194 Journal New York Entomological Society. [Voi. v. 



Feet on joints 6-13. Thoracic feet colorless ; dorsal vessel dark green, 

 no marks. The spines are arranged three on second annulet, the upper 

 one forked, the two lower simple and short ; one small point low down 

 on third annulet; three on fourth annulet, the two upper forked ; two 

 on each division of subventral fold, all simple, short. 



Last stage. — No change. Head 1.3 mm. The head and thoracic 

 feet seem a little greener than before. 



Ultimate stage. — Smooth, waxy, scarcely shining, all pale whitish 

 green, dorsal vessel dark. Segments indistinctly 3-annulate. Head 

 concolorous with body, eye black; width 1.3 mm. Length 11 mm. 

 The Y-spines are entirely absent. 



Found on young hickory leaves at Fort Lee, N. J., during the last 

 of May. Single brooded. This is doubtless the larva briefly described 

 in Dr. Packard's 5th Report U. S. Entomological Commission, page 

 317, as " Selandria sp." 



Harpiphorus maculatus Norton. 



A specimen with three submarginal cells on one side and four on 

 the other was bred from a larva on Potentilla Canadensis at Fort Lee, 

 N. J, Head with a tiny brown spot behind the eye and dot at back of 

 occiput on vertex. In ultimate stage head whitish, with a leaden 

 patch on vertex. (See Can. Ent., XXVIII, 236.) The larva was 

 intermediate between H. fnaculatns and Monostegia ignota in having 

 but a trace of black spots on the head, and the imago was also interme- 

 diate in the number of submarginal cells. 



Variety coryli, var. nov. 



This larva is single brooded, disappearing before the middle of 

 June. Found not uncommonly on the hazel at Plattsburg, N. Y., and 

 VanCortlandt Park, New York City, in some cases rather destructive to 

 the plants. I suppose this larva to represent a distinct species and re- 

 ferred to the larva as "5F" in Can. Ent., XXVII, 339. It differs in 

 what seem good specific characters from the larva of H. maculatus, yet 

 I do not find any differential points between the flies. 



Solitary, usually out straight, sometimes curled, sitting on the 

 under side of the leaf. Head faintly testaceous, a diffuse leaden black 

 patch on the vertex behind ; eye in a black spot; width 1.2 mm. The 

 black spot reaches well down the side of the head, but the whole face is 

 pale; a trace of white bloom. Thorax a little enlarged, abdomen 

 scarcely tapering, slightly smaller posteriorly. Dorsum gray to spi- 

 racles, uniform or centrally dorsally on abdomen nearly white; sub- 



