268 ENTOMOLOGICAL NEWS. [October, 



b 



or less intensity, when viewed under certain lights. The light- 

 green, vertical lines of head become more whitish and meet at 

 the vertex, mandibles and maxillae green ; mouth-part blackish, 

 antennae cream colored and greenish at base. Stigmata or breath- 

 ing orifices have changed to light buff" color. The edge of clasp- 

 ing surface of pro-legs assume now a brownish shade. True feet 

 same as before. Caudal horn very black on sides and tip. There 

 is now a yellowish white line below the black stripe of horn, into 

 which the seventh oblique white band passes. Length of body at 

 rest 65 mm. Transverse diameter of body 10 mm. (0 inch), and 

 of dorso- ventral 12 mm. Horn 6 mm. long. This larva was found 

 in Long Island-City, June 24th, on Salix purpurea, and went into 

 the ground to transform July lyth, making the time from hatching 

 to pupation four weeks, i. e., judging of its age from size when 

 collected. Larva contracted finally so that length when in motion 

 could not be taken. 



Pupa. Two pupae were dark brown and one reddish brown, 

 shiny tongue case short, prominent and slightly detached, so as to 

 be scarcely noticeable. Length from 35 mm. (i ^ inch) to 39 

 mm. (about \y 2 inch). Width across wing-cases, from 8 mm. 

 dl inch) to 9 mm. Cremaster 4 mm. long. 



Postscript. On September 2nd, found a larva of luscitiosa on 

 white birch {Betula alba\ in Hudson County, N. Y., about two- 

 thirds grown. It rested on the lower cane of one of the sprouts 

 near the ground. Only one willow within a hundred yards oi the 

 spot. Thinking it might have been knocked off the latter, I placed 

 both birch and purple willow in the breeding-cage. It fed on birch 

 at once and, four days later, is still feeding on this new food-plant. 



ENTOMOLOGICAL NEWS for September was mailed August 30, 1894. 



