Packard.] ioJi [March 17, 



above and gray on the sides, are just as in C. californiea and "('!)fragih8," 

 but the dorsal pale-blue lines are nearly obsolete, being, however, pres- 

 ent, though narrow, on the second and tiiird thoracic segments, and on 

 abdominal segments 4-7, The dorsal ochreous-red lines are present in 

 front, but obsolete on the posterior half of the body. 



It is characterized by a narrow, distinct blue streak on the side of each 

 abdominal segment, extending from the lateral pale-blue stripe up into 

 the dark-brown subdorsal region. There is a minute blue dot in front of 

 the much more distinct streak, and these two spots are the remnants of 

 the two normal lateral pale-blue dots of G. cali/ornica and "(l)fragilis." 



Larva op a Clisiocampa not californica. 



Received from Santa Rosa, Cal., from E. L. Ricksecker, April 20. The 

 cast skin of the head of a larva of the first stage was found in the box. 



Stage IL — Length, 3-4 mm. Head large, considerably wider than the 

 body, including the first thoracic segment ; black. Body dark, with a dis- 

 tinct, firm subdorsal and two lateral pale, snuff-yellow lines, the upper 

 lateral one being the more wavy and thread-like. The subdorsal lines 

 send in yellowish points or dilations along the sutures. A dorsal row of 

 dull blue elongated spots, that on the second thoracic segment larger and 

 shorter and broader than the others. The blue spots are wanting at the 

 end of the body, the one on the eighth abdominal segment not so distinct 

 as the others in front. The dorsal hairs are long and unequal, snuff-yel- 

 low brown ; those low down on the side being gray, and uniformly 

 shorter than those on the back. 



Life History of Clisiocampa Americana (Harris). 



From a mass of eggs found on the apple at Providence, and several of 

 which hatched April 14, one was seen, April 15, to make its way out of 

 the egg. The hairs, immediately after the shell is broken open, stand up 

 as erect and stiff as a few hours later, not being soft, flabby and matted 

 together as often seen in hairy or spiny larvae, such as the Attacinae. 



A brood of larvte in the second stage and 5 mm. long was noticed in 

 the crotches of apple and wild cherry trees at Providence, April 26. 



Larva, Stage 1. — Described when from ten to twenty-four hours old. 

 Length, 2-3 mm. Head moderately large, as wide as the second and third 

 thoracic segments, shining black, with numerous long, uneven white 

 hairs. The prolhoiacic segment is a little wider than the second and 

 third and tlian the head, and the lateral piliferous tubercle projects 

 so as to add to the appearance of the width of the segment. From 

 this segment the body narrows very gradually backward to the 

 end. The body is wholly dull black, clothed with white hairs which 

 arise from minute but yet distinct rough warts. While the sutures are 

 livid and the front edge of the prothoracic segment is also livid, I can 

 see no traces of any other colored spots like those of (7. californica. 



