286 HYMENOPTERA ACULEATA. 



clothed witli sliort pale hairs in the $, nearly glabrous in 

 the ? , $ with the mandibles, labrum, clypeus and face at 

 the sides of the clypeus flavous, in the ? the base of the 

 mandibles and sides of the face are flavous, the rest of 

 the mandibles, labrum and apex of the clypeus ferrugi- 

 nous, its base black, antennte piceous, paler beneath, scape 

 of the $ flavous in front, of the 2 ferruginous, third joint 

 as long as, or longer than the fourth in both sexes ; thorax 

 with two spots on the collar, the tubercles, tegulte, an oval 

 spot on the mesopleur^, and the scutellum flavous, wings 

 dusky, propodeura closely punctured except on the basal 

 area; abdomen black, rarely brown in the $ ^ often so in the 

 $ , closely and finely punctured, a lateral spot on the second 

 and third segments, and a more or less entire, wide band 

 on each of the others flavous, seventh in the cJ, black, 

 rounded at the apex ; segments beneath black or 

 brown, punctured at the base and more or less banded 

 with yellow, eighth segment and genital armature much 

 resembling that of Roherjeotiana, fifth segment in the ? , 

 fringed at the apex laterally with strong, black, curved 

 hairs, sixth flat and impressed in the centre, truncate at the 

 apex with three or four curved spines at each side ; legs 

 testaceous red, flavous at the knees ; posterior coxae spotted 

 with yellow, posterior femora entirely black at the base iu 

 the $ , black only on the inner side in the ? . 



L. 8-9 mm. 



Common on Senecio, &c., occurs in July and August, and 

 is generally distributed. F. Smith says it is parasitic on 

 Ilalictus leucozoiiiiis, but for the reasons given under the 

 head of the genus, I think this may be doubtful. 



N. fucata, Pam. {varia Panz., Smith). — Black, head and 

 thorax, dull, clothed with pale hairs, especially in the J', largely 

 and rugosely punctured, mandibles, labrum, clypeus, and 

 the sides of the face along the margins of the eyes flavous 

 in the ^, pale testaceous in the ? , apices of the mandibles 

 piceous, antennas clear rufotestaceous, scape in the S yellow 



