124 NEMATUS SYLVESTRTS. 



darker, and the abdomen has every segment marked 

 with black. 



The larva feeds on the Sallow. The body is dark 

 green, head green with a yellowish tinge, and spotted 

 with brown dots on the centre ; a broad stripe on side of 

 face. There is a brown mark over the eyes, and down 

 the back is a reddish, pink, or purplish stripe. It is of 

 similar habits to the other species with solitary larvae. 



Seemingly rare. Clydesdale. London district. 



Continental distribution : Sweden, Germany, Hol- 

 land. 



53 NEMATUS SYLVESTEIS. 

 PL XXI, fig. 7. 



Nematus sylvestris, Cam., E. M. M., xx, 266 (1884). 



Green ; the vertex between the ocelli, a line in centre of middle lobe 

 of mesonotum at the base touching the pronotuin, a longer line on 

 inner side reaching from near the pronotum to the scutellum, a small 

 round mark on either side of these at apex, a longer mark outside of 

 scutellum, a curved line in front of each of the cenchri, and two or 

 three narrow transverse marks at base of abdomen, black. Antennae 

 as long as the body, a thin black line on upper side; third joint 

 shorter than fourth, longer than the long diameter of the eye. Wings 

 clear hyaline. Apices of tarsal joints fuscous. Cerci short, thick. 



The $ has the antenna as long as the body, densely covered with 

 close pile, the third joint a little curved, blackish above, testaceous 

 beneath. Vertex broadly black, behind black, except at edges. Body 

 greenish-testaceous beneath, meso- and metanotum and abdomen 

 above, except at extreme apex and at the sides of the apical segments, 

 black ; apical segment of abdomen transverse at apex above, rounded 

 beneath, with the edges incised. There is a short blunt keel above, 

 which does not reach to the apex, and with a depression on either side 

 of it. Stigma griseous- testaceous. The sides of scutellum are obscure 

 testaceous. 



Length 2f lines. 



This species is exceedingly like N. miliaris, and I 

 am not sure if the ? can be distinguished from the 

 $ of that species ; the $ , however, may be known 

 from miliaris <$ by the keel on the last abdominal 

 segment being much shorter, not being much longer 

 than broad, and not reaching to the apex ; in miliaris, 

 on the other hand, it projects beyond the apex which 



