FEXrSA PUMELA. 293 



obscure yellowish-white, verging into testaceous ; tarsi slightly darker ; 

 spurs short. Abdomen short, apex truncated obliquely ; sheaths of 

 saw glabrous, a little projecting ; blotch broad. Wings blackish, with 

 deep black costa, stigma and nervures; costa dilated towards the 

 stigma ; first radial cellule much broader and longer than the second ; 

 first cubital longer than the second, which is twice wider at the apex than 

 at the base, and angled where it receives the second recurrent nervure. 

 Transverse radial nervure curved, received a good piece past the second 

 transverse cubital ; first recurrent received in the middle of the first 

 cubital cellule ; the second about a fourth of the length of the cellule 

 from the first transverse cubital nervure. 

 Length If line. 



The larva mines the leaves of the common alder. 

 The head is black, as are also the legs for the greater 

 part. Above, on the second segment, is a broad, 

 black plate, divided in the middle. Below, on the same 

 segment, is a large black plate, which is small and 

 truncated at the base, but spreads and curls out at 

 the apex, retreating again in the middle, the sides being 

 curved ; on the third and fourth segment is a small, 

 black, round dot. At the last moult the markings 

 are cast off. The larvae are found from July to Sep- 

 tember, or even October, there being apparently two 

 broods in the year. Common and generally dis- 

 tributed. 



Continental distribution : Sweden, Germany, France. 



Obs. Thomson adopts the name of Nigricans, Klug, for this species, 

 but the description of the latter is very ambiguous : " Brownish-Black ; 

 antennae as long as the abdomen; labrum and tips of mandibles 

 testaceous ; legs pale testaceous, with dusky trochanters ; wing scales 

 yellowish ; wings hyaline, with nervures and stigma brownish." Length 

 2 lines. Hab. Sweden (Hartig, Blattw., 259). Thomson himself thinks 

 that the nigricans, Klug, may have been a Blennocampa with only 

 three cubital cellules, but we have no evidence of this, so I believe it 

 best to re-name the present species. 



2. FENUSA PUMILA. 



Tenthredo pumila, Klug, Berl. Mag., viii, 120, 190; Htg., 



Blattw., 259, 3. 



pygmcea, Zett., I. L., 340, 11. 

 Fenusa pumila, Ste., 111., vii, 41 ; Thorns., Opus., 272, 2 ; Hym. 



Sc., i,186, 2; Cam., P. N. H. S. 



Glas., iii, 8, 2; Fauna, 22, 2 ; 



Andre, Species, i, 231, pi. xiv, fig. 



10; Cat., 118,* 9. 



