364 PTER0PH0RUS FUSOUS. 



T. Porritt, 2nd January, 1882; Entom., February, 

 1882, XV, 44.) 



Pterophorus lithodactylus. 

 Plate CLXIV, fig. 1. 



The larva from which I took down my notes was 

 received, amongst some of those of Ebulea crocealis y 

 feeding on Inula dysenterica, from Mr. W. H. Grigg, 

 of Bristol, on the 15th of June, 1875. 



It was full-grown, five-eighths of an inch in length, 

 and of average bulk in proportion. The head was 

 globular and polished, smaller than the second 

 segment, into which it can be partially withdrawn. 

 The body was of nearly uniform width throughout, 

 but tapering slightly towards the posterior extremity; 

 it was clothed rather thickly with short hairs. 



The ground colour was bright yellowish-green ; the 

 head was pale green, the mandibles were brown ; 

 throughout the entire length of the dorsal area was 

 a broad pink stripe, edged on each side with a nar- 

 rower purplish one, which was again edged with a fine 

 whitish line. The ventral surface was uniformly pale 

 green. The hairs on the dorsal area were dark brown, 

 those on the sides whitish. 



The pupa is so similar in appearance to the larva, 

 that it had actually been in that stage several days 

 before I found out the fact. I noticed, as I fancied, 

 the larva on the upper side of a leaf, motionless, I 

 supposed changing its skin, and I was not a little 

 surprised, on examining it closely, to discover that it 

 had become a pupa. 



The markings and almost the shape had assumed 

 the same character as the larva, but the broad purple 

 dorsal stripe was gone, and replaced by a series of 

 pale green lozenge-shaped marks, connected at the 

 abdominal divisions ; the subdorsal region was dull 

 purple ; the wing-cases were pale green, with several 



