286 



July 2, 1854. Found one little one not more than one fourth to one 

 third of an inch long. Like all the others, the hairs and the white spot on 

 the side of the eleventh segment, and the dorsal tubercles, were very dis- 

 tinct. 



July 16, 1854. Full grown larva. Length, when at rest, one inch and 

 two tenths, very pale blue, transversely banded with orange on the middle 

 of each segment, the bands dotted with small black points, producing hairs, 

 and surmounted by black lines, and between each of the bands six trans- 

 verse, black lines. A large, irregular, white spot on side of the tenth and 

 eleventh segments, and a series of smaller white spots on each of the other 

 segments except the first three. Head orange dotted with black. Legs 

 blackish externally. The young larva? are whitish. The full grown have a 

 decided bluish tinge, entirely owing, however, to an optical phenomenon 

 from the contrast of the white with the transverse black lines. The head is 

 of a pale dirty orange or rusty yellow, with about eight black dots on each 

 side; a semicircular plate on top of the first segment and the anal valves 

 are pale orange dotted with black. There is a transverse series of black 

 dots on the second and third segments, without any orange band. Each of 

 the other segments is transversely banded with orange and dotted with 

 black, the dots being in two alternate rows, and all of them emitting distinct, 

 long, whitish hairs. Between each of the bands there are six slender, contin- 

 uous, black, transverse lines. The points are also connected by interrupted 

 black lines. Legs at base orange, black externally and at tip, except the 

 anal pair which are orange, dotted with black. The large, white, lateral spot 

 is common to the side of the tenth and eleventh segments. The other lateral 

 white spots are situated immediately behind the bands on the fourth, fifth, 

 sixth, seventh, eighth and ninth segments, the anterior spots being largest; 

 and thence they diminish to the ninth, while again the posterior spot is 

 very large and very distinct. The orange bands are interrupted on the top 

 of the seventh, eighth and ninth segments. 



Cocoons examined in August, 1855, made the same year in the ground, 

 had not a particle of silk, and no appearance even of gum; they were mere 

 earthy cases, which crumbled on being handled, the mouth only being flat- 

 tish and appearing to have been made of earth plastered by the insect. 



Arctia Arge Drury 



Oct. 23, 1840. Found one larva under a stone, another running across 

 the road. Black above and below, with three longitudinal, flesh white 

 stripes on the back. Tubercles gray with radiating black hairs. On each 

 ring, above, four tubercles, two and two, the anterior pair smallest; below 

 the lateral line three tubercles. Hairs beneath rusty. Prolegs rusty yellow. 

 Fore legs black. Head black. A flesh colored spot on the side of each 



