Sept. 1897] Dyar : On the White Eucleid^. 125 



length after the fourth pair. Short haired above, fringed on the sides 

 with long, soft, vvhite 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 II, 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 setse 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 papilloe 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 formed 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 

 larvse, seem to be absent in this case. This is doubtless due to the 

 peculiar habitat of Calybia, for if the Tachinge 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- 

 stojna eupceyce 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 



