NEMATUS CONJUGATUS. 141 



in the other species of the group, and the wings are 

 not so clearly hyaline. 



The larva is shining clear green or yellowish-green, 

 with the first three and last two segments orange. 

 Head shining black, as are also the legs, except at the 

 joints. On the abdominal segments are, on each side, 

 black marks ; above these are two, and under these 

 three, while over each leg are two longer marks, the 

 upper being a little in front of the lower or larger. 

 On the first segment are two marks, on the second 

 six, besides a large one over the leg. On the third 

 are two pairs above, then two larger ones, one imme- 

 diately below the other. On the 4th body segment 

 are two pairs above, then three in a row, followed by 

 two longer marks. On the penultimate segment are 

 two rows of smaller black dots, going across the back, 

 and the last bears also some black marks. All the 

 orange-coloured segments bear a row higher up than 

 the topmost row on the green segments, which have in 

 all three rows. 



The eggs are laid in holes along the edge of the 

 leaves, especially on the teeth. The larvae feed grega- 

 riously on the edge, with their bodies stuck out. They 

 live on the larger leaved willows, on poplar and aspen, 

 and are double brooded. 



The species is rare in this country, so far as I know. 

 Near Glasgow. 



Parasites : Mesoleius compressus, B,tz. (grossularice) 

 probably only a variety of M. sylvestris, Gr. 



Continental distribution : Sweden, Germany, Hol- 

 land, France, Switzerland, Silesia, Hungary. 



