130 Journal New York Entomological Society. [Vol. vt 



9 . Reddish brown and black. Head black, tip of cljpeus and labrum pale brown. 

 Thorax browD, a black spot on each lobe, lower half of pleura and pectus black ; pro- 

 thorax and tegulse whitish. Abdomen brown, shaded with black on each segment, 

 the basal four segments solidly black ; ovipositor sheath black ; all the segments above 

 and below narrowly lined with whitish posteriorly. Legs reddish, coxse black, tibiae 

 whitish and tarsi dusky. Middle cells of hind wings one or none. The larva re- 

 sembles that of P. diluta as far as that description goes. 



Stage III — Head black, a pale dot at apex of clypeus ; width .6 

 mm. Body green, food darker, the four dorsal spines on each side 

 black with white limbs. 



Stage V. — Head pale in sutures and face, all the black marks touch- 

 ing each other ; width, i mm. Body green, dorsum faintly shaded with 

 purplish ; spines as before, all distinctly furcate. 



Stage VI — Head pale, the lobes broadly black and a geminate 

 spot in clypeus; width, 1.4 mm. Segments indistinctly 5-annulate, two 

 spines on second (spiracular) annulet, one small one on third behind 

 spiracle, three on fourth; two on each subventral fold. Legs on joints 

 6-12, 13 ; rest on venter on surface of leaf. Dorsum to spiracles oliva- 

 ceous blackish, the four dorsal spines black, short with short limbs or 

 reduced to small black buttons' ; joint 2 anteriorly, subventral region 

 and feet pale greenish white with colorless furcate spines which fringe 

 the sides. The dorsal spines on joints 2, 3, 12 and 13 are not reduced. 

 At the end of the stage the dorsal color fades to purplish. 



Stage VII — (Ultimate.) Smooth, no spines, annulets folded ; 

 shining areas represent the tubercles ; color translucent waxy greenish 

 white, greener on the thorax, often blue-green ; no purple shade. The 

 larvse enter the earth and form cells lined with brown secretion. Soli- 

 tary on the white oak in May, eating the young leaves; single brooded. 

 Found at Pelham Manor and Bellport, Long Island, N. Y., Washing- 

 ton, D. C. 



Periclista albicollis Norton. 



Stage IV. — As in next stage ; head .7 mm. 



Stage V. — Head shining black except mouth and a small arcuate 

 line above clypeus which are greenish ; width, 1 . 1 mm. Spines arranged 

 as in the preceding species, quite large and strongly furcate, all black, 

 even the little one on third annulet and the anterior one of the upper 

 subventral fold ; lower subventral spines pale, not furcate. Body trans- 

 lucent green, indistinctly annulate. Feet on joints 6-12, 13. 



Stage VI — Head 1.4 mm. The same, the spines with long tapering 

 limbs, longer than the shaft. 



