202 PYRAUSTA MACHGRALIS. 

each side, below the yellow dorsal lines, are a series of light 
coloured lateral marks tipped with purple, these being more 
or less indistinct, except on the 3rd and 4th segments 
where they are conspicuous. Head yellow. A few erect hairs 
on each segment. 
The larva on emerging from the egg is about jth inch in 
length and is active from the first. The colour is then a dirty 
white which gradually changes to pale green. The purple 
spots are usually not distinct until after the first change of 
skin, which takes place when the larva is 5-6 days old, Before 
the moult the marks appear as pale spots with dark specks. 
After the moult the larva appears with its normal markings. 
In three or four days a second moult takes place. Three or 
four days after this second mouit the larva stops feeding and 
becomes torpid, preparatory to constructing its cocoon. The 
construction of the cocoon usually occupies one day, and 
pupation takes place inside the cocoon two days after the larva 
has stopped feeding. (During the winter hibernation the larva 
remains in the cocoon 22 weeks, after which pupation takes 
place as usual). Just before each change of skin the larva 
becomes torpid and contracts in size, the colour fading to pale 
yellow, in which the purple markings are very distinct (see 
Rien lLX em). 
Pupa.—The larva changes into the pupal state within a 
loose silken cocoon. Pupa is slender. Colour yellowish-brown, 
dark on back, pale to white in front, with a few scattered 
bristles. On the top of the head, between the eyes, are two 
small dark bristles. At the point of tail there isa minute 
hook, with two outwardly-pointed branches. Length 0'52 to 0°43 
inch and the mid diameter 0°09 to 0°13 inch. 
Moth.4—Bright yellow; palpi white below; frons white at 
sides. Fore wing with fulvous-yellow subcostal fascia; an 
antemedial line oblique from costa to vein', where it is dentate 
inwards; a speck in cell and discocellular lunule; a postmedial 
crenulate line highly excurved between veins 6 and 2, along 
1 Description from Hampson Faun. Br. Ind. Moths, p 433. 

