LITHOSTA STRAMINEOLA. 19 



the rest of the skin, and shining semi-transparent ; the 

 anterior legs similar in colour and texture. The colour 

 of the hairs of a whity-brown, mixed with black. 



On the 4th of May the moult of this larva was com- 

 plete, and on the 5th it had eaten up the cast skin 

 entirely, hairs and all ; the following day it was feeding 

 freely on Lichen caninus. The imago appeared June 

 21st, 1873. (W. B., Note Book II, 7.) 



LlTHOSIA COMPLANA. 



Plate XLI, fig. 2. 



I have also been indebted to Mr. Doubleday for a 

 specimen of this larva, which throve well on lichens 

 off fir-trees, and was nearly full-fed June 9th, 1862 ; 

 the perfect insect appeared at the end of July. The 

 colour of this larva was brown, with a very dark brown 

 head and dorsal line. The subdorsal markings consisted 

 of oblong, somewhat reniform, dull orange-red marks, 

 one on the anterior half of each segment, followed by 

 an interval of the ground colour, and succeeded by a 

 whitish spot; the usual tubercles and hairs dark 

 brown. (W. B. ; E.M.M. I, 49.) 



The larva of this species has long been known, 

 and descriptions of it have been published by many 

 entomologists ; our object, therefore, in introducing 

 any remarks upon it in this paper, is not so much to 

 describe it over again, as to say something about it 

 with reference to the larva of L. molybdeola. 



Under the latter species will be found an account of 

 two larvse reared from the egg in 1867-68, of which 

 very careful figures were also taken, with the view of 

 using them for comparison when the larva of complana 

 could be procured. And in this way they have been 

 used both this last summer and the summer before, 

 and the following particulars have been noted. 



In several points there exists between the larvae of 



