10 PROCEEDINGS OF THE 



captured the flies in August, so it is possible that there may be 

 sometimes two broods. 



Brischke (Sch. Phys. oko Ges. zu Konig, xi., p. 71), records 

 having hred Perilissus j^ict His, Holmgr.,from larvae of Fhaenusa, on 

 elm leaves. 



B. Frontal sutures invisible ; marginal uervure received not far from 

 the middle of the second sub-marginal cellule. Antennae longish. 

 Tegulae white ; tibiae and tarsi -white— jjyf/maea. 

 Tegulae black ; feet entirely white— alhipes. 

 Feet testaceous ; wings hyaline at the apex — pumilio. 



4. Phaenusa pygmaea. 



Tenthredo ptjgmaea, Klug, I.e., 121; Zetterstedt, /.c.,340, 11 (male). 

 Fenusa 'pygmaea, Stephens, I.e., 41, 3; Hartig, I.e., 259, 4; Thomson, 

 Opus. Ent., 272, 3 ; Hymen. Scand., i., 186, 4. 



Black. Antennae nearly as long as the abdomen ; the two first 

 joints large, the third scarcely double the length of the fourth, 

 the remainder gradually, but slightly, decreasing in length ; 

 covered with a stiff" microscopic down. Head very smooth, 

 shining ; face covered with a sparse scattered pubescence, frontal 

 sutures invisible ; eyes greenish. Thorax smooth, shining, with 

 a faint scattered down ; tegulae white. Abdomen a little longer 

 than the head and thorax, apex rounded, saw considerably 

 exserted. Feet : coxae, trochanters and the greater part of the 

 femora black; knees, tibiae and tarsi, clear white. Wings half 

 smoky, clearer at the apex ; first marginal cellule a little shorter 

 than second ; first sub marginal shorter than second ; second 

 double the width at the apex that it is at the base ; angled 

 where the recurrent nervure is received. Marginal nervure 

 received about a fourth of the length of the second cellule in 

 front of the second sub-marginal nervure. Length 1^ lines. 



The male is unknown to me. 



Pygmaea closely resembles albijjes, but is distinguished from it 

 by the black femora, white tegulae, shorter antennae, and longer 

 2d sub-marginal cellule. 



Apparently not common. " Forest Hill " (Stephens); Darenth 

 (Rev. T. A. Marshall) ; London District (Healy) ; Dairy (Dr 

 Sharp). 



Larva white. Head liglit brown, darker at the sides, eyespots 

 black, moutli reddish brown. On the ventral side there is on 



