196 HYMENOPTERA. 
an elongated V-shaped mark formed of short bright silvery pu- 
bescence, not quite reaching the base of the wings; the legs 
have a deep violet splendour, and the abdomen partakes of a 
similar colouring. 
Hab. Brazil (Amazons). (Coll. W. W. Saunders, Esq.) 
27. PEPSIS VENUSTA. B.M. 
Male. Length 10 lines.—Black: the entire insect clothed 
with a dark blue-green pilosity, varied with black in certain 
lights ; the apical joint of the antennze orange; the wings black, 
with varying shades of metallic blue and green in different lights, 
the apex of the anterior wings white, the white commencing at 
the extreme apex of the marginal cell ; the abdomen bright green, 
very rich and vivid in certain lights; the metathorax traps- 
versely rugose and black. 
Hab. Brazil (Tapajos). 
98. PEPSIS DEUTEROLEUCA. B.M. 
Male. Length 10-12 lines.—Black : clothed with an obscure 
blue pilosity, which in certain lights is intensely brilliant, parti- 
cularly on the insect beneath ; antennz black; the metathorax 
transversely rugose-striate, its posterior lateral angles slightly 
produced ; wings black and shining, the posterior pair white at 
their apex, in some specimens the tips are yellowish-white ; the 
abdomen has a thick floccus of hair on each side of the fourth 
segment beneath. 
Hab. Brazil (Santarem). (Coll. H. W. Bates.) 
29. PrepsIS TERMINATA. B.M. 
Pepsis terminata, Dahlb. Hym. Europ. i. 120. 6. 
Pepsis ornata, St. Farg. Hym. iti. 486. 29. 
Hab. South America. 
30. PEPSIS NIGRESCENS. B.M. 
Male. Length 14 lines.—Black : clothed with short black 
velvety pubescence ; the cheeks, prothorax and metathorax 
having a long thin black pubescence ; the legs have a dark purple 
pilosity, observable im certain lights; the metathorax elongate, 
transversely rugose, convex in the middle, longitudinally de- 
pressed on each side, and subcarinate at its lateral margins, which 
are slightly produced posteriorly; wing dark blackish-brown, 
and having a splendid violet and blue inidescence. Abdomen 
