327 



femora of the first (and sometimes also of the second and third) 

 pairs. 



The palpi are rather long, and similar, in general colouring, 

 to the legs ; the cubital and radial joints are about equal in 

 length ; the latter is rather less strong than tho former, and 

 has a short, obtusely pointed, bifid apophysis at tho oxtromity of 

 the outer side. The digital joint is large, of a short, broad-oval 

 form, pointed at the ond ; the palpal organs are not very com- 

 plex, nor furnished with any very remarkable procosses. 



The abdomen is truncated and indented beforo, broader 

 behind, but pointed at the spinners ; it is of a greenish-yollow 

 grey colour, variously mixed with brown and black. Some 

 transverse, black, angular bars are sometimes visiblo on the 

 hinder part, with one or two short, oblique, black markings on 

 the sides of that part. 



Examples of the above typo aro found, not uncommonly, on 

 Scotch fir trees, near Bloxworth, whoro they assimilato very 

 exactly to the greenish-grey lichens growing upon them; but 

 upon apple trees, in tho Boctory orchard, those typical examples 

 are replaced by the very distinct and remarkable varioty, 

 Philod/romusjejimus, Panz., (pi. v., fig. 2), in which tho cophalo- 

 thorax and abdomen are of a clear, groyish-white, the former 

 having an irregular, jet black patch on each side of the ocular 

 area, and a more or less large one, of the same colour, on each 

 side of the thorax. The abdomen has albo a few patchos of the 

 same colour on the upper part and sides. Tho legs and palpi 

 are pale, cream-grey, marked and annulated with black. This 

 variety also corresponds most exactly with tho lichens on tho 

 apple treos, which are of quite a different character from those 

 of tho Scotch fir. As yet, I have not found tho two varieties 

 above doscribed, in the same situation, each appearing to belong 

 exclusively to tho troos which foster the lichens similar to it. 



It is adult in May and June ; the females do not differ from 

 tho males excepting in size, and in having shorter legs. I have 

 received examples of tho varioty Phitodromus jejunm from Mr. 

 C, W. Dale, by whom they were found (also on applo treos) at 



