298 HYMENOPTERA ACULEATA. 



like them but very small, sometimes absent, those of the 

 fourth transverse and discal, the fifth with a central square 

 spot, the segment margined with black as in the $ , seg- 

 ments beneath margined with black, and sometimes more 

 or less spotted with yellow, eighth segment in the $ with 

 the apical process short, curved, and dilated at the apex, 

 sides spinose near the apex, fringed with hairs towards the 

 base, armature very like that of the allied species, legs 

 ferruginous, femora black at the base beneath, and there is 

 often a spot on the tibias inwardly, apex of the posterior 

 tibite armed with irregular spines in the $ , with five pale 

 spines of nearly equal length in the ? . 



L. 8-9 mm. 



Not rare ; appears in June. F. Smith says it is parasitic 

 on Andreiia lahialis ; Mr. R. C. L. Perkins and I have 

 taken it with A. Wilhella. Chobham ; Woking ; Bromle3'' ; 

 Ilfracombe ; Isle of Wight ; Worthing. London District ; 

 Yorkshire; (Smith). Hastings; {Bennett). Oxford; Chip- 

 penham; [R. G. L. Perlcins). Glanvilles Wootton; Wey- 

 mouth ; (Dale). Bickleigh ; (Blgnell). Land's End ; 

 (Marqnand). Norwich; (Bridgmmi). Gloucestershire; 

 {V. B. Perkins). Colchester; [Harwood). 



N. armata, H.-Schff'. — The largest British species of 

 the genus. Head and thorax black, densely and rugosely 

 punctured, clothed with grey hairs in the cj, with short 

 brown hairs in the ? , the hairs on the face below the 

 antennte silvery in both sexes, labrum black, with a well- 

 developed apical tooth, mandibles ferruginous, yellow at the 

 base iu the cJ, anterior margin of the clyiDeus and the mar- 

 gins of the eyes narrowly ferruginous in the ? ; antennas 

 ferruginous, scape in the (J black, pale at its sides in the 

 ? , which also has the eighth to the eleventh joints dark ; 

 collar of pronotum, scutellum, and postscutellum in the ?, 

 and tegula3 and tubercles of both sexes ferruginous, wings 

 clouded, with a distinct apical band, mesopleuras with a 

 transverse patch of silvery hairs in the ?, and propodeum 



