204 
SPOLlA ZEYLANICA. 
Miocene times there has been no break in the deposition of 
material, the new beds quietly overlapping the older. In the 
absence of any signs of tectonic movements during the Tertiary 
period we are driven to the conclusion that the shallow platform 
in the north part of the Gulf of Mannar is due to the filling up of 
the sea by the debris derived from the land. Suess attributes the 
emergence of Adam’s Bridge and the “littoral concrete” to a 
negative eustatic movement of the sea level in post-Tertiary times. 
This may have been so recent that the great Hindu epic, the 
“ Ramayana,” which treats of the building of Adam’s Bridge, may 
be a poetical rendering of events witnessed by man. Although 
we have no certain evidence that the bridge was at any time 
continuous, we have historic data to prove that the Island of 
Rameswaram was once united with Tonitoray spit. 
If, as I suggest, the various links in the chain of islands 
represent emerged “ paars,” we have no reason to suppose, judging 
from the distribution of those now forming, that they were ever 
united. 
9. On the oviposition and early larva of Jamides bochns , 
Cram.—Peradeniya, January 6, 1905. I observed the small 
Lycsenid butterfly Jamides bochus , Cram., ovipositing upon the 
flower buds of a species of Vigna. The eggs are laid—two or three 
together—in the midst of a small mass of colourless frothy matter 
which appears to dry almost immediately after extrusion. The 
ova are not directly attached to the plant, but rest in the midst of 
this cellular mass of dried froth, from which they are difficult to 
extricate. The egg is of a honey-yellow colour, of the usual 
flattened spherical form, with a median depression on what is 
presumably the upper surface, though the eggs lie at various angles 
within the mass without regard to their form. The surface of the 
egg appears to be minutely pitted, but it is difficult to clear away 
the surrounding medium sufficiently for an accurate determina¬ 
tion of the character of the sculpturing. 
On hatching, the young caterpillar emerges outwards through 
the cellular mass and bores into an adjacent flower bud, after¬ 
wards closing the aperture with a delicate (? silken) membrane, 
and commences to feed on the anthers of the stamens. 
On its first appearance, the young larva somewhat resembles 
that of a Tortrix moth. It is cylindrical, pale greenish yellow, 
with a black head and dark brown notal plate on the second seg¬ 
ment. There is a double median longitudinal series of small 
black dots, from each of which springs a longish colourless bristle. 
The anal segment bears an oval brown plate. Other colourless 
