Fourth Sta(;e (fio-. lo). The brown gives i)lace to an enlire green 

 color, on which there is now only a faint indication of the bright ob- 

 lique band. The ocellate spot is now fully formed. Only an indistinct 

 trace of the warts is now visible on the last abdominal segment. 



Fifth Stage (fig. ii). According to Mr. Edwards, beside the 

 green specimens, brown ones are also found. Every indication of the 

 previous hairs and warts has entirely disappeared. 



Papilio Troilus. First Stage (fig. 12). In the alcoholic speci- 

 mens, w hich were the only ones at my command, the coloring was not 

 distinguishable, but it is probably brown, as in the related species 

 Turnus. The numerous bristles stand on warts, which are arranged 

 in longitudinal rows. On each side is a dorsal row of warts, each 

 bearing only one bristle, a sub-dorsal, a supra-stigmal and an infra- 

 stigmal row; there are additional bristles on the head, on the last ab- 

 dominal segment, on the abdominal legs, etc. The warts of the sub- 

 dorsal and supra-stigmal rows are largest in front and in rear, and 

 smallest on the middle segments. The bristles are stout, and have a 

 shovel-formed enlargement at the extremity (fig. \2a). 



Second Stage (fig. 13). What was said about the coloring in the 

 first stage holds good here, except that on the third thoracic ring a 

 dark spot now appears, which afterward becomes ocellate. The warts 

 have begun to disappear, and they are still clearly visible only on the 

 thoracic and the last abdominal segments in the sub-dorsal row; toward 

 the middle they ha\'e almost entirely subsided. The bristles have be- 

 come much smaller in proportion to the warts, and have entirely lost 

 the shovel-formed enlargement (fig. 13^'). 



Third Stage (fig. 14). After the .second moult the caterpillar is 

 greatly altered. The color has probably become green (as in P. Tur- 

 nus), interrupted by a bright band running oblicjuely over the first ab- 

 dominal segments, like that found in Turnus up to the fourth stage. 

 On the last abdominal segments also is found a trace of a band run- 

 ning in a similar direction. The black spot on the third thoracic ring- 

 has increased in size. The warts and bristles have almost entirely dis- 

 appeared, and only on the thoracic and the last abdominal rings faint 

 traces of them are still found. 



The Fourth Sta(;e has not been at my disposal. 



Fifth Stage (fig. 15). The general color is still probably green, 

 but distinct bright spots with a dark outline now appear where the sub- 

 dorsal, supra-stigmal and infra-stigmal warts had previously stood. 

 On the third thoracic ring an ocellate spot of intricate pattern has been 

 lormed, while the indication of a similar one is seen on the first ab- 

 dominal segment. No further trace can be found either of the warts 

 or the bristles; the body of the caterpillar appears perfectly smooth. 



