EUURA ANGUSTA. 213 



the pith for a little distance, but others drop to the 

 ground. In my breeding cases they preferred pupating 

 in corks rather than in the twigs. 



The larva is greenish-yellow, the head darker, espe- 

 cially on the top, mandibles brownish. At the last 

 moult it became slate coloured, as in the other 

 species. 



It is certainly destructive to Salix caprea. On one 

 large bush I found nearly every bud occupied by a 

 larva, and these certainly would produce no leaves 

 next year. I have often seen branches destroyed by 

 them. 



The Ab. a, c and d were all bred together, and I am 

 satisfied that they belong to the same species. Ab. b 

 was not reared, but, apart from the white tegulaB, I 

 am not able to find any other points of difference, and 

 in one bred c? the tegulge were greyish. 



Common in Clydesdale. The imago in May, the 

 larvae principally in August, September, and October. 



4. EUURA ANGUSTA. 



Nematus angustus, Htg., Blattw., 2221 ; Thorns., Hym. Sc., i, 



167, 102. 



saliceti, var. c, Thorns , Opus., 639. 



Cryptocampus angustns, Yoll., Tijd. Ent., xiv, pi. xii ; Andre, 

 Species, i, 86 ; Cam., Fauna, 45, 3 ; Kalt., 

 Pfl., 582 ; "Br. and Zad., Beob. ii. Blattw. 

 (2), 13, 13. 

 ater, Br. and Zad., 1. c., 4, 1. ? 



Black ; antennae, tegulae, cerci and mandibles light brownish ; knees, 

 tibiae and tarsi, pallid testaceous ; the apex of coxae, trochanters, base, 

 and apex of femora, and more or less of apex of abdomen, brownish or 

 piceous. Clypeus sharply incised in the middle. Antennae shorter 

 than the abdomen. Wings hyaline, stigma fuscous, white at the 

 base. 



Length 2J 3 lines. 



A specimen not distinguishable otherwise from the 

 form described above, has the tegulaB black, which 

 seems to be the only differences between the C. ater and 



