124 
Journal New York Entomological Society. [Voi. v 
of the horns it would be lower, except that this character may not be 
primary. The hairs are also less specialized. 
The allies of our Calybia are in the West Indies and on the South 
American coast, as seen by the species reviewed above. C. slossonice 
is the Floridian representative of C. pygmcea Grote from Cuba, differ¬ 
ing from it in the smaller size of the mark at the anal angle. My male 
specimens all possess a small but evident yellowish mark in this loca¬ 
tion. In the females it is absent. 
During the winter season the cocoons of C. slossonicz may be found 
more or less commonly on the leaves or bark of the mangrove trees 
throughout southern Florida. The chalky white cocoons are very con¬ 
spicuous on the green leaves, but on the whitish bark hard to detect. 
The white color of the moth seems to have the same protective value. 
It is remarkable why so many of the cocoons are spun upon the leaves, 
as if the instinct to seek the place for which the cocoon is adapted were 
lapsing. As the larvae live on a plant which is always situated in water, 
they never leave it, even to spin. The moths emerge in about seven 
weeks, but scattering. The eggs are laid almost at once. They hatch 
in 15 days. The larvae are solitary, resting on the under sides of the 
leaves; when young they eat little spots and channels through the 
lower epidermis, but at maturity the whole leaf is eaten as usual. 
Detailed Description of Certain Stages. 
Egg. —Elliptical, flat, somewhat irregular in size and shape, but 
never circular; translucent, pale yellow both on glass and leaves; 1.6 
X1.9, 1.4X1.2, etc. Laid singly. Reticulations rather prominent, quad¬ 
rangular, irregular, distinct. The form of the developing embryo may 
be rather plainly seen (Plate V, Figs. 1 to 14). 
Stage I .—Head retracted, joint 2 mostly exposed. Dorsum flat, the 
sides nearly perpendicular, rounded. A subdorsal row of spines, the 
basal portion enlarged next the body, tapering, ribbed; distal part 
stiff, dark. Arrangement as in Phobetron except for the absence of the 
lower spine on joint 4. Lateral spines reduced almost to obliteration 
(Plate V, Fig. 15). Segments 7, 9 and 11 weak, as shown by the 
horns leaning out. Pale yellowish, an irregular, geminate, brown dorsal 
line and a broader dark subdorsal shade below the subdorsal horns. 
Bases of the tubercles white. Length .75 mm. 
Last Stage. —Elliptical, rather thick centrally, but pressed down at 
each end, fringed by the conical fleshy appendages (Plate V, Fig. 
22). Anterior pair short, curved, the rest straight, of about equal 
