British Hymenoptera. 169 



front of the eyes more produced than in the other species of the 

 genus ; this is caused partly by the greater length of the cheeks 

 from the eye to the clypeus, and partly by the length of the clypeus 

 itself; mandibles pointed at the apex, not nearly touching the 

 eyes, flavous, with their apices piceous ; labram and clypeus flavous, 

 the latter with a triangular black patch at the base ; sides of the 

 face below the antennae flavous ; face below the antennae densely 

 clothed with silvery hairs. Antennae fulvous, the scape beneath 

 flavous, above black ; the flagellum black above as far as the 6th 

 joint ; 3rd joint only a trifle shorter than the 2nd. Thorax entirely 

 black, except the yellow margins of the tegulae ; wings with piceous 

 nex'vmres ; scutellum with two small yellow spots or spotless. 

 Abdomen black, finely punctured ; 1st, 2nd, and 3rd segments each 

 with a large lateral yellow spot ; 4th, 5th, and 6th with a continuous 

 band ; apical dorsal valve almost entire ; 6th and 7th segments 

 clothed with golden hairs ; beneath with the segments densely 

 fringed at the apex with golden hairs ; 3rd, 4th, and 5th segments 

 yellow at the base ; 6th at the apex, and densely clothed with 

 golden hairs on the yellow portion ; 7th segment narrowly rounded ; 

 8th with a long apical projection, strongly curved, and with a few 

 long hairs on each side of the apex; also with its basal portion 

 clothed with long hairs in front (for genitalia, &c., see PI. VI., 

 figs. 4 — 4&). Legs yellow; posterior and intermediate femora 

 black beneath. 



2 . Very like the ^ , but more shining, and with brighter 

 markings. Head and thorax clothed with fulvous golden hairs ; 

 markings of the face as in the ^ , but of a deeper yellow ; scape of 

 the antennae fulvous in front ; flagellum fulvous, slightly darker 

 towards the apex. Thorax as in the g^ , but the tegulae nearly 

 entirely yellow ; scutellum with two large yellow spots. Abdomen 

 spotted and banded as in the <y ; segments beneath not fringed at 

 the apex ; 5th with a tuft of golden hairs on each side ; 6th smooth 

 and truncate at the apex, with several cmwed spines on each side 

 of the trimcature. Legs fulvous ; femora black at the base. Length, 

 13 — 15 mm. 



Hah. Parasitic on Eucera longicormis, and not rare 

 in many localities in May and June ; near Highgate ; 

 Southgate ; Southend ; Norwich ; Chobham ; Hastings, 

 one $ in August, 1879. 



Easily recognised by its large size and subrostrate 

 head. 



