560 Mr. C. L. Withycombe's Notes on 



have a habit of resting with the abdomen raised. In the 

 second instar the head markings are fairly typical, the 

 warts not quite as elongate as in the full-grown larva. The 

 colour of the body is wholly white. 



Description of Third-instar Larva. (Plate XLI, fig. 4.) 



Length of fuU-grov.n larva 6-7 mm. Body wliit-c, almost devoid 

 of markings, with veiy long thoracic warts. 



Head greyish-white, markings blackish, consisting of two lines, 

 broad posteriorly, narrowing and diverging as they run forwards 

 in the direction of the antennae, at the bases of which they generally 

 terminate. Between these, two parallel lines start close together just 

 in front of the middle and rim to the anterior margin of the head, 

 where they expand laterally. Such markings are always present. 

 The following are often found, but sometimes indistinct or diffuse : 

 outside the two first -mentioned diverging lines, running from the 

 base of the head to the eyes on each side, is a diffuse line, and the 

 sides of the head are greyish as far forward as the eyes. In some cases 

 these two last markings run into one another. Eyes black ; antennae 

 smoky-white; jaws castaneous, especially at the tips; pali)i pale 

 castaneous. 



Thorax white, with very long warts. These warts are white and 

 opaque, as the rest of the body, except for one-third of theii- length 

 from the apex, which is transparent. At the apex of each wart is a 

 tuft of bristles. Usually on the prothorax three of these bristles are 

 black, the rest colourless ; on the meso- and metathorax apparently 

 only one bristle in each tuft is black. The two prothoracic sclerites 

 are somewhat triangular, shining blackish. Meso- and meta- 

 thoracic sclerites smaller and blackish. Betv/een each pair is a 

 sunken line. On the mesothorax, anterior to the afore-mentioned 

 sclerites are two more pairs of small black sclerites. 



Abdomen white, with segmental prominences less distinct and 

 warts not elongated. A median dorsal blackish line runs the greater 

 part of the length of the abdomen, but is less distinct in the thorax. 

 Underside wholly white. Legs translucent and colourless, except 

 the tarsi, which are darkened. 



A very compact coat of skins and other debris is carried 

 on the back, with the hooked body setae firmly holding it 

 in position. The larva uses the coat as a shield, and can 

 move it forward or from side to side when attacked. Often 

 webs are found interwoven with the skins, but I do not think 



