256 ENTOMOLOGICAL NEWS. [October, 



is lost, the reticulations dividing them become broad, separating 

 a series of rounded, shallow pits, not regularly arranged, but 

 quite close together. 



Larva, stage III. Head narrowing upwardly, with a rather 

 marked angle between front and sides, clypeus rather large, su- 

 tures evident, the median depressed at vertex; width i mm. 

 Body cylindrical, joint 12 enlarged dorsally, sloping off rapidly 

 to joint 13, which is small; anal feet no larger than the other ab- 

 dominal ones. On joint 6 dorsally a fleshy hump, low, conical, 

 nutant. A very slight one also on joint 7. Color lilac-white, 

 diffusely marked along the sides with a darker shade. A brown- 

 black dorsal band, narrowing and disappearing on joints S-io, 

 but distinct again posteriorly. A faint white stigmatal line. 

 Thoracic feet dark. Larva rests on a perch made of the midrib 

 of the leaf. 



Stage IV. Head higher than joint 2, concolorous with body, 

 with a purplish band from antennae narrowing upwardly to vertex 

 of each lobe, save dark mottlings, especially posteriorly on the 

 sides; width 1.7 mm. Body lilac- white; the darker lateral streaks 

 become oblique subdorsal lines, but are faint, as is the obscure 

 white stigmatal line. Dorsal band continuous, but very narrow 

 on joints 8-10, velvety brown-black on the nutant fleshy hump 

 on joint 6, reddish on the hump on joint 12. Venter heavily 

 shaded with purple-brown; feet all dark. Tubercles small, con- 

 colorous, with very fine short setae. Row i anteriorly, ii poste- 

 riorly subdorsal, iii lateral, iv posteriorly substigmatal, v and vi 

 in line subventral. Spiracles black ringed; anal feet white above; 

 a white line from the spiracular line onto the foot of joint 10. 

 The two setse of row i are borne on the hump of joint 12; but 

 the humps on joints 6 and 7 arise between the tubercles and bear 

 no setae. 



Stage V. Width of head 2.8 mm. Humps on joints 6 and 7 

 subequal, leaning backward, retractile, bearing tubercle i at the 

 lateral base; anal feet used in walking, small; stigmatal white line 

 absent on joints 11-13, but bent at right angles on joint 10, pass- 

 ing clown along the foot. Otherwise as in the description by 

 Edwards and Elliot. 



Food-plants. Willow {Salix) and poplar (Populns). 



