PAPILIO III., IV., V. 
secondaries fill the interspaces across the whole wing, often taking a lanceolate 
shape ; blue scales sometimes besprinkle the yellow ground quite up to the cell; 
the sub-marginal spots as in the male; in many individuals there appears a stripe 
of blue scales upon the inner side of the marginal border of primaries at inner 
angle. Under side as in the male. 
GLAUCUS, dimorphic form ; always female. 
Upper side black; primaries without markings, except a sub-marginal series of 
yellow spots, which are similar to those of the yellow form, but smaller and often 
minute ; occasionally also there is a yellow lunate spot at the outer extremity of 
the cell, most often indistinct, but sometimes large and conspicuous ; secondaries 
have the spots on both margins, and also the blue band, as in the yellow female; 
the disk nearly to base often thickly sprinkled with blue scales, and always in 
some degree. Under side black or brownish-black ; the black discal bands char¬ 
acteristic of the species are present in this form, distinct on secondaries, but faint 
on primaries, and in the blacker examples partly wanting, especially beyond the 
cell; the marginal black border sometimes distinct, but often only indicated by 
a deeper shade at inner angle, the inclosed spots as in the yellow female. (Plate 
III, Fig. 3, summer brood ; Plate IV., Fig. 2, 3, winter brood.) The larger 
examples of the summer brood often have primaries strongly falcated. 
Examples are occasionally seen of a chocolate-brown color, or of yellow suf¬ 
fused with brown, and in these cases all the bands are distinct; on the under 
side yellow or gray-brown, more or less suffused with black. (Plate V., Fig. 2.) 
Others occur mottled with patches of black and brownish or grayish-yellow. 
(Plate V., Fig. 3.) 
The bi-formed female represented on Plate V., Fig. 4, was taken at Coalburgh, 
and 3 as will be seen, the right side is yellow, the left black, the dividing line 
passing down the middle of the body. This insect is distinguished as belong¬ 
ing equally to two of Hilbner’s coitus, by some esteemed genera, the yellow half 
being a Jasonides, the black Euphoeades. 
Egg. — Sub-conoidal, the breadth and height equal, flattened at base, smooth, 
deep green, soon changing to greenish-yellow, and specked with reddish-brown. 
Duration of this stage eight to ten days. (Fig. a, magnified.) 
Young Larva. — Length, .1 inch; cylindrical, the anterior segments thick¬ 
ened ; color, black-brown ; on 7 and 8 is a white patch, saddle-shaped, reaching 
on dorsum to middle of 9, and descending the sides on 7 and 6 to base; at 
each end of a compressed chitinous cross-ridge on 2 is a large tubercle, rounded, 
