4 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. GU 



a rather small spiracle; alar area bilobed— the anterior lobe, below 

 C^, smaller and Avith a smaller, usually unforked spine — posterioi' 

 lobe, below C^, larger and with a large bifurcate spine; pleurum; 

 preepipleurite and postepipleurite with 2 spines each, the anterior 

 frequentl}^ bifurcate or trifurcate, the other three becoming smaller 

 and often unforked posteriorly; hypopleurite and uropods present 

 and without spines. 



Color. — Head: Paler green than body; eye disks black; mouth- 

 parts brownish; antennae green and prominent. Body: Leaf green, 

 alimentary canal darkened in center; spines white; legs semitrans- 

 parent, pale green with brown hook. 



Prepupa. — 



Size. — Length, 9 mm. Head: 1.25 mm. high by 1.25 mm. broad. 



Structure. — Spineless, smooth, uropods somewhat reduced; other- 

 wise same as larva. 



Color. — Head : Wliite ; eye disks black ; apices of mandibles black- 

 ish brown. Body : "Wliite ; hooks on legs, the only darkened portions 

 of body, brownish. 



Cocoon. — Length, 6.5 mm. by 3 mm. broad. A blackish brown, 

 single-walled case, with particles of sand or earth adhering. 



Host. — Hworiu^ species. 



Remm'hs. — Described from material collected May 24, 1913, at 

 Charter Oak, Pennsylvania, by Thomas E. Snyder and recorded 

 under Hopk. IT. S. number 11364. The larvae feed from the under 

 surface of the leaf, eating small holes. All the larvae had finished 

 feeding and had entered the ground to spin their cocoons bv June 6, 

 and on IMay 7 of the following year adults emerged in the rearing 

 cage. 



PERICLISTA SIMILARIS Rohwer. 



In Dyar's* Synopsis this species runs to Pern-lhtti alhlcoWiH., but 

 appears to be nearer P. pvrptiridorsum in that alhicollis has a tuber- 

 culate prepupa while the prepupa of similaris and purpuindorsuin 

 are spineless and in that the larvae of these two rest on the under 

 side of leaves, wdiile the larvae of albicollis rest on the upper side. 

 It is separated from P. purpuri dorsum of the table, hy being pale 

 green, not darkened dorsally. 



Larva. — Stage VI. (Larva in poor condition.) 



Structure.— Head : Face view, circular in outline; epistoma and 

 labrum each with four spines; epicranium and frons sparsely spined ; 

 antennae of the telescopic type with 5 joints ; eye disks not elevated, 

 eyes slightly convex ; maxilla with palpifer and 4-jointed palpus, 

 lacinia, broad and flattened with a number (8) setae arranged on the 



* Dyar, Journ. N. Y. Ent. Soc, vol. 6, June, 1898, p. 136. 



