between leindopterous larvm and their sitrroundings. 329 



XIII. 



Bark covered with 



bluish-green lichen, probably 



Physcia pulvcrulenta. 



3 hctularia, about 12 

 mm. long, introduced. 

 12 hidentaia, about 6 

 mm. long, introduced, 

 mostly chaugiug skin. 



2 behclaria yellowisli- 

 i green, 1 brownish-green. 

 10 bldanUtta much 

 variegated. 



XIV. 



Bark covered with orange 



lichen, jirobably Physcia 



2xirictina, combined witli 



P. pulvcrulcdta. 



(June 25.) 4 bdularia, 

 about 7 mm. long, intro- 

 duced. 1 changing first 

 or second skin, others 

 rather larger. 8 hideiUata, 

 about 6 mm. long, in- 

 troduced. 



XV. 



Lichen-covered sticks 

 The lichen probably 

 Ramalina farinacea. 



4 bdularia and 10 

 bidcntata introduced. 

 Both similar to those in 

 XIII. 



Re-fed. 

 counted. 



3 and 10 



3 betularia 

 yellowish-green, 1 

 mottled with brown, ti 

 much smaller than others, 

 Bideutata rather pale, 

 yariegated. 



pale I 3 betularia yellowish- 

 grey ] green, 1 dark brownish- 

 green. B identata 

 mottled. 



Betularia, all mature. 

 9 bidentaia much 



variegated. 



2 yellowish - green i 4 and 10 counted, 

 betularia still feeding. Betularia as before. 



All betularia mature, i 3 betularia mature, 

 4 bidentata on bark, 3 , 1 escaped. 10 bidentata 

 on green. All brightly ^ dark, mottled ; some 

 variegated. I green on sides. 



8 on bark, 1 on green. ' 4 on bark, 3 on green. (July 24.) 8 on sticks, 

 2 seemed unhealthy. All j All brightly variegated | 1 on green, 1 on muslin, 

 much variegated with I with shades of brown, , Nearly all patched with 

 pale brown and green. ■ and patched with green, green. 

 Small white dashes on , ; 



sides. 



7 on bark, 1 on green. 



' Colours as before. Typical 

 larvffi painted, Aug. 1st 

 and 3rd, shown in Plate 



I XVI, figs. 6 and 7. 



8 on bark. 1 unhealthy. 

 6 brown, lighter than in 

 XII, brightly mottled 

 with paler brown and 

 green. 1 paler, less varie- 

 gated, with little green. 

 1 small and pale, without 

 green. White lateral 

 I das^hes only on form'er 6. 



6 on bark, 1 on green. 

 As before. 



10 on sticks. 6 darkish 

 brown mottled with green 

 and paler brown : white 

 dashes on sides. 3 

 similar but paler. 1 

 without green. 



7 on bark. All changed 

 skin. 1 blackish-brown, 

 4 darkish brown, 2 lighter 

 brown ; all variegated 

 with much green, and the 

 darker ones also with 

 paler brown. All with 

 lateral white dashes. 



7 brown, more or less 

 patched with green, some 

 very strongly. 1 grey 

 and brown strongly 

 patched with pale green. 

 2 pale brown with little 

 green. Most show white 

 lateral dashes. 



