March 1897.] 
Dyar : Larwe of Saw-Flies. 
27 
Both now and in the previous stage (except for the hairs) very like the 
following species. 
This or the following larva is described by Dr. Packard in the 5th 
Report, U. S. Entomological Commission as “unknown saw fly larva" 
on page 589, number 72 of willow insects. 
Amauronematus similis Marlatt . 
Straight, solitary on woolly willow at Plattsburgh and Keene 
Valley, N. Y., and Jefferson Highlands, N. H. 
Abdominal feet on joints 6 to 11, very slight on 13. Head whitish, 
a little mottled with green, not shining; width 1.4 mm., eye and mouth 
black. Body a little flattened, subventral region rather prominent, the 
posterior segments slightly tapering. Color soft leaf-green, not yellow¬ 
ish, not shining; a distinct white subdorsal line, the pair approaching 
and nearly touching on joint 13; the line sends down a mottled white 
streak on all the annulets as far as the tracheal line, sometimes separated, 
forming a lateral line of streaks, A few obscure white dots ventrally. 
The white bands and streaks are composed of white granules below the 
skin. Feet pale, thoracic ones clear. Segments not very distinctly 
6-annulate, no tubercles; spiracles minute, brown. 
The larvae feed resting on the edge of the leaf. In some examples 
there are small black dots on the thorax and subventrally on the ab¬ 
domen. 
Ultimate Stage .—Slightly shining, light green, translucent like 
ground glass, uniform. Segments 6-annulate, the second and third larger 
than the others. Dorsal vessel a shade darker, its sides showing faintly 
whitish ; tracheal line narrow, thread-like. 
Later the larva is shaded with blackish on all the annulets and the 
top of the head; bores in soft or decayed wood to pupate. 
Amauronematus dyari Marlatt. 
Larvae described by me (Can. Ent., xxvi, 187) as Nematus mono- 
chroma; later determined by Mr. Marlatt as N. brunneus (Can. Ent., 
xxvii, 342). The final decision makes it a new species. 
Amauronematus azaliae Marlatt. 
Solitary edge-eaters on Azalea; found at Jefferson, N. H., in June. 
The larvae all disappear before the end of June, and there is only one 
brood in the year. 
Head a pale green, finely brown-dotted except a narrow space bor¬ 
dering the brown clypeus; eye black; width 1.2 mm. Segments irre- 
