species of Nematm from Britain. 537 



This is the form 'mentioned (E. M. M. xii., 128) as 

 feeding on willow, and which I then referred to N. cad- 

 derensis, Cam. The description of the larva given [l. c.) 

 refers to glottianus ; that of cadderensis will be described 

 in vol. ii. of Phyto.-Hym., and is figured in vol. i., pi. iv., 

 fig. 10. 



Nematus v-flaviini, n. s. 



Black, shining ; labrum white ; pronotum, tegulae, the 

 greater part of mesoplem*a in front, metapleura in part, 

 the edges of the middle lobe of mesonotum (forming 

 a V-shaped mark), abdomen and legs, orange-yellow; 

 the base of abdomen with two small transverse black 

 marks. Antennae not much longer than metathorax and 

 abdomen ; the 3rd joint the length of 4th ; black, dull 

 brown beneath. Clypeus truncated at apex. Spurs 

 scarcely reaching to middle of metatarsus ; claws almost 

 bifid. Wings hyaline ; costa and stigma testaceous ; 

 3rd cubital cellule nearly one-fourth longer than broad. 

 The anal segment is large and considerably' developed 

 above, where it ends in a slope, as in the luteus group ; 

 the'cerciarenearly as long as the spurs. Female. Length, 

 2f lines. 



Allied to conjngatus, but is of a longer and broader 

 body form. The stigma is more uniformly coloured, the 

 3rd cubital cellule longer and nearly as broad at the base 

 as at the apex, the spurs are shorter, metatarsus longer, 

 and the apex of the tibiae and tarsi are not black, nor 

 are the tibiae whitish ; the cerci are longer, and the 

 sheath of saw is not so black, nor so hairy ; the labrum 

 is longer, and the clypeus entirely black. From N. suh- 

 hifid'us, Thoms., it is readily known by its black clj^peus, 

 shorter antennae, testaceous stigma, longer 3rd cubital 

 cellule, testaceous tarsi, and longer spurs. The colour, 

 too, is paler, not being so orange. 



In Shuckard's collection. 



Nematus lyulchellas, n. s. 



Black, shining, smooth, covered with a close white 

 pubescence ; labrum, clypeus, . pronotum broadly, the 

 metapleura, the sides, apex and lower side of abdomen 

 with the legs, pale yellowish -white ; a small fuscous spot 

 on the base of coxae behind. Antennae nearly as long as 

 the body, filiform, covered with a microscopic pubescence; 



