T. BAINBRIGGE FLETCHER 107 
Common at Pusa and Chapra in Bihar. I have also seen a specimen from 
Nagpur, and we have it from Tocklai (Assam). 
The eggs are laid singly and in confinement they were laid on the bottom 
of the cage and not on the plant supplied. One female laid 57 eggs in con- 
finement. The egg is about: 0°75 mm. long and about 0°35 mm. broad, cylin- 
drical, irregularly’ oval, one end rounded and the other end flattened, the 
latter with small papille all around its rim; the egg-shell has prominent 
longitudinal ridges, which are toothed transversely throughout their length. 
(Plate XXIV, fig. 2.) 
The complete life-cycle does not appear to have been worked out. Young 
larve, about 6 mm. long, were collected at Pusa on 2nd July 1914, bormg 
into stems of Bombax malabaricum. At this stage the colour is uniform 
brownish-yellow, without any of the markings developed later on in the adult 
larva; head and large prothoracic shield shining dark brown or black, anal 
shield dark brown; primary tubercles showing as dull dark brown rounded 
spots ; five pairs of equally-developed prolegs. 
The larva bores into the-axil of a leaf-sheath. It wanders about a little 
and selects a place where it means to bore in; then it quickly applies some 
white silk over this place so as to make a net-like covering under the shelter 
of which it bores into the plant, and the pellets of frass are attached to this 
net-work. As they become larger they bore into the stems, eating out the 
pith and reducing the twigs and branches to hollow tubes which are filled 
with the blaek larval extrement. 
The full-grown larva is about 25 mm. long and 3°5 mm. broad, cylindrical 
or slightly sub-cylindrical, the segments clearly defined ; head black, shiny, 
smaller than prothorax which is itself smaller than mesothorax ; a broad white 
band between head and prothorax ; prothoracic shield black, shiny, posteriorly 
yellow; anal segment with its prolegs black, shiny ; other segments orange- 
yellow, dark-grey or black along lower portions of sides and ventral area ; 
primary tubercles showing as circular black spots, from which arise short 
hairs, the dorsal tubercles connected transversely by dark grey markings ; 
spiracles oval with black shiny rims; five pairs of fully-developed prolegs 
with crochets arranged in a circle. (Plate XXIV, figs. 3, 4.) 
When full-fed the larva emerges from the stem and pupates openly on a 
leaf, the anal extremity of the pupa being broadly attached by the numerous 
small curved-tipped cremastral hooks to a net-work of silk applied to the 
surface of the leaf. The pupa is about 12 mm. long and 6 mm. broad across 
the thoracic region, roughly tuberculated, brownish-grey. (Plate XXIV, fig. 5.) 
The pupal period in July is about six or seven days. 
