EASTERN UNITED STATES. 169 



Between these, or inside the marginal orange spots, are 

 four rows of pale yellow spots. 



Body black, a row of yellow spots on the side ; palpi, 

 club of antennae, legs, and a broken stripe beneath on 

 each side, orange. 



The egg is obovate, truncated, rounded at base, flat or 

 slightly depressed at the summit. The upper third is 

 marked with from twelve to eighteen vertical 

 ridges which gradually fade out below. Color FIG. 

 lemon-yellow when first deposited, but changing 

 in a few days to dull crimson, and finally, just 

 before hatching, to black, this period being from 

 nineteen to twenty days. 



The young larva is cylindrical, translucent, 

 yellowish, a row of brown tubercles to each joint, from 

 each of which arises a pencil of hairs. 



The mature larva is from 1.1 to 1.3 inches long, 

 cylindrical, the joints at the ends the smallest, the dorsum 

 and sides armed with 

 seven rows of long, Fio. 46. 



tapering, fleshy spines, 

 each of which springs 

 from a round, shining, 

 blue-black tubercle, the 

 tubercles of each joint 



nearly meeting. Each spine bristles with stout black 

 hairs, giving the larva the appearance shown in Fig. 46. 

 There is also another row of similar but much smaller 

 spines below the stigmata ; in this row joint 4 has no 

 spine, joints 5 to 10 each have two in line, joint 11 has 

 one, and joint 12 has a tubercle without a spine. On 

 the under side of the body, on joints 5 and 6, in line 

 H 15 



