96 



PSYCHE. 



[June 1S91 



as before; the dorsal band of nearly uniform 

 width, retracted at the sutures, hardly dis- 

 tinctly wider on joint 7. considerably widened 

 on joint 11, expanded on joint 2 to cover the 

 rudimentary horns and faint on the anal 

 plate. Length after molt, 15 mm. As the 

 stage advances the broad inner borders of the 

 bands on the head fade out near the bands 

 leaving a white line bordering the clypeus 

 and central suture; the dorsal band becomes 

 partly mottled with its white borders which 

 are yellow at the sutures; there is a trace of 

 a yellow stigmata] line and the sides have a 

 few black specks at the extremities. Spira- 

 cles ocher, surrounded by yellow. 



Fifth stage. — Head rounded, flat in front, 

 pale green, the broad brown bands extending 

 from before the ocelli to the vertex of each 

 lobe slightly mottled and bordered behind 

 with yellow and before faintly with white. 

 A white line starts on each side of the clypeus 

 a little above its base and borders it, running 

 close to the central suture and becoming 

 merged at the vertex in the .borders of the 

 brown bands; ocelli and maxillae inwardly 

 black; mandibles and antennae white; width 

 3.2 mm. Body as before, cervical processes 

 absent, stemapods relatively shorter (2 mm). 

 Color green, a broad red-brown dorsal band 

 mottled and streaked on a white ground, ex- 

 tended in two small distinct spots on joint 2 

 which represent the cervical "horns" and on 

 joint 11 containing a V-shaped brown line 

 which is repeated more faintly on joint 12. 

 The stemapods are white, brown inwardly 

 and speckled with brown outwardly with a 

 few minute hairs. In the segmental sutures 

 the dorsal band is slightly retracted and is 

 yellow; a narrow yellow sub-dorsal- line and 

 a waved suprastigmatal line besides a stig- 

 matal line on joints 3 and 4. Spiracles ocher, 

 paler centrally and surrounded by a whitish 



shade; a white subventral band on joints 

 11-13. Feet concolorous with body. A num- 

 ber of dark purple specks over the sides es- 

 pecially on joints 2-4 and 1 1-12. As the stage 

 advances a marked change takes place. The 

 head becomes finely reticulated with brown 

 except on clypeus and mouth and the white 

 marks become faint ; the body except in the 

 dorsal band and on the venter is heavily 

 spotted with brown, the spots small but so 

 thick that some become confluent. They tend 

 to segregate in parallel longitudinal lines 

 between the lateral yellow lines and are ab- 

 sent on the cervical shield and anal plate 

 which are both large, the former semicircular. 

 The color of the body fades to sordid greenish 

 white and the brown of the dorsal band fades 

 out leaving it creamy white with a fine brown 

 line very near each edge, brown interseg- 

 mental marks, a broad brown central streak 

 on joint 7 and on the anal plate and the ir 

 regular V-shaped mark on joint n. The 

 spiracles are each surrounded by a brown 

 ring. Length at maturity 50 mm. 



Cocoon. — Formed between two leaves: 

 semi-transparent, similar to that of Schizura 

 leptinoides but less perfect and weaker. 



Pupa. — Cylindrical, gently tapering to the 

 extremities; thorax and wing cases moder- 

 ately prominent; at the posterior edge of 

 the thorax, a curved row of rounded cutical 

 granulations. Cases densely creased, body 

 more sparsely punctured. The cremaster 

 consists of two separate, short, conical pro- 

 jections, their sharp ends curved almost 

 straight outward, above which is a curved 

 row of about a dozen narrow carinated 

 ridges 0.5 mm. long, parallel to the length of 

 the body. Length 20 mm; width 7 mm. 



Food plant. — Sycamore {Acer pseudo-flan- 

 t 'anus) . 



Larva from Dutchess Co., New York. 



