March i897] DyAR : LaRV^ OF SaW-FlIES. 2T 



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 distincdy 

 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 iV. brunneus (Can. Ent., 

 xxvii, 342). The final decision makes it a new species. 



Amauronematus azalise Marlatt. 



Solitary edge-eaters on Azalea; found at Jeff'erson, 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- 



