532 Mr. P. Cameron's descriptions of ten new 



are of moderate size. Abdomen longer than head and 

 thorax ; anal segment testaceous. Antennae as long as 

 the body, stout, black, the 3rd and 4th jomts about equal, 

 the 3rd slightly curved, longer than the longitudinal 

 diameter of the eye. Wings hyaline ; nervures testaceous 

 at base, black at apex of wing ; costa and stigma tes- 

 taceous-white. Calcaria one-third of the length of the 

 metatarsus ; 2nd tarsal joint longer than 5th. 



The female has the antennae as long as the thorax and 

 abdomen, and they are more slender than in the male ; 

 the black on the apex of posterior tibiae is less (in male 

 it sometimes extends to the base of the tibiae, while, it 

 may be added, in other specimens it scarcely exists at 

 all) ; the anal segment is dirty white above. The size of 

 the 3rd cubital cellule varies, it being sometimes as long 

 as broad, while it may be much longer than broad. The 

 2nd recurrent nervure is in most of the females I have 

 seen joined to the 3rd transverse cubital nervure, or 

 nearly so ; but in one or two specimens it is at some dis- 

 tance from it, which is its normal position with most 

 males. The testaceous colour on the pronotum varies in 

 extent, and may be entirely absent. 



This species comes near to N. ixdUpes, Fall., and at 

 first sight, when I had only males, I considered it 

 identical with that species. It would seem to differ, 

 pallipes being a broader and stouter insect, the posterior 

 tarsi are blacker, the band on the pronotum broader, the 

 apical abdominal segments are dirty testaceous, the 

 coxae are testaceous, the femora have only a thin black 

 line, and the spurs reach to the middle of the meta- 

 tarsus. 



Not uncommon on the Scotch mountains at an eleva- 

 tion of 3000 feet and upwards. N. pallipes, according to 

 Thomson, is found " in forest tracts." I have a German 

 specimen of it. 



The two other British species of the group are N. 

 Whitei, Cam. (which, by the way, has nothing to do with 

 N. lativentris, Thoms., as stated by Andre, Species des 

 Hymen, 'i., Cat., p. 15) ; and A', brevicornis, Thorns., 

 Opus. 622, 18 ; Hymen. Scand. i., 100, 25. The latter 

 species I bred from a green larva marked with orange 

 and black spots, which fed on birch, but unfortunately it 

 spun up before a description of it could be taken. 



