I7:i 



Tliis coiiiinoii and widcly-distrihiitcd species iiiaj^ 1»(! known l)_y its large 

 size and nnnierons, allernaliiig, \vhit(! and l)r()\vn, scalloped lines on a clear 

 fawn-brown irround. The circiiinslanc(;s under wliich (his species occurred 

 in Colorado show plainly lliat it is iinlii^fcnous in America. 



The west-coast and Colorado examples are a little larger (fore wing, 9, 

 0.80) than eastern examples (fore wing, 9, 0.70). 



Larva. — ".Mr. lieauchamp has liivored me with the following life-liistory 

 of this species : '1 took a fenial(> in 1S(!1. She laid me some small, oval, 

 wliitish eggs on the under side of a sallow-leaf, generally in the hollow Ijy 

 the side of the midrili or some other rib, often two or more on a leaf, but 

 never adjoining eacli other. 1 transixirred them to a yoinig tree growing in 

 a pot. As soon as hatched, the caterpillars spun a web resembling that of 

 the Ypon077ieutida-, iu\(\ sometimes, like them, several together. When a little 

 older, they bent and fastened leaves together, and ale througii the walls of 

 their dwelling until they left only a skeleton, when the}' went on to another 

 place to behave in a similar maimer. They were very sluggish, not taking 

 the trouble to push their tails outside, so that, when they had eaten the walls 

 of their tent, the lower part formed a bag full of their excrement. They 

 usually lay curled up in their tent, and all mine continued to dwell under 

 cover until they went down. I think I never saw them outside, except when 

 they were removing, and once when they had eaten their plant down to the 

 stump. Then they crawled about uneasily until fresh tbod was introduced. 

 When full-grown, they were scarcely an inch long, and reminded me some- 

 what of the caterpillars o? Eupitkecia i^cnoxata in their general appearance. I 

 proceed to give a description of them: — Short and stumpy, with a few very 

 short hairs; head small, shining-brown, the two upper lobes round and con- 

 spicuous; dorsal line brown, bordered on the upper side by a slender, broken, 

 whitish line (perhaj)s this is the true subdorsal) ; spiracular line broad, dirty- 

 white, puckered; the ground-color alxjve the spiracular line varies from pale 

 flesh-color to dark-brown, the belly from pale-gray to dark-gray ; in the 

 dark specimens, the dorsal line is scarcely perceptible, but the subdorsal (?) 

 is perceptibly darker; on the upper side of each of the anal claspers there is 

 a large blackish spot, in addition to which light specimens have a blackish 

 s[K)t on the centre-piece of the anal segment. Tiie chrysalis is in rather 

 a slight earthy cocoon. I kept mine in a tireless attic."'' — Newman's British 

 Moths. 179. 



