Lepidoptera of New York and Neighboring States 675 



Eggs relatively small, ovoid, without dark cement. Caterpillars as usual at 

 hatching; when full-grown, with all the tubercles blunt, somewhat tapering, sub- 

 equal, and of the same color (blue). Cocoon constructed like that of Callosamia, 

 between two or three leaflets of the food plant, the sheathing of silk extending 

 up the midrib of the compound leaf to the twig; cocoon more fusiform than 

 that of Callosamia. 



1. P. walkeri Felder. Olive (readily fading to yellow -brown) ; antemedial band 

 white, running out on forks of Cu, and touching the discal lunule; postmedial 

 white, with black before it, and a broad pink shade beyond, bent out at discal 

 lunule, concave above and below; outer part of wing powdered, black and yellow or 

 olive, shading into pink near apex. Apical eyespot small with a white crescent 

 on its inner side; subterminal line close to margin and nearly even. Hind wing 

 with postmedial line running to anal angle, and subterminal line preceded by a 

 broader inner line. Discal lunules, starting from basal side, black, white, trans- 

 parent, white, and yellow. Under side similar, {cynthia auct., not Drury). 

 (H 9:2 as P. cynthia.) 



Caterpillar on Ailanthus; rarely straying to wild cherry and other promethea 

 foods; at first green, with black head and tubercles; then yellow with pale head 

 and tubercles; finally, light greenish with blue tubercles. 



Sometimes several caterpillars spin on one leaf, and their cocoons have a com- 

 mon stem. The moth does not exactly match any of the described races of 

 P. walkeri, and may have come from some not fully explored part of China, 

 or be a domesticated mongrel form. It was originally introduced as a silk-worm. 



Vicinities of New York, Philadelphia, and Washington, District of Colum- 

 bia; introduced from the Orient. New York: Livingston, New York City, Staten 

 Island, and vicinity. 



