Sept. 1897] 
Dyar: On the White Eucleidte. 
125 
length after the fourth pair. Short haired above, fringed on the'sides 
with long, soft, white hairs (Plate V, Fig. 20), which form a continu¬ 
ous, thought not very conspicuous fringe. At the base of the appen¬ 
dages, the fleshy, heart-shaped pieces rise above the dorsum and also 
above the base of the appendage, converting the dorsal area into a 
channel. They have short, rudimentary white hairs (Plate V, Fig. 
21), besides seta i. Color light yellowish green, all the horns tipped 
with orange red, most so anteriorly. A blood red, diamond-shaped 
patch with whitish centre in the depressed dorsum on joints 4-5, 7, 9 
and 11, four patches, the anterior one slightly elongate. Horns on 
joints 3 and 4 very faintly orange shaded. Sides hid by the horns, 
smooth, green. The traces of the lateral horns are seen with difficulty 
on removing the horns, as small whitish papillae. Subventral setae be¬ 
low the spiracles rather distinct. The horns arise about the centre of 
the segments from small depressions, and there is a smooth bulge of the 
skin below. The spiracle on joint 5 is in line with the others, but ap¬ 
pears slightly unsymmetrical, rather higher on the fold in proportion. 
In the beginning of the stage the larva is all green, the dorsal marks 
appearing gradually. They vary somewhat in different examples. In 
another example the horns on joints 7, 9 and 11 were without the red 
tips. Lateral papillae on joints 3, 4, 6 to 12. 
Cocoon. Rounded, elliptical, white, with streaks of brown without, 
brown within; the usual circular lid (Plate V, Fig. 24). In spin¬ 
ning, the larva elevates the horns and begins to spin silk around the 
base of its body. The cocoon is thus gradually built up, supported 
against the larva itself until finally the horns are enclosed. They do 
not become detached. The silk first forme^l dries white, making the 
white color of the cocoon, through which the brown appears in spots. 
Food-plant. —Mangrove (Rhizophora mangle). 
Parasites. 
Tachinid flies, which are usually such frequent parasites of Eucleid 
larvae, seem to be absent in this case. This is doubtless due to the 
peculiar habitat of Calybia, for if the Tachinae should infest these 
larvae, the maggots would all perish at the time of pupation by falling 
in the water. 
Two hymenopterous parasites infest the larvae freely. One ( Pelecy - 
stoma eupoeycB Ashm.) destroys the life of the larva while it is in the 
last stage. The host retains a life-like shape, but becomes bright red 
(Plate V, Fig. 23) and hardens. The parasite issues from a hole in 
