88 



THE BUTTERFLIES OF THE 



Fig. 12. 



pointed, or rather large and truncated ; the sides of this 

 crust irregularly melon-ribbed. Color of the surface 

 russet, of the crust bright ferruginous. 



The young larva is ferruginous, marked longitudinally 

 by many rows of low, conical, 

 black tubercles, each supporting 

 a black hair. When mature 

 (Fig. 12), it is two inches long ; 

 color velvety black, with a slight 

 purplish or chestnut-brown hue ; 

 covered with long fleshy tubercles 

 of the same color as the body, 

 and shorter orange-colored tuber- 

 cles, as follows : two brown ones 

 on joint 2 ; two brown ones and 

 two orange ones on joint 3 ; joints 

 4 and 6 the same; joint 5 with 

 four orange tubercles; joints 7 

 to 10 each with two brown lat- 

 eral tubercles and two orange 

 ones; joints 11 and 12 with four 

 brown tubercles that often have 

 orange bases; joint 13 with two 

 dorsal brown tubercles but no 

 lateral ones. Joints 8 to 11 have each a lateral orange 

 spot just before and above the spiracles, which are sunk 

 into the flesh and scarcely perceptible. Head, legs, and 

 venter the same color as the body ; the top of joint 2 

 with an orange transverse spot on the anterior edge, from 

 which is thrust out the osmaterium, or scent-organ. 



The chrysalis, represented in Fig. 13, — a, shaded back 

 view ; b, lateral outline, — is at first yellowish green, but 



P. Philenor, larva. 



