104 



APID.E. 



thorax and sides of the metathorax with white pubescence ; the 

 legs mottled with white ; wings hyaline, with their apex beyond 

 the snbmarginal cells fuscous ; a darker fuscous stain beyond the 

 marginal cell. The first segment of the abdomen with a slightly 

 interrupted fascia at its base ; the second segment with a con- 

 tinuous fascia, slightly attenuated in the middle, at its basal 

 margin ; at its apical margin laterally, and on the following seg- 

 ment also, there is a minute oblong spot; the fourth and fifth 

 segments with an oblique white line on each side, the fifth segment 

 with a white spot in the middle of its apical margin. 



Hab. Amazons, Ega. 



7. Epeolus albifrons. 



Female. Length 4 lines. — Black; the face clothed with silvery 

 white pubescence. The antennae obscurely rufo-piceous beneath, 

 the scape with white pubescence at the apex ; the mandibles fer- 

 ruginous. The mesothorax and scutellum closely punctured ; the 

 pectus, coxse, and posterior femora with a changeable glittering 

 white pile ; wings subhyaline, iridescent, and with a brown cloud 

 on the anterior margin of the fore wings ; the legs rufo-piceous. 

 Abdomen dark blackish brown ; the second to fourth segments 

 beneath with short silvery white pubescence, and the second, third, 

 and fourth segments above with narrow transverse lines of white 

 pubescence ; the apical segment white at the sides. 



Hab. Para. 



C(ELI0XYS, Latr. 



1. Ccelioxys clypeata. 



Female. Length 5 lines. — Black, the abdomen shining ; the clypeus 

 produced, its anterior margin notched and forming a bilobed apex, 

 the lobes obscurely ferruginous. The sides of the face with pale 

 pubescence ; the eyes pubescent. The thorax strongly punctured ; 

 the posterior margin of the scutellum broadly angular, having a 

 central carina and a lateral short stout tooth ; wings subhyaline, 

 becoming gradually darker fuscous to the apex ; legs ferruginous. 

 Abdomen obscurely ferruginous beneath, smooth, shining, and 

 finely punctured above ; the apex acute ; the ventral apical plate 

 longer than the upper one, very slender and acute at the apex. 



Hab. Tunantins, on the Amazons. 



2. Ccelioxys ignava. 



Female. Length 5 lines. — Black ; head and thorax strongly punc- 

 tured, abdomen finely so ; legs and abdomen beneath ferruginous. 

 The face at the sides and a line behind the eyes of white pubes- 



