24 LEPIDOPTERA OP NORTH AMERICA. 



2. R. lyside Godt. Encyc. Method. IX, 93. 



Upper side whitish green ; primaries, with the base, yellowish 

 orange, and the summit washed with yellow russety. Secondaries, 

 without spots. 



Under side of primaries a little paler than the npper, with the 

 summit somewhat broader russety. 



Under side of inferiors yellowish, without spots, the median 

 nervure very prominent ; antennas short, grayish rosy, with the end 

 of the club ferruginous. 



Female whiter, with the upper side of the secondaries ochry 

 yellow, and the base of the primaries deprived almost entirely of 

 the yellow spot. 



Southern States. 



GrODAKT. 



3. R. rhamni Linn. Figured in Boisd. Spec. Gren. pi. 2, B. fig. 7. 



Upper side of the male citron yellow, that of the female greenish 

 white, with an orange point on the extremity of the discoidal 

 cellule of each wing, and some very small indistinct ferruginous 

 points on the fringe. 



Under wide of the male paler than the upper; the discoidal 

 orange spot is replaced in both sexes by a ferruginous point, a 

 little whitish in its centre. 



Body blackish above, yellowish below, with white silky hairs on 



the thorax and at the base of the abdomen. Expands over two 



inches. 



California. 



Boisd. 



4 



CALLIDRYAS Boisd. 



Inferior palpi much compressed, with short hairs ; last article 

 conical, much shorter than the preceding ; antennae of moderate 

 length, neatly truncated at the extremity, slightly arcuated, enlarg- 

 ing insensibly from the base to the extremity. Prothorax rather 

 long. Body robust. Abdomen much shorter than the secondaries. 

 Wings robust, discoidal cellule closed ; secondaries forming a 

 groove which embraces the under side of the body. 



The Callidryas vary in color from orange yellow to pale saffron. 

 Their wings, always destitute of angles, ordinarily have on the 



