of Brazilian Pompilide. 265 
4. Agena femorata. 
A, nigra, pubescens, facie argentate pubescente, alis hyalinis et iride- 
scentibus, femoribus ferrugineis. 
Male. WUength 4lines. Black; the face clothed with silvery pubes- 
cence; the cheeks have a thin pubescence of the same colour; the 
mandibles pale testaceous in the middle and ferruginous at the apex. 
Thorax: the sides and the coxe with silvery pile and scattered cinere- 
ous pubescence ; the femora ferruginous, with extreme base and apex 
black; the calcaria pale testaceous ; the wings hyaline and iridescent, 
the nervures black. Abdomen smooth and shining, and thinly covered 
with cinereous pile; the apical margins of the segments narrowly 
testaceous ; the basal segment forming a petiole. 
Hab, Villa Nova (River Amazon). In the National Collection. 
5. Agenia ruficeps. 
A. capite, prothorace antennarumque basi rubris, thorace pedibusque nigris, 
abdomine purpureo. 
Female. Length 4 lines. The head and prothorax blood-red, the 
scape and base of the flagellum red, the seventh to the tenth joints in- 
clusive white, the apical joint fuscous; the thorax and legs black, 
with the mesothorax above and the scutellum obscurely blue; the 
thorax beneath, the coxe, and metathorax with a thin silky silvery 
pile. Wings hyaline, with a brown fascia crossing the superior pair at 
the apex of the externo-medial cell; a cloud also occupies the base of 
the marginal cell, the second and third submarginal cell, and the apex 
of the third discoidal cell. Abdomen with a short petiole, of an obscure 
purple, and very smooth and shining. 
Hab. Ega (Brazil). In the National Collection. 
6. Agena volatilis. 
A. nigra, antennis aurantiaco-flavis; alis hyalinis, pari primo fusco- 
bifasciato. . 
Female. Length 4 lines. Black, and covered with a changeable 
silky cinereous pile, that on the coxee, metathorax, and clypeus having 
a silvery lustre; the mandibles ferruginous at their apex ; the antenn 
orange-yellow, the scape with a fuscous spot above. Thorax: the wings 
hyaline, inclining to milky white at their apex, a brown fascia crosses 
the superior pair at the apex of the externo-medial cell, and a cloud 
occupies the second submarginal cell, the base of the marginal and 
third submarginal, as well as the apex of the third discoidal cell, Abdo- 
men subpetiolate, and very smooth and shining. 
Hab. Kga (Brazil). In the National Collection, 
7. Agenia abdominalis. 
A. nigra, abdomine rubro; alis hyalinis, fasciis duabus angustis fuscis 
ornatis, 
vu 2 
