92 



MKMOIKS OF THE NATIONAL ACADEMY OF SCIENCES. 



Larva, Sfagr IIT. — Li'iigtli, 10 mm. The liead is still large, imu-li wider tliaii tlie body, aiuT 

 green, with a purple stripe on each side. Tlie yellow lines are more distinct iLan before, and the 

 body lias a purplisli tinge. (Described from Bridgham's figure (PI. VIII, fig. — ) observed July 8. 

 I.arrd. Staf/c I V. — Length, 20 mm. In one oliscrvcd .Inly 20, and neai ly full grown, tlic head 

 is still without the lateral black stripe, and the two subdorsal yellow stripes arc very distinct, but 

 there are no pink spots anywhere on the body. The small spiracles are pale orange. 



In another drawn by "Sir. Briilgham (PI. VIII, fig. 4), and also 20 nmi. in length, the head is 

 not banded, but tlie body is i)rcttily sjiotted witli pinkisli red, in the following manner: Two round 

 dorsal spots on the first thoracic segment; a broad jjink-ied transverse baud on the seci nd and 

 third thoracic segments, each broken into two by a transveise median whitish line; on al>dominal 

 segments 3-0 is a jtair of dorsal red, rounded spots, growing larger and more distinct toward the 

 end of the body, there being four spots on the ninth segment. The subdorsal yellow lines are 

 well marked. 



Larva, last (fifth) titajje. — Length, 30 nnn. One found on the aspen August 0, was jtale green, 

 near the color of the underside of the leaf. Head ' smooth, i)olished, darker green than the 

 body, with two black stripes on each side, not meeting above on the vertex. Body green, tajjcring 

 at each end, smooth, nearly hairless, with no pilifei'ous warts, the scattered hairs being minute; 

 two fine subdorsal yellow lines, and Dyar has observed a faint whitish substignmtal line on 

 second and third thoracic segments. Thoracic segments 1-3 each with dorsal pink-red blotches 

 or spot.s, two on tlie prothoracic segment, while those behind are not .so divided. Abdominal 

 segments 3 to 9 each with a consi)icnous pinkred dorsal stpnire spot, the sjjace between the spots 

 more or less yellow; nine on the suranal plate, which is smooth and rounded, while the two 

 subdorsal yellow lines do not meet on it: no .spots or dots on the side of the body below the 



subdorsal lines. Thoracic and abdominal legs of the same color 

 as the body. 



Dyar remarks that it is often associated with Baphia frater, 

 which it much resembles in general structure, though it is more 

 slender. (Psyche, vi, 14<!, September IS.) 



Cocoon. — A Aery slight web of silk spun between two leaves, 

 simply enough silk spun around the edge of the inclosuie to hold 

 the leaves together, the silk mostly confined to the edge of the 

 cocoon, which measures about 22 by 20 mm. The pupa lies very 

 loosely in its cocoon. 



Of very unusual shape, being flattened oval cylindrical; posterior 

 end of the body (fig. .53) much rounded and blunt, smooth, with no distinct traces of a cremaster, 

 much less than in other puj)a> inclosed in cocoons; surface of the body rather smooth, less 

 pitted, and the minute pits or punctuations more distinct and numerous on the dorsal thiin on the 

 ventral surface. In color dark brown, much darker than usual in Notodontinns or other moths. 



Uahit-s. — The eggs are laid the last of June and during the first week in July in Maine, 

 and probably two weeks earlier in southern New England. There are apparently five stages, 

 and the duration of Stage I is about three days, as is that of Stage II, and that of Stage III 

 about five days. 



One larva July 2(1 spun a very slight cocoon between two leaves, and jiupated July 2S. On 

 this caterpillar there were no red spots. 



The moth appeared in the breeding box at Providence May 30, having been brought from 

 Maine in the pupa state; another one appeared June 1, also from Maine, in the larva state. 



Mr. Howard I;. Clark has reared this moth from catori)illars found on the Balm of (Jilead at 

 Warwick, Pt. I. The moth appeared July 22, having been in the cliiysalis state about ten days. 



Hiley states (MS. notes) that the moths occur in May, .June, and .Inly. :Mr. (i. H. Hudson 

 give*< the following dates of capture of the moths at Plattsburg, X. Y.: May 22. 1; May 2!», I; 

 June 3, 1; June .5, 1 ; June 7 to 24, 22; July 10, 1; July 10, 1; .Uily 17, 1; July 20, 1, July 27 to 

 August 13, 30. 



Fi(i. 53. — End of pupa of tHuphisia sejttrn- 

 trioiiii; 9, vestige of <;euital outlt-t t>t' 

 female 



Pupa. — Length, l.VK! mm 



' Dy.ir's ineasurciiieiits of the width of tho head for the f.ist four stages nrv 

 1 11. 1.75, 2.7 mm. Katio, 0.65. 1"oiiih1, 0.7, l.J, 1.7, 2.7 ram. (Psyche, vi, 147.) 



fullows: Calriilatcd, 0.18. 0.74, 



