266 ENTOMOLOGICAL NEWS. [October, 



mens rested on little side shoots of larger branches or canes. 

 When past the third moult, the larva ascends to upper branches 

 of stouter growth, and is then mostly parasitized. Of the nine 

 larvae found, only three pupated. Two of the number had their 

 caudal horns nipped off close to the base, and both ceased to grow 

 after last moult and perished. In the breeding-cage I did not 

 always give them purple willow so long as I had enough of other 

 species on hand to feed from. Raising from 200 to 250 of various 

 larvae, all from Salix, it required large quantities of food-plants to 

 bring these to pupation, and the difficulty not lessened by the dis- 

 tance from base of supplies. 



DESCRIPTION OF LARVA. 



Young larva near first moult. Cylindrical smooth and color of 

 a light green. There are seven white, oblique bands on each side, 

 .and two subdorsal thoracic lines. The last oblique band passes 

 into the caudal horn, which is purple and nearly straight. Length 

 of body 12 mm. (about ^ inch), width 1^2 mm. Length of caudal 

 horn 2 mm. Thoracic and abdominal feet green, concolorous 

 with body. Under a magnifier the body seems to be covered by 

 many minute whitish points. This specimen was found on Salix 

 viminalis or Basket Osier, in Long Island City, July 13, 1894. 



Young larva between 2nd and $rd moult. Body cylindrical, 

 green, almost color of willow leaf, and entire body finely granulated 

 with white points inclusive of caudal horn. Sphingial bands white, 

 bordered above by a dark green line, darker than color of body. 

 Each one of the bands reaches posteriorly about one-third across 

 adjoining segment. There is one subdorsal, thoracic, yellow line 

 on joints 2, ., and 4. The caudal horn has laterally a whitish 

 stripe, formed by the seventh oblique band passing into it. Between 

 these whitish stripes are enclosed two crimson lines describing a 

 delta on the dorsum of horn. Below the horn is green. All tho- 

 racic or true feet crimson, legs above white. Abdominal feet con- 

 colorous with body. Length 24 mm. (about \l inch), and width 

 of body 3J/2 mm. This specimen found on Salix purpurea, near 

 Mount Vernon, West Chester County, N. Y. , July 25, 1894. 



Half -grown larva. Head not quite so triangular as in the larva 

 of Smerinthus geminatus and the face oval. On each side of face 

 one vertical green line lighter than the rest and nearly meeting 

 on top of head. Posterior to this line is another of a much darker 



