278 
MEMOIES OF THE NATIO^fAL ACADEMY OF SCIENCES. 
Tails lieavily spinose, black ; length, 7 mm. The piliferons tubercles of the body are very small, those on the lateral 
region -white, besides many small lateral white spots. A narrow, yellowish, stigmatal lino. Two erect, spiny, black 
hairs beyond the anus. 
As the stage advances, the spines on joint 2 become partly white, the dorsal baud partly striated and 
indistinctly bordered anteriorly with white; the stigmatal line just below the spiracles is white, and there is a 
general ai)proach to the next stage. 
Fifth 8iaiji \ — Head rounded, rather Hat in front, shagreened. Color black, green at the sides posteriorly, a large 
band in front as wide as the space between the eyes at base, but narrowing to the vertex, sordiil white, mottled a 
little with the ground color. Labrum whitish ; maxilbe black; antenuje white. AVidth of head. 3.7 mm. Cervical 
shield large, angnlated at the corners, without any horns or spines. Beneath it the head cun be partly retracted. 
Body angularly elevated at joint t, with a dorsal, deshy process. Tail 9 mm. long, whitish above and green below 
at the base, the rest purple wdtb black spines. Extensile threads yellowish at base, then red, fading to yellowish 
again toward the ends. Body green, a hroad white dorsal bund edged with white, confusedly striated on a purple 
ground which soon hocomes green, a little purple on joints 2-4, decidedly so on the anti^rior corners of the cervical 
shield (wdiere it shades into pinkish in the fold of skin behind the head), on the hump on joint 4, and on joint 8 
subilorsully in the angle of the baud. It begins broadly on joint 2, covering the cervical shield, narrows to the 
process on joint 4, wddeus to just above the spiracles on joint 8, and gradually narrow's to joint 13, w’bere the anal 
plate is greenish. A distinct white substigmatal lino, edged below with brown ami narrowdy above with black, 
absent on joint 2 and turned up at its anterior end. Many small lateral white decks. Spiracles black, white 
centrally. Thoracic feet twdeo lined with black longitudinally; abdominal, once. transversely, the chi8])er8 tipped 
with black. Length, 25 mm , exclusive of the tails. The erect spines beyond the anus whitish. When the larva 
has finished eating, all the white of the dorsal hand exce]>t its borders fades out, leaving the back green and the 
cervical shield pale blue. 
Cocoov, — Formed on wood, of gummy silk, strengthened by many little pieces of bark and Avood bitten off from 
the inside, thus forming a hollow. It is elliptical, just large enough to contain the larva, and becomes very hard, 
closely resembling a lump or excrescence on the bark. 
Pupa. — Cylindrical, tapering a little toward hotli ends, the last twm abdominal segments rounded and 
appressed, the others capable of motion; no cremaster. Eyes iiromiuent; a narrow' carinated ridge runs along the 
bead from betw'oeu the eyes to the back of the place of origin of the antenna*. Cases creased and very minutely 
punctured, not shiny; eyes and body sublustrous, the latter minutely granulated at the anterior half of each 
abdominal segment; 8i)iracles distinct. Color dark reddish hroAvn, Avith a blackish shade over the dorsum. 
Length, 18 mm.; greatest Avidth, 6.5 mm. Fupatiou occurs in about tw'o Aveeks after the comiiletion of the cocoon, 
and the insects remain in this stage throughout the winter. 
Egg, — The eggs are said by Professor Kiley to be hemispherical and pale yellowish green, 
while those of G, borealis differ in being Jet-black. On the other hand Dr, Dyar tells me that the 
eggs of all our Cerura are black, except those of multlseri])ta which are covered by the hairs from 
the body of the moth. 
Habits. — ]\rr. F. Tepper foiind the larva of this fine moth on the willow July 30; a male imago 
emerged August 30 and a female September 30 (Bull. Bi’ooklyii Ent. Soc., i, 4). jS'o description of 
the larva was published. The life history has been fully described by Mv. Dyar in Psyche (v, p. 
303), which we have copied. It remains to be seen whether the larva of the white form, 
scitiscripta^ differs from what we should call the melanotic form, multiscripta. 
Food plants. — Difierent species of willow aud poplar, also wild cherry. The figures on, pi. — 
were drawn from a specimen found on the wild cherry September 10, at Providence, E. I. Mrs. 
Slosson has raised it trom the pomegranate in Florida. 
Geographical distribution. — Its range extends throughout the Appalachian and Austroriparian 
siibprovinces, passing into the eastern limits of the Campestrian (Kansas). It is to be observed 
that the pale whiter form, inhabits the Austroriparian subprovince (Florida, Georgia to 
Kansas), Avhile the darker form, with heavier black lines and spots, has thus far only occurred in 
the Northern States. It has not yet been reported from any of the .'New England States; eastern 
New York (Dyar, Doll, Elliot); Illinois aud eastern Missouri (Eiley, United States National 
Museum); Kansas (Lintner ex Strecker); Manhattan, Kans., August 10 (Popenoc); Jacksonville, 
Fla. (Mrs. Slosson); “Georgia” (Dyar); New York, Missouri, Texas Eiley’s notes, 
Uuited States National Museum); multiscripta.^ New York, Garboudale, 111.; var. scitiscripta^ 
Illinois, Georgia; Candida., New York, Kansas (French); multiscripta., New York, New Jersey 
(Palm). 
Eiley mentions a “new species” of Cerura from Owens Yalley. (Merrian’s North Ainer. 
Fauna, No. 7; The Death Valley Exp., Pt. 11, May 31, 1893, p. 245.) 
