SMITH ON HYMEKOPTEBA OF ABU ISLANDS. 155 



Female. Length 5 lines. Black ; the face silvery ; the anterior mar- 

 gin of the clypeus rounded and narrowly smooth and shining ; tips of 

 the mandibles ferruginous; the mandibles elongate and pale rufo- 

 testaceous. Thorax : the metathorax finely transversely rugose, the 

 sides with bright silvery-white pubescence ; the coxse, the thorax be- 

 neath and on the sides, with fine silky sericeous pile ; the anterior 

 tibiae and tarsi, and all the femora at their apex beneath, ferruginous ; 

 wings hyaline and iridescent, nervures black ; the outer margin of the 

 - tegulae testaceous. Abdomen shining, and with a fine silvery seri- 

 ceous pile ; the apical margins of the segments narrowly rufo-pice- 

 ous ; the terminal segment with an elongate, smooth, shining space, 

 which extends to the apex, which is testaceous. 



Hah. Aru. 



5. Agenia Alcyone. A. nigra, pilis sericeis cinereis vestita; an- 

 tennis pedibusque ferrugineis, alis hyalinis ; abdomine petiolato ; mar- 

 ginibus apicalibus segmentorum flavis. 



Male. Length 7 lines. Black ; the antennae, tips of the mandibles, 

 and the legs ferruginous ; the scape in front, a narrow line on the 

 inner orbit of the eyes, and the anterior portion of the clypeus yellow ; 

 the antennae fuscous above towards their base. Thorax : the femora 

 beneath towards their base, the trochanters and coxae, except their 

 apex, black; the apical joints of the intermediate and posterior tarsi 

 fuscous; wings hyaline, the nervures fusco-ferruginous, the tegulae 

 reddish-yellow. Abdomen petiolated ; the apical margins of the seg- 

 ments with reddish-yellow fasciae ; beneath, the margins of the seg- 

 ments are rufo-piceous, not fasciated. 



Hah. Aru. 



6. Agenia Amalthea. A. nigra, pilis tenuibus cinereis sericeis ves- 

 tita ; antennis antice pedibusque anticis et intermediis antice fen'u- 

 gineis ; abdomine petiolato ; alis hyalinis bifasciatis. 



Female. Length 6 lines. Black ; the face densely covered with silvery 

 pile ; the antennae in front, the anterior margin of the clypeus and 

 the tips of the mandibles ferruginous ; palpi elongate and pale rufo- 

 testaceous. Thorax : the posterior margin of the prothorax narrowly, 

 the tegulae, the anterior and intermediate femora in front, the poste- 

 rior pair towards their apex beneath, the anterior tibiae and tarsi, the 

 intermediate and posterior tibiae more or less beneath, and their tarsi, 

 ferruginous ; the tarsi sometimes dusky above ; the wings hyaline, a 

 narrow fuscous fascia at the apex of the extemo-medial cell, and a 

 broad one crossing at, and being the width of, the second and third 

 submarginal cells; tips of the wings milky-white; the metathorax 

 rounded posteriorly, transversely finely rugose and densely covered 

 with short silvery-white pubescence at the sides and apex. Abdomen 

 petiolated, smooth and shining, with the apex and the margins of the 

 segments narrowly rufo-piceous. 



Hah. Aru, 



