EASTERN UNITED STATES. 93 



The chrysalis is an inch and a quarter long, of a pale 

 green, ochre-yellow, or ash-gray color, with two short 

 ear-like projections above the head, just below which, on 

 the upper part of the back, is a little prominence. This 

 chrysalis, like all the Papilios, is attached at the tip by a 

 button of silk, and supported by a loop round the middle 

 of the body. The last brood winter in the chrysalis state. 



United States generally. 



4. Papilio Troilus, Linn. 



Expanse of wings from 3.5 to 3.75 inches. 



Upper surface of body and wings black, the fore wings 

 crossed by a marginal row of greenish-yellow spots ; in 

 some specimens a part of a second row extends from the 

 hind margin forward. No spot in cell. Hind wings with 

 the marginal lunules and an inner row of spots forming 

 a broad macular band, all blue in the female and blue- 

 green in the male. The costal spot of this inner row is 

 mostly orange. There is a row of blue clouds between 

 these two rows. Ocellus part orange, not pupilled. 

 Tail .4 of an inch long. 



On the under side the spots are more prominent : 

 nearly two full rows of blue-green spots on the fore 

 wings, and two rows of orange spots on the hind wings. 

 Body black, with two rows of yellow spots on the sides. 



The larva when full grown is a little more than one 

 and a half inches long, the body thickest from the third 

 to the fifth segment. It is bright green above, a yellow 

 stripe edged behind with black across the anterior part 

 of the second segment. On joint 4 are two prominent 

 yellow ocelli annulate with black, and a large pupil 

 filling most of the lower portion ; a line of black in 



