94 NEMATUS LONUISEBKA. 



division being bent in the middle, while with histrio it is 

 straight. 



I bred it from larvae which I found feeding on Salix 

 aurita at Grlenelg, Inverness-shire. These larvse 

 would appear to agree perfectly with the figures and 

 descriptions given by Brischke and Zaddach of those 

 of histrio. The head was light green, mottled on the 

 top with a darker green; mouth dark brown. Legs 

 light green with brown claws. Body dark green, the 

 segmental divisions are marked with white lines. 

 Down the back runs a dark green line, bordered on 

 either side by a white, narrower one. On the side 

 runs another white line. All the lines end on the 

 second last segment which, with the last, is of a lighter 

 green colour and bears a broad white mark on the top. 

 The skin is beset with numerous little black points. 



Among this batch of larvae were one or two which 

 had the body of a darker green, and the segmental divi- 

 sions were not marked by white lines. On the back were 

 two black lines formed of small, distinct, but closely 

 continuous black dots. There was also an irregular 

 waved line of dots over the forelegs. The only speci- 

 mens of the Iarva3 of histrio I have met were found in 

 their cocoons under the bark of Salix alba, and I have 

 no description of the feeding larvaB, so that I am not 

 in a position to say if these differed much from 

 those I have described, but I think it will be found 

 that the true histrio is attached to 8. alba. 



A specimen of glenelgensis sent to the late Prof. Zad- 

 dach was returned as a variety of histrio. 



33. NEMATUS LONGISERRA. 

 PL XIX, fig. 1, Saw. 



Nematus longiserra, Thorns., Opus., 632, 39 ; Hym. Scand., i, 



128, 55 ; Br. and Zad., Schr. 

 Ges. Konig., xvi, 68;? Cam., 

 E. M. M., xiii, 177; Fauna, 

 30, 5 ; Andre, Species, i, 186 ; 

 Cat., 13,* 12. 



