134 THE ENTOMOLOGIST. 



As the weather remained so cold and wet, and fearing the 

 other batches out-of-doors would not hatch, I moved another 

 lot indoors on August 20th. The following day they showed 

 signs of changing colour, and these also began hatching on the 

 night of the 23rd, and by the next evening all were hatched. 

 Another batch left on the tree out-of-doors changed colour on 

 the 24th, and hatched on the 26th. The two remaining batches 

 hatched during the first week in September. 



The egg measures tjV ^^- liig^> ^^^ -io i^^* across the middle, 

 its greatest diameter ; in shape it resembles a rather elongated 

 acorn ; the micropyle is fiat and smooth, there are usually 

 fifteen, but sometimes sixteen, longitudinal keels, seven running 

 from near the base to the summit, where each terminates in a 

 glassy globe enveloping an opaque white knob ; the remaining 

 keels are simple at the ends, disappearing into the surface by 

 the base of the globes ; the spaces between the keels are angular, 

 and very faintly ribbed transversely. The colour when first laid 

 is a bright, rich, primrose-yellow, and remains unchanged until 

 a day or two before hatching, as above described. They are 

 deposited in rows closely packed, and stand erect. 



I think in a state of nature they would usually be deposited 

 on the under surface of the leaves, otherwise heavy rains would 

 be likely to dislodge them, as I find they are easily removed with 

 a finely-pointed wet sable-hair brush. 



Directly after emerging from the egg the larvae measures -^q in. 

 long ; the body is cylindrical, of uniform thickness, and wrinkled 

 transversely ; on the upper half the segmental divisions are 

 clearly defined; there are three longitudinal rows of long fine white 

 hairs on each side above the spiracles, each having a large 

 bulbous base, and one immediately below the spiracle having a 

 flatter base ; the anterior dorsal ones on each segment curve 

 forwards ; the posterior one is shorter and straight, and the 

 subspiracular one curves downwards, all have slightly knobbed 

 and clefted tips. On the ventral surface, including the claspers 

 and legs, are simple white hairs ; the spiracles are brown and 

 shining. The entire surface is densely sprinkled with minute 

 dusky points, giving it a rough texture. The body (including 

 the claspers) is pale ochreous yellow, the legs dusky, and the 

 head shining black, with a granular surface, pale olive-brown 

 eye-spots, and beset with about twenty fine whitish hairs, and a 

 pair of very small black bristles in the centre. 



After leaving the egg-shells, which are considerably eaten, 

 they spin a web over the surface of the leaf, living gregariously, 

 all feeding upon the same part of the leaf. For the first twelve 

 days they live exposed upon and under a slight covering of web, 

 they then spin a denser web, and all retire within it. The first 

 moult occurred on or about August23rd. 



On August 24th a few emerged from the web, and feed on the 



