26 Journal New York Entomological Societv. [Voi. v. 



Stage 11. — Head, calculated, .75 mm. All blackish. 



Stage III. — Head 1.2 mm., shining black. Body black, immacu- 

 late at first ; later, in some, faint yellow lateral spots as in P. ventralis. 



Stage IV. — Head black, width 1.6 mm. Body greenish, tubercles 

 and streaks on the annulets slaty black, not entirely confluent, leaving 

 some of the green ground color especially dorsally and laterally ; orange 

 spots distinct ; feet colorless. 



The males spin at the end of this stage, or at least with this colora- 

 tion and width of head. 



Stage V. — Head 2.2 mm. Coloration as described for F. hiidsonii 

 (see Trans. Am. Ent. Soc, xxii, 306). Anal prongs short, black tip- 

 ped. 



Found on Popiilus grandidentata at Jefferson Highlands, N. H. 

 Apparently the same larva also on willow at Greenwood Lake, N. J., 

 and received from Mrs. Slosson from Franconia, N. H. There is more 

 than one brood in the year. 



Pteronus ostryse Marlatt. 



Head 1.6 mm, pale testaceous, a black patch at the vertex, eye 

 black. Body all green, tar brown on the folds, annulate, not shining, 

 no marks, no set?e. 



This larva fell to the ground while I was examining a hop hornbean 

 tree. It was ready to spin and I have not observed it feeding or in the 

 appropriate coloration, 



Amauronematus oregonensis Marlatt. 



Whitish green, pilose, solitary on woolly willow at Keene Valley, 

 N. Y., and Jefferson Highlands, N. H. It has just the appearance of 

 the back of the leaf. 



Whitish green, a white addorsal and stigmatal line, produced by 

 the edges of the dorsal vessel and the tracheal line, supplemented by a 

 few white granules under the skin laterally. Segments 3-annulate, 

 with concolorous warts on each annulet, bearing short white pile. 

 Feet on joints 6 to 11 and 13. Thoracic feet colorless outwardly, 

 greenish at base. Head same color as body, eye and mouth black ;. 

 width 1.2 to 1,4 mm. 



Ultimate Stage. — Head shaded with pale blackish, eye black; 

 width as before. Body greenish parafhn color, shaded with black on 

 the three annulets except for a central subdorsal space on each, in a 

 narrow dorsal line and in stigmatal spots, and spots on the subventral 

 folds. No setae, the dark spots representing the warts. Feet colorless. 



