British Hymenoptera. 285 



black band across the centre. Abdomen with a band of 

 white hairs at the apex of the 2nd, 3rd, and 4th seg- 

 ments ; apical fimbria black. Posterior tibiae and meta- 

 tarsi clothed with \evy long bright golden-fulvous hairs. 

 Wings slightly dusky. 



(? . Head and thorax densely clothed with pale fulvous 

 hairs, that on the face and below the wings paler. 

 Antennas entirely black, reaching nearly to the scutellum. 

 Abdomen with the first three segments clothed nearly 

 entirely with long pale hairs, the following three with 

 black hairs at the base and a pale band at the apex, the 

 7th with black hairs ; beneath with pale hairs, the 5tli 

 with black, (Jtli nearly glabrous; (for 7th, 8th and geni- 

 talia see pi. xi., figs. 3, Sa, db). Legs clothed with very 

 long pale hairs ; tarsi beneath with bright fulvous hairs. 



? . Vertex of the head clothed with black hairs, face 

 below the antennae with grey. Mesothorax with black 

 hairs across the disk and fulvous-brown hairs round it ; 

 beneath with pale fulvous-grey hairs. Abdomen shining ; 

 apex of each segment smooth and piceous, pubescence of 

 the basal segment pale, that of the others black, the 2nd, 

 3rd, and 4th with a subapical band of white hairs, the 

 upper two narrowly interrupted, 5th and 6th segments 

 densely clothed with erect grey-black hairs ; beneath with 

 the segments densely fringed at the apex with sooty 

 black hairs. Anterior legs clothed with dark hairs in 

 front and pale behind ; intermediate legs with brown 

 hairs, posterior with fulvous, the scopse and metatarsi 

 being covered with extremely long, bright, golden-fulvous 

 hairs, which give the insect a character distinguishing it 

 at once from any other of our British Hymenoptera ; 

 tarsi piceous at the apex. Length 15 — 16 mm. 



Hah. This beautiful insect is not rare in sandy 

 localities, and seems to be pretty well distributed over 

 the South of England, especially along the coast. It 

 appears in July and August. 



CiLissA, LeacJi. 



Leach, Ed. Enc. ix., p. 155. For figures of generic 

 characters see F. Smith, Cat. Brit. Hym., 2nd. ed., 

 pi. vii. 



Labial palpi 4-jointed. Maxillary palpi 6-jointed. 

 Anterior wings with three submarginal cells. Apical 

 joint of the antennae obliquely truncate. 



