the Life History of Triclwptilus paludiini. 143 



very colourless or rather transparent, the dark intestinal 

 contents being conspicuous, and the only coloration being 

 a denser white round the bases of the dorsal tubercles. 



July 3rd. Two larvae (of the eight that hatched from 

 Mr. South's eggs) that had gone a-missing are now seen to 

 have hidden themselves, and still are, in unopened leaves, 

 amongst the undeveloped glandular hairs, with which their 

 interiors are full. The leaves are now slightly opened and 

 frass is very evident. Tliese larva?, therefore, went into 

 incompletely expanded leaves in order to cat the glands ; 

 these were not, however, probably functionally active at 

 this stage. The smallest larva found was just about to 

 moult for the last time but one ; its general aspect was 

 precisely that of the larger larvae and the disposition of the 

 primary hairs is identical though they are not so long; 

 there are no secondary hairs, however, to be discovered. 

 The length is 4"5 mm., the longest hairs are about 0"5 mm. 



The next smallest larva was about to moult for the last 

 time, its length was about G"0 mm. The longest hairs 

 about 0'8 mm., and there are a good many secondary hairs, 

 two or three round I and II, one behind III and one above 

 and behind IV and V. These are secondary tubercular 

 hairs not skin hairs, as are also those of the larva in its 

 last skin. 



The full-grown larva is 7 to 8 mm. long, of a form much 

 like rliododactyl'us or zophodadylus, thickest about third 

 or fourth abdominal segment, and tapering to either end, 

 but when at rest or feeding has the forward segments 

 rather contracted, so tliat it looks thickest about the 

 metathorax, and the mesothorax seems nearly as large ; 

 in colour the dorsum is red or reddish-brown or pink, with 

 an underlying green tone, the difference of tint being due 

 rather to the attitude of the larva, and the degree to which 

 it is fed up, rather than to individual variation. The hairs 

 are very long and many of them are clubbed, being 

 somewhat flattened at the tips especially; some are dark 

 with white tips which look club-like. Tiie hairs transmit 

 and reflect the red of the larva and of the hair-glands of 

 the plant, so that the resemblance of the larva, in some 

 aspects, to a leaf is very close ; in others a leaf seen edge- 

 wise may be easily mistaken for the larva one is in search 

 of. This is assisted by the lower surface of the larva being 

 green, separated from the upper red surface by a yellow 

 line, sometimes not very conspicuous in tint, but in some 



