252 THE BUTTERFLIES OF THE 



green, a faint yellow dorsal line from the last joint t< 

 the middle, where it forks, sending a branch over each 

 wing-cover to the tip of the head-case, where they meet ; 

 a lateral abdominal yellow line. The abdomen marked 

 with many white tubercles. 



This butterfly differs from most others in that the 

 males have only four feet developed for walking, while 

 the females have all six fully developed. The eggs are 

 deposited in the developing ends of twigs of Celtls 

 occidentalis on the partially-developed leaves, only one 

 to a leaf. The time for reaching maturity after the 

 fourth moult is four days, and the pupal period is from 

 five to seven days. 



Atlantic States, Mississippi Valley, Texas, Arizona. 



FAMILY ERYCINIM:. 



This family is represented by small or medium-sized 

 butterflies, with the same arrangement of feet as the last 

 subfamily of the Nymphalidse, or the males with four 

 feet and the females with six ; but they may readily be 

 known from the Libytheinje by the palpi, which are 

 short or only of moderate length. Little is known of the 

 preparatory stages, but, according to Mr. H. "W. Bates, 

 "the metamorphoses are variable, some genera resem- 

 bling the Nyinphalidse, in the chrysalis being suspended 

 by the tail, and others the Lycsenidse, in being recumbent 

 and girt with a silken thread. Too little is known of 

 the caterpillars to enable us to say whether they offer 

 any peculiarity." The preparatory stages offer good 

 bases of classification, often showing the relation one 

 group bears to another even when the imagines do not 



