139] LEPIDOPTEROUS LARVAE — FR ACKER 139 



them, uniting them under the name Papilio, but retains Laertias and 

 Iphielides. A study of the larvae of ten species of Dyar's Papilio, 

 twice as many as Scudder had, shows the justification of Scudder's 

 view, four distinct forms of larvae being found. As it would be very 

 inconvenient to tabulate species of the family when using Papilio in the 

 broader sense, the writer has returned to Scudder's arrangement. It 

 might also be mentioned that the structure of the pupae upholds his 

 position. 



Genera of Papilionidae : 



a. Body bearing several rows of fleshy filaments or filamentous processes. 



Laertias 

 aa. Body without processes of any kind, except osmateria. 



b. Crochets arranged in a pseudocircle ; metathorax bearing an eye- 

 spot, 

 c. Prothorax bearing a small transverse black shield; lateral line 

 conspicuous; first abdominal segment bearing two black spots 

 near its caudal margin but no continuous transverse black 

 band. Euphoeades 



cc. Prothoracic shield indistinct, not black; lateral line inconspicu- 

 ous; first abdominal segment bearing a continuous transverse 

 black or yellow band near its caudal margin. Jasoniades 



bb. Crochets not arranged in a pseudocircle, no lateral crochets being 

 present; metathorax not bearing an eyespot. 

 c. Coloration not segmentally arranged; metathorax with a slight 

 transverse dorsal swelling. Heraclides 



cc. Coloration segmentally arranged; metathorax without a dorsal 

 swelling, 

 d. Each abdominal segment bearing a transverse black band 

 marked with or interrupted by circular yellow spots and 

 usually bordered by two transverse green stripes; narrower 

 black transverse intersegmental stripe also present in each 

 incision. Papilio 



dd. Each abdominal segment bearing a series of five transverse 

 black stripes. Iphielides 



Laertias philenor is distinguished from all other insect larvae by 

 the possession of several pairs of fleshy filaments on each abdominal 

 segment. 



Euphoeades troilus, in addition to the usual metathoracic eyespots, 

 has a distinct pair on the first abdominal segment; those of the meta- 

 thorax are separated by a distance on the dorsum subequal to the width 

 of the outer circle of each eyespot. E. palamedes has an indistinct pair 

 on the first abdominal segment and the metathoracic pair are separated 



