362 



NEW YORK STATE MUSEUM 



abdomen fasciate with fuscous. Legs pale yellow ; the tarsi from 



the tip of the first joint pale fuscous; an apical ring on each of 

 the femora and an apical and a basal ring on each tibia is black- 

 ish. The wing variegated with some small cinereous black spots. 



Fig. 100 Leaf like appendages of S. 

 tri vitt ata 



Fig. 101 Processes mucli enlarged of^ter 

 minal segment of S. trivittata 



Pupa. Air tube with irregularly hexagonal cells, about four 

 times as long as wide ; inner edge nearly straight, outer more or 

 less regularly curved. Apex with a rather distinct, chitinous tip. 

 Ventral surface of abdominal segments thickly clothed with 



rather long, slender hairs 

 usually extending laterally. 

 Apical three fourths of the in- 

 ner margin of the hind paddle 

 distinctly serrate, each tooth 

 bearing a short, colorless 

 spine. Terminal appendages 

 consisting of two pairs of conic 

 processes, the outer ones end- 

 ing in a colorless spine, con- 

 cave and inclosing the bases 

 of the inner, shorter, more 

 trivittata Strongly curved ones. At the 

 extreme base of these posterior 

 processes there are a pair of chitinous, irregularly curved, blunt 

 hooks. 



Larva. Head, somewhat elongate, subconic. Basal segment 

 of antennae long, deeply notched at base and tipped with four 

 nearly equal, tapering processes and another just about one half 

 their length. Just behind the antennae are 10 long, light brown- 

 ish filaments, five on each side, the filaments of the third meta- 



