132 HYMENOPTEUA. 



the wings hyaline, with a ferruginous tinge on the anterior 

 margin of the su])erior pair ; a dark fuscous cloud occupying the 

 marginal cell and extending to the apex of the wing; the ner- 

 vures ferruginous, becoming fuscous towards the apex of the 

 wmgs. Alxlomen : the petiolated basal segment rather darker 

 than the following segments, its apical margin with a narrow 

 yellow l)order; the following segments have a narrow jiale fascia 

 "on their ajncal margins, beneath, but on the upper surface the 

 fascia; are scarcely distinguishalde. 

 Hab. Brazil (Villa Nova). (Coll. H. W. Bates.) 



56. POLYBIA DILIGENS. B.M. 



Female. Length 6 mill. — Black, decorated with yellowish- 

 white markings: the clypeus, sides of the face, two united 

 spots above the insertion of the antennsE, and a narrow line at 

 the outer orbits of the eyes, yellow ; the cljqjeus with a black 

 stripe down the middle, not extending to the apical margin; the 

 mandibles, scape, and flagellum beneath, fulvous. Thorax : a 

 narrow line on the anterior and posterior margins of the pro- 

 thorax, three oblique spots beneath the wings, the anterior and 

 intermediate coxa; in front, the tegula;, two longitudinal stripes 

 on the mesothorax, the scutellum, post-scutellum, and a large 

 spot on each side of the metathorax, yellowish-white ; a fascia of 

 the same colour on the apical margin of the petiolated segment 

 of the abdomen, another on the apical and basal margin of the 

 second segment, and a fascia on the apical margin of the thml 

 segment ; the legs fusco-ferruginous, with the tarsi palest. 



Hab. Brazd (Santarem). (Coll. H. W. Bates.) 



57. PoLYBIA FLAVIFRONS. B.M. 



Female. Length 9 mill.— Black : the face and vertex orange- 

 yellow, with a line at the outer orbit of the eyes and a spot on 

 the man(lil)les at their base of the same colour ; the scape in front 

 and the flagellum beneath, fulvous ; a large cordate black spot 

 on the vertex enclosing the stemmata. Thorax : a narrow line 

 on the posterior margin of the prothorax, an oblique spot beneath 

 the wings, the teguUe and a narrow epaulet passing over them to 

 the scutellum, a "transverse sjjot before the latter emitting two 

 narrow lines which terminate before the anterior margin of the 

 mesothorax, the scutellum, post-scutellum, and a spot on each 

 side of the metathorax, yellow ; the anterior coxa; yellow in 

 front; the legs fusco-ferruginous, palest in front; the wmgs 

 subhyaline, with a narrow fuscous cloud along the anterior 

 margin of the superior pair. Abdomen : the apical margins of 



