nearly as on the 

 under surface, but, except at the apex, the submarginal spots and 

 the margin of the principal marking are distinctly less pale and 



