— 145— 



with a black band and clampers whitish. Later they become nearly 

 as in the last stage (except the pair on joint 13, which are plain), 

 but the lower white band and the olive gray band are replaced by 

 reddish, divided by a brown line. Length of larva about 40 mm. 



Fifth Larval Stage. — The mature larva varies from dark 

 green of the color of the leaf of its food-plant to brown. The green 

 form has the markings of the brown form more or less obsolescent. 

 The subdorsal line is usually distinct, the marks in the folds pale, 

 affecting the sub-dorsal line much as in the previous stage. The 

 brown form is as follows: Head flattened at the sides, white, the 

 sutures marked with black and the following black marks; a short 

 line in the center of the triangular plate basally; two shades on 

 either side of the central suture, converging slightly vertically; a 

 line up from the base of the palpus, dilated centrally and blended 

 inwardly; a short line covering the eyes and a line on the posterior 

 portion of the side of the head. Palpi tipped with reddish. Head 

 minutely and sparsely pilose; width, 5 mm. The caudal horn is a 

 conical rounded tubercle, from an elevated base, white. Body pur- 

 plish gray, with many round, small, diffiise yellowish spots, and 

 longitudinal, short, wavy black lines between them, more pronounced 

 above the sub-dorsal line and forming its border. This converges 

 on joint 3 and forms a continuation of the lines of the head. This 

 line also converges on joint 12 and ends at the horn. A series of 

 black shaded dorsal spots on joints 5-1 1 anteriorly. Laterally, and 

 especially in patches between the segments sujDcrstigmatally, the 

 yellowish spots are paler and enlarged, some partly confluent, giv- 

 ing the body a paler appearance, while the black lines are fewer and 

 more diffuse. The dorsum of joint 2 imitates the markings of the 

 head, having a dorsal line and the sub-dorsal space filled in with a 

 dull olive shading. Below this it has a broad white band; joint 3 is 

 suffiised o\-er the dorsum with a nearly uniform purplish flush, but 

 the markings reappear on the posterior part, widened and more 

 diffuse and end on the fold on the anterior part of joint 4, which has 

 nearly concealed a round black spot, bisected by a narrow blue line 

 surrounded by a white ring, and this nearly enclosed by an olive- 

 brown shade, replaced by pinkish to the sub-dorsal line. \'enter 

 pale, the black marks nearly lost. Thoracic feet white, with three 

 black rings; the abdominal (of which the last two pair are best de- 

 veloped) on joints 7-10 are as follows: Base white, next a broad 

 velvety black stripe, then a powdery blue stripe, a yellowish one 

 edged by a narrow blackish line and followed by a white band, a 

 black line, a broad olive-gray band and the claspers white. Anal 



