MEMOIRS OF THE ^^ATIOXAL xVCADEMY OF SCIENCES. 
277 
ring and a costal spot. Fringes white. Under surface fuliginous, witli tlie borders white, the 
costal and terminal marks mostly repeated, and with two duskier shades across subterminal 
space. Secondaries fuliginous, with terminal black spots between the veins; lunule and two more 
or less distinct transverse bands duslcj^; fringes white; under surface jialer, with the dusky 
bands more strongly relieved. Head beneath, front femora and tibiai inside, two spots on middle 
and hind tibim, tarsi, pectinations of anteniije, a mark (obsolete in one specimen) betw^eeii eyes 
and bases of Avings, across the shoidders, around the tegulm, and at base of thorax, a spot on 
each tegula and two in middle of thorax, and a transverse band on anterior edge of each joint 
superiorly, browm-black. 
‘^Alar expanse, 1.25-1.50 inches. Length of body, O.GO-0.75 inch, 
‘^Described from three $ , one bred by myself, one by Miss M. E. IMurtfeldt, of Kirkwood, Mo., 
and one by J. K. Muhlemaii, of ^yoodburn, III. — all from willow-feeding larvie. In each case the 
larvre w'ere supposed to belong to borealis, and no critical descriptions Avere taken. The variation 
is not great; in one specimen the Avings arc noticeably shorter and more rounded than in that 
chosen for my figure, and the marks on primaries are less clearly delined; the bau<ls on secondaries 
are also scarcely indicated, or only by faint si)ots on the veins, while the costal marks on primaries 
inferiorly coalesce so as to form but tliree broad marks. 
“The eggs of Gerura are hemispherical, i. e., very fiat on the attached side; and while the 
larvie of multiscripta and borealis resemble each other, their eggs are easily distinguished, those 
of the former being pale yellowish green and those of the latter jet-black, 
^^Tho species approaches nearer to the European bicvsjfis than to the North American borealis. 
I am unacquainted with the scitiscripta Wnlkov of Grote and Robinson’s “List,” but as Mr. 
Grote has seen mulfiscrijjta and pronounced it new, 1 luu^e no hesitancy in describing it.” 
Of these two specimens, one is like the Candida of Lintner’s description in the hind legs 
being entirely Avhite above and beneath, with no marginal black dots. In the other examples the 
dots are minute, though distinct, showing that they are on the a erge of extinction. 
MuUiseripta also varies in our examples from New^ York (Doll); the hind wings are Avhite 
above and beneath, and another is intermediate betw’cen the foregoing example and those Avith 
dark Avings. The thorax also varies in the amount of black markings, and the two hinder lines 
are AAmnting. 
The following notes on the preparatory stages of Gerura mnltiseripfa Riley, by Dr. Dyar, 
are copied from I*syche, vi. 
— Slightly more than heinisphorieal, the base flat, dead sordid Avhite, covered with many short, dark-browu 
hairs irregularly laid on and distributed also on the parts of the leaf adjoining. Diameter, 1.3 miii. Laid in groups 
of five or less on the under surface of a leaf, 'fhese eggs had hatched w'heu found, the larva having emerged from 
a hole ill the side, leaving the rest of the shell intact. 
First Mage, — Head subquadrate, depressed at tlio vertex, black and shining. Width, 0.6 nim, llody furnished 
with minute tubercles, a spined process at eacli side of the cervical sliield and two tail-like appendages which take 
the place of the anal feet. Color black throughout, a little paler A^entrally. 
Second Biage. — Head rounded, minutely punctured, Avith a tubercle below the vertex of each lobe. C()lor 
purplish black, a little paler about the sutures of the clypens (triangular plate). A few short hairs. Width, 0,1) mm. 
The body has several rows of minute piliferous tubercles, two large, thick, heavily spiuose cervical horns on joint 
2; tails long, sharply spinose, shiny black, the extensile threads purx)le black, whitish at base, llody velvety 
purple black, the venter greeiiisb. Length (T body, 1 mm. ; of tails, -1 mm. 
Third stage. — Head with two tnhercles before the ajiox of each lobe, one in the center of and one each side of 
the clypens. Color, dull black, clypens and mnulh reddish, ocelli black, antenme pale. Width, 1.3 mm. Cervical 
horns thick, heavily spinose, the spines liliiut and each tipped with a hair. About six rows of elongated, pilifei'ous 
tubercles on oaeh side, alternating anteriorly and posteriorly on each segment. Tails long, heavily spinose, black, 
the extensile threads brown, white at base, liody and legs greenish yellow, a black dorsal hand covering Mio 
cervical horns, narrowing to joint 4, where the dorsum is angularly eleA’ated, w'idening to near the spiracles on joints 
8 and 9, then continuing evenly over the subdorsal siiace to the last segment. Spiracles narrowly black ringed. 
Length of tails, 5 mm. 
Fourth stage. — Head dead purple-hlack, greenish at the sides ])Osteriorly, the u]>per half sprinkled with little 
yelloAvish dots, but leaving a lino of the ground color each side of the central suture. 
Clypens and mouth i^aler and shiny, antennje whitish, ocelli black. Width, 2.1 mm. Body as before, 
considerably elevated dorsally at joint 4, with a rounded pinkish dorsal ])roceS8. Cervical shield large, jiiirplisb 
black ; the horns rather thick and short, heavily tuberculated. Body yellow-green ; the dorsal stripe black us liefore, 
but a little purplish; spiracles white, Avith a fine black border, the posterior ones more or less surrounded by black. 
