1^ HYMENOPTERA. 



margins darkest, the nervures ferruginous ; the extreme apex, 

 in some examples subhyaline ; a minute hyaline spot at the 

 base of the second diseoidal cell ; the tibiae and tarsi rufo-fer- 

 ruginous, tips of the claws black. Abdomen : the basal seg- 

 ment entirely, and the apical margins of the four following, 

 having a band, and the fifth and sixth segments entirely covered 

 with golden pile ; the apex rufo-testaceous and clothed with 

 fulvous pubescence. 



Hab. Brazil (Para; Santarem ; Tapajos). (Coll. H. W. Bates.) 



Small specimens of this species have the lateral tubercles and 

 central produced point nearly obsolete, the antenn?e of a brighter 

 colour, and the entire insect nearly covered with brilliant golden 

 effulgent pile. 



12. Pepsis albocincta. B.M. 



Male. Length 15 lines. — Black : the head, thorax on the 

 sides and beneath, the legs and abdomen clothed with a deep 

 blue pilosity, varying in brightness in different lights ; the thorax 

 is black above, the metathorax transversely rugose, having a 

 longitudinal impressed line down the centre, and covered with a 

 scattered long black pubescence ; antennae black, with two or 

 three of the apical joints orange ; wings very dark fusco-ferru- 

 ginous ; the second diseoidal cell having a minute hyaline spot 

 at its base ; the apical and posterior margins of the wings white. 



Hab. Brazil (Santarem). (Coll. H. W. Bates.) Columbia. 



The female in the collection of W. W. Saunders, Esq. 



Female. Length 1 inch 9 lines. — This sex has the wings 

 margined as in the other sex, the antennse black, the metathorax 

 transversely rugose ; the entire insect decorated with a splendid 

 changeable blue and green pilosity ; the legs thicker than is 

 usual in this genus, and densely ciliated with stout spines, the 

 posterior tibiae strongly serrated on their outer edge. 



13. Pepsis ferruginipennis. 



Pompilus ferruginipennis, Halid. Trans. Linn. Soc. xvii. 326. 40. 

 Hab. Brazil. (Coll. W. W. Saunders, Esq.) 



14. Pepsis fumipennis. 



Female. Length 16 lines. — Black : the head and thorax with 

 an obscure aeneous tinge ; the seven apical joints of the antennae 

 cream-coloured; the wings smoky hyaline, the anterior pair 



