June-Sept. 1S94. 



PSYCHE. 



137 



they are gray, forming slight dorsal tufts. 

 On joints lo niid ii a medio-dorsal Whitish 

 retractile tubercles. 



Stage IV. (?)— Width of head 1.65 mm. 

 As before, but the hair pencils from joint 2 

 are more distinct and there is abundant gray 

 hair from the dorsal warts of joints 3, 4, 6, 7 

 and S. Some larvae hibernate in this stage. 



Stage V. ( ?) — Mead black, labrnni and 

 antennae whitish ; widtli 2 mm. Dorsum 

 covered by feathery gray hairs; but the 

 whitish retractile tubercles are exposed. 

 Black hair pencils on joint 2 and square tufts 

 on joints 5 and 12 as before. 



This is the hibernating stage. 



Ii'oott plants. — Oak (Qiiercus), Hickory 

 (Carya) and wild cherry {Prunus serotina). 



Parorgyia achatina larva ditiers from that 

 of P. leucofhaea in lacking the pair of black 

 hair pencils which are present in the latter 

 on joint 13. 



The synonymy given above for the two 

 species of Parorygia is the same as that given 

 by Dr. Packard (5th rept. U. S. ent. comm. 

 pp. 135-13S) except that I regard obliqnata 

 as the form of achatina in which the longi- 

 tudinal black bar is absent (see Seifert, Ent. 

 Amer. iii. 96) and not as a synonym of 

 leucophaea. Further, I regard P. cinna- 

 momea G. and R. and P. flagiata Walk, as 

 distinct species. In confirmation of this 

 view, I have found a single larva on the hop- 

 hornbeam in Ulster Co.. N. Y., June S, 1S87, 

 which differed from both those described 

 aliove. It had two pair of black pencils and 

 four tufts mixed with very feathery white 

 hairs besides eight smaller dorsal tufts and a 

 series of small lateral pencils. The retractile 

 tubercles were red. Head black, body whit- 

 ish, hair whitish gray. I was unable to 

 obtain a moth from the larva, and have not 

 met with it since. It seems likely that it 

 mav have been Parorgyia ciiiiuniioinea. 



Lebena oviLLA Grote. 

 I have observed two stages previous to the 

 last one which has been described by Dr. 



Packard (American Naturalist, xviii, 726). 

 In these stages the larva is largely green and 

 rests on the back of a leaf; in the last stage 

 it is gray and hides by day in crevices in the 

 bark. Its colors are well adapted to the sur- 

 roundings which its habits lead it to choose 

 at different periods of its life. 



Stage II. (.')— Head pale \ellowish, 

 mouth darker; width 0.45 mm. Body light 

 green, the w"art i on joint 7 blackish brown 

 with a small brown dorsal patch and faint, 

 broad, greenish white dorsal band. Other 

 warts pale; hairs mostly pale, a few stiff, 

 dark ones. Length of larva about 4 mm. 



Stage III— Much the same. Width of 

 head 0.60 mm. 



Stage IV. (?) — Width of head 0.S5 mm. 

 Much as in the next stage, though still 

 largely green. Markings brownish, clouded ; 

 dorsal line scarcely continuous. Warts pale, 

 except wart i on joint 7 which is black. 



Stage VI. > (Last stage).— Head slightly 

 bilobed, about as wide as high, full, well 

 rounded; ground color white, shining, 

 marked with dense black mottlings, forming 

 a black patch over the vertex of each lobe, 

 and largely covering the clypeus, leaving the 

 sutures white; width 1.5 mm. Body flat- 

 tened, projecting subventrally, abdominal 

 feet present on joints 8-10 and 13 only. 

 Three rows of warts on every joint, row i 

 subdorsal, central; ii superstigniatal, ante- 

 rior; iii substigmatal on a projecting ba.se 

 and iv smaller, on joints 3-11 subventrally. 

 Hair fine, radiating, not abundant, but 

 thickest and longest from the warts of row 

 iii. Color sordid white with a black dorsal 

 line and several irregular and confused, 

 crinkled, blackish lines along the sides, 

 giving a dark gray appearance. On joints 

 2-4, 7 and 11-12 the dark color predominates 

 dorsally, forming diffuse, clouded patches, 

 through which the dorsal line is less dis- 

 tinctly defined by white than elsewhere. 

 Thoracic feet brownish. Warts all pale, 

 some of row i tinged with black. Hair black 

 and white mixed. Venter sordid while. 



