122 Journal New York Entomological Society. [Volvi. 



sordid ground, mouth brownish. Feet on joints 6-1 1 ; no glands everted. 

 Segments coarsely 4-annulate with small dark seta;. Color dull green, 

 the spiracles with faintly discolored yellow blotches ; dorsal region 

 shaded with black, the color streaked on the annulets, not forming a 

 distinct regular edge and not complete, tending to be broken into dor- 

 sal and subdorsal bands. Subventral folds double. A spot below the 

 spiracle and one above the base of the leg, black. Thoracic feet and 

 venter pale. Imago in May. The species is probably double brooded. 

 The larva looks like that of Pteronus corylus. 



Pteronus integer Say. 



Dr. Packard describes a larva on spruce (5th Rept. U. S. Ent. 

 Coram., p. 838) as of this species. It is green with a dusky supra-ocellar 

 shade, the dorsal vessel edged with light green and a white lateral stripe. 

 The number of feet is not given. 



I think there is some error here and that this larva is not that of in- 

 teger. The true larva is described herewith. 



Stage V. — Head sordid greenish with a heavy brown-black shade 

 reaching up each side behind the eye, a dotted shade on vertex, the 

 sutures pale; width 1.6 mm. (9). Body green like Nematus chloreus 

 not very sordid nor very transparent ; black marks at the base of the 

 thoracic feet. Segments irregularly 6-annulate in this large larva, 

 bringing the spiracle on third annulet, 5-annulate in another with spiracle 

 placed normally. No other marks. Anal plate concave-truncate as in 

 N. chloreus. The larva is throughout closely allied to chloreus and 

 differs only in having the head marked with dark shades in the last 

 stage. Tracheal line visible. 



Single brooded, no ultimate stage ; cocoon as usual in the earth. 



Found on Quercus tinctoria at Brookhaven, Long Island ; not com- 

 mon, the rarest of the oak feeding Nematids 



Pteronus quercus Marlatt. 



Solitary on white oak ( Q. alba) resting on the edge of the leaf. 



Stage IV. — Head round, eye black, a very faint posterior dark 

 shade; width .9 mm.; whitish, sordid with scarcely any ochreous 

 tint. Body colorless, translucent, appearing sordid from the food by 

 transparency, the incisures folded; segments obscurely 4-annulate, 

 smooth ; anal plate concave-truncate, no prongs. A large black spot at 

 the base of the colorless thoracic feet ; abdominal ones on joints 6-1 1. 

 Tracheae white. 



Stage V. — Head 1.3-1.5 mm. ( $ 9 ) colorless, faintly yellowish, 



