200 NEMATUS BELLUS. 



deep brown, palpi white. Legs greyish-white, with 

 brown claws ; clypeus lighter in tint. Body attenuate, 

 cylindrical, tapering towards the tail. The colour is 

 shining orange-slate, varying, however, in tint, being 

 sometimes lighter or darker. The segments are well 

 marked ; they project in ridges, each being divided 

 into three folds. 



The pupa is white with a tinge of green. Cocoon 

 light brownish, of the usual shape, and single. 



In the gall the larva rests with the body curved like 

 a J. It does not make a hole for the expulsion of the 

 frass (which is dry, fine, and coffee-brown in colour), 

 so the gall gets pretty well filled with it by the time 

 the larva has become full-fed. 



The imago appears in May ; the galls are found from 

 the end of May to the end of September. I have never 

 been able to decide if the species be double brooded or 

 not. Commonly distributed. 



Continental distribution: Sweden, Holland, Ger- 

 many, France, Italy. 



101. NEMATUS BELLUS. 

 Vol. I, PI. V, fig. 9, Gall. 



Nematus bellus, Zaddach, Schr. Ges. Konig., xxiv, 170, 155. 

 pedunculi, Cam., Fauna, 43. 



This form differs only from the preceding in being a little smaller in 

 size, in having the abdomen at the apex, and the sides and ventral sur- 

 face pallid yellow inclining to pallid fuscous ; the dorsal surface is also 

 of a brownish hue ; the clypeus is apparently more deeply incised, and 

 the coloration of the legs is more pallid, not being of such a bright 

 luteous tinge as in salicis-cinerea. 



The <$ possesses the same characters as the ? , differing from the $ 

 of salicis-cinerete precisely in the same respects as its ? differs from 

 the $ of that species. 



Like the last species it varies considerably, some 

 specimens having the abdomen for the greater part 

 black. The head may be entirely black, or the orbits 

 may be broadly bordered with brown. Generally only 

 the clypeus and labruin are pallid yellow, but I have 



