202 DAVENPORT ACADEMY OF SCIENCES. 



tapering towards both ends and, apparently, with twelve shallow 

 annulations, the thumb small and at some distance from the apex 

 of the joint. Rostrum extremely long, reaching about one-half 

 its length beyond the abdomen. 



Pupa. — The younger pupse are whitish and the larger pale 

 orange, the wingpads and mesothorax whitish, the former often 

 with a blackish external margin, and the latter with the two 

 median lobes faintly dusky or greenish. The head darkest and 

 the end of the body palest. Surface of body quite densely and 

 coarsely granulate. Eyes brown, ocellar spots red. Antennae 

 rather long and stout. 



Migratory Female. — Length of body quite uniformly 

 1.2"""- ; expanse of wings about 2.8'"™-. Form slender, much 

 more so than in most species. Color orange, varying in depth, 

 the prothorax darkest. Head black ; in the younger ones dusky 

 with only the front edge black. Eyes brown, ocelli clear, 

 bordered with black at inner edge. Antennae blackish. Legs 

 dusky with a yellow tinge, and rather slender. Mesothorax, 

 scutellum and sternal plate black or dark brown. There is a 

 poorly defined, more or less dusky band or shade across the 

 prothorax, two ill-defined dusky spots near anterior margin, with 

 more or less distinctly dusky antei-ior angles, and sometimes a 

 blackish subdorsal spot each side in the dusky median band. 

 Front of head straight or slightly concave. Antennae slender, 

 the first joint about as long as wide, slightly stoutest at base, 

 truncate at tip, with but feeble indications of annulation. The 

 second is slightly longer than wide, thinnest at base, rounded at 

 apex, and rather coarsely scaly or annulated. The third is about 

 three times the length of the two basal joints combined; it is 

 slender and of almost equal diameter throughout, with the upper 

 sensorial membrane about one-half the length of the joint; the 

 lower one is minute, often apparently wanting, and close to the 

 base of the joint, resembling in this respect those of Ph. c- 

 avellana. The lower part of the joint, as far as the upper 

 sensorium, is rather coarsely annulated, and the upper part scaly. 

 Wings long and narrow and faintly dusky. Stigma and costal 

 cell dusky with the stigma not well separated from the cell. 

 Subcosta and veins blackish, the latter bordered with a dusky 



