MEMOIKS OF THE NATIONAL ACADEMY OF SCIENCES. 
101 
spot i^reseiit, tlie apical region being reddish brown. Within is a regularly curved light line. In 
the middle of the wing is an obsolete reddish line. 
Hind wings discolored with red along the median vein, there bending into the middle of the 
internal margin; this is faintly continued n])on the costa. A siibmarginal Avhiteline. Fringe on 
the internal angle, reddish brown. The lateral tufts on the end of the abdomen reddish brown. 
The female only differs in the much broader wings. . 
Expanse of wings, S -to mm., 9 50 inm.; length of the body, S 20 mm., 9 24 mm. 
Var. iloridana Edwards, much redder, lines fainter, the discal Avhitish spots more clearly 
defined. Beneath, wings foxy red. (Coll. Ainer. IMus. Nat. Hist., New York, and Coll. Nenmoegen.) 
The following notes are based on the sketches and notes made for me by j\Ir. J. Bridgham, 
who kindly xmeserved for me in alcohol specimens of the two later stages, from Avhich, with the 
aid of his excellent drawing, the following description of those two stages were drawn uja. Irj 
appears that there arc six larval stages. 
Egg . — The eggs Avere laid on the wild cherry June 22, and hatched July 0; another lot 
received from Mi.ss ^Morton, hatched July 5-(i, They are much ilattened, resembling a very 
shallow inverted jfiate, with sloping sides. The surface appears as if covered with oveiiapi)ing 
rings, each inclosing a circle of five, six, and sometimes scA'en sx)ines. Diameter, 1 mm. 
Miss Caroline (I. Soule describes the eggs as at first green, and five days later sordid 
yellowish white, circular, fiat on both top and bottom, translucent, and looking like tiny gelatine 
lozenges, 1.5 mm, in diameter. 
Lixrva^ Stage I. — Length, 4-5 mm. Head and body jiale greenish white or Avliitish fiesh, with 
no black or dark marks; head moderately large; body covered thickly with long Avhite hairs, 
mostly curled, AA'hich arise in irregular and scattering tufts from four dorsal and three lateral 
tubercles; the hairs arising from the thoracic are rather longer than those from the abdominal 
segments. 
Larva., Stage II, — Length, 0 mm., July 10. Much as iu the first stage, the hairs a little 
denser, and the head and body still whitish, AA'ith no dark s^Aots, 
Miss Soule says that after. the first molt the larva becomes “even whiter and Huffier than 
before, with a dorsal line of black dashes, and a dark pencil on the tenth segment. A few had gray 
hairs over the head.’’ 
Larva, Stage III, — Length, 11 mm., July 25. Color of the head and body the same, but the 
woolly Avhite hairs on the thoracic segments a])pear to be thick and matted. Now appears along 
the back of each abdominal segment a conspicuous black dash, and from the eighth abdominal 
segment arises a long, slender, tajAering black pencil, Avhich projects backward. 
Miss Soule says: “As before, with the addition of a gray pencil on the second and third 
segment.” 
Larva, Stage IV. — Length, 20 mm,, August -1. The head is yelloAvish white, but the body 
slightly lAale gray. From the second and third thoracic and eighth abdominal segments arises a 
black ijencil, each about the same length as the other, viz, about twice as long as the thickness 
of the body; the anterior ])encil points forward, the two others backward. The interruxAted black 
dorsal stripe is as before. 
M4ss Soule states that in this stage “ a lateral and subventral line of black arrowheads 
aiApeared. One larva became bright yelloAV, with the x^encils tan colored, Avith black tips, and one 
was of a soft gray, Avith black x)eudls.” 
Larva, Stage V. — Length, 27 mm,, August 7, (This and the last stage described from alcoholic 
specimens as Avell as from Mr. Bridghaui’s colored draAviiig.) Head normal, rounded, the sides 
and toxA someAvhat SAvolleu, the median suture someAAdiat deiAressed: of a x)ecnliarAvhite-tlesh color. 
Prothoracic segment Avithout a pencil or a lateral black x>atch; second thoracic segment Avitli two 
contiguous rounded tubercles from which arise two long x^eucils whose hairs blend together to 
form a common median deep ocherous pencil inclined forward, becoming black at the distal 
third. Third thoracic segment Avith a similar x^^iicil inclined backward. A similar median 
pencil on the eighth abdominal segment. There is now a dorsal row of six long median black 
stripes on abdominal segments 2 to 7. Between these sxAots arise a x*aii‘ of dorsal x^eucils 
composed of curious long sx)indle'Shax)ed flexible black hairs, x>i*le at the base, which taxAcr from 
