I 12 



ON THE EARLY STAGES OF PAPILIO RUTULUS.— Bdv. 



By Henry Edwards. 



On Exclu.SION from Egg. — Head very large, black, shining. 

 Second segment with two tubercles on the sides in front. Body 

 brownish-black. Segments3,4, 5, 10, 1 1, 12 withtwo tubercles each, 

 arranged sub-dorsally. Extending from the seventh to the ninth 

 segment is a small, but conspicuous, triangular white patch, the 

 vertex of which is directed posteriorly. Feet and legs black. 



After First Moult. — The head now becomes pitchy, the 

 body streaked with shades of brown, longitudinally ; the two tub- 

 ercles on second segment are chestnut-brown, and the whole of the 

 processes brighter and more glossy. The white triangular patch is 

 larger and more distinct, and the posterior segments are delicately 

 mottled with brownish. 



After Second Moult. — Head chestnut-brown, with pinkish 

 tinge. The tubercles of the second segment are larger than be- 

 fore, and have become yellowish-brown in color. Between them 

 is a yellowish corrugated fold, and on the dorsum, at the base of 

 the longer tubercles, are two smaller ones, also chestnut-brown. 

 Body brownish dorsally, with a green tint throughout ; laterally 

 it is pale apple-green. The third segment has six tubercles, the 

 middle and lateral being exceedingly small. Fourth segment 

 swollen, the body here attaining its greatest size. This segment 

 has also six tubercles, the two dorsal being the smallest. The 

 fifth segment has four tubercles, the smaller pair of which are 

 placed anterior to the other. The triangular patch has now be- 

 come cream-yellow, and encroaches in a point posteriorly on the 

 ninth segment. Segments 9, 10, 1 1, 12, 13 have each two tubercles, 

 which are directed backward, and increase posteriorly in size, so 

 that those of the thirteenth segment are double the length of 

 those of the ninth. Mouth parts, legs, as well as the whole of the 

 under side, pale bluish-green. 



After Third Moult. — The head is now pale bright chestnut, 

 with a decidedly pinkish tint, and the mouth parts of a deeper 

 and more decided green. The body has assumed a pale apple- 

 green color, the tubercles are brighter and more approaching to 

 brownish-orange, and the triangular patch is buff, with some 

 streaks of green running through it. The tubercles of twelfth 

 and thirteenth segments are now yellow, and at the base of those 

 of 5, 9, 10 and II are some bluish dots. Upon being touched, 

 the young larva exhibited the usual retractile horns. These were 

 situated at the base of the head, between it and the second seg- 

 ment. They were pale orange, much darker at the tips. 



I regret that I could not carry these larvae further than this 

 stage. I was called away from home, and on my return found 

 them dead. Three larvae were obtained from eggs observed to 



