180 Journal New York Entomological Society. [voi.viii, 



brown on the thorax, elsewhere faintly luteous. Venter pale, trans- 

 lucent. Feet pale, the abdominal ones very short with crotchets in 

 an ellipse. Spiracles black. During this stage the larva left its net 

 and constructed a rude case by uniting two leaves and partly biting 

 them around. It spun a few threads across the opening. 



Stage VI. — Head 2.7 mm. (in small male larva), round, higher 

 than wide, the apex a little under joint 2 ; clypeus very small ; surface 

 wrinkled, shagreened ; pale yellow, heavily mottled with brown spots 

 which form streaks above the clypeus and leave a pale space above on 

 the face of each lobe. Body dull greenish yellow in straight dorsal 

 and in slightly oblique and dislocated subdorsal, lateral and suprastig- 

 matal lines, the subventral line straight and running along the promi- 

 nent subventral fold. Spaces between these lines filled in with dark 

 brown at the extremities only ; /. e., in three bands on thorax and 

 subventually and in irregular spots on joint 13. Spiracles black 

 rimmed. Cervical shield large, with two brown bands on each half. 

 The posterior part of joints 12 and 13, which is dark spotted, becomes 

 transversely folded and assumes, imperfectly, the appearance of a 

 round area, a little flattened, about the size of the hole in the case. 

 The case is made of two leaves or of a single leaf bent over and cut 

 off, the holes at the end made circular by thread. At the end of the 

 stage the larva spins up one end of the case and hibernates. Pupation 

 in the spring. A single brood in the year. 



Food-plants, all the oaks, Q. alba, Q. /?ii>wr, Q. cocci nea. Q. tinc- 

 toria, Q. nana. 



EXPLANATION OF PLATE VL 



Fig. I. Egg shell, side view, enlarged. 



Fig. 2. The same, end view. 



Fig. 3. Larval net, stage I, enlarged. 



Fig. 4. Larval net, stage IIL 



tig- 5- Case of mature larva. 



Fig. 6. Larva, dorsal view. 



Fig. 7. Head of larva, enlarged. 



Fig. 8. Moth of Lacosoma i/iiridota. 



Fig. 9. Larval case of Ciciniius despeda Walk. 



