SMITH ON IIYMENOPTERA OF ARU ISLANDS. 161 



rugose, with cinereous pubescence at the sides ; the antennae and 

 intermediate tibiae, the tarsi, and articulations of the legs reddish- 

 yellow ; wings subhyaline, with a fuscous cloud in the marginal cell, 

 which passes beyond to the apex of the wings ; the nervures fusco- 

 ferruginous ; the tegulae ferruginous. Abdomen shining, covered 

 with a thin, fine, cinereous pile, and with the margins of the segments 

 constricted; the apical margins of the segments with narrow yellow 

 fasciae, that on the fourth abbreviated on each side, on the fifth it is 

 obsolete; beneath, the second segment is opake, finely punctured, 

 and pilose ; the following segments smooth, shining, and with five 

 scattered punctures. 



The Male strongly resembles the female, but is smaller and less varie- 

 gated with yellow ; the face covered with silvery down ; the scape and 

 base of the flagellum ferruginous beneath ; the clypeus yellow, except 

 its extreme base. The thorax black, with the legs rufo-piceous ; the 

 tibiae and tarsi pale ferruginous, variegated with yellow ; the sides of 

 the thorax beneath the wings longitudinally striated in both sexes, 

 most conspicuously so in the male. The abdomen with three narrow 

 interrupted fasciae. 



Hab. Aru. 



2. GoRYTES VAGUS. G. uigcr ; clypeo maculis duabus flavis notato ; 

 postscutello et segmentis primo et secundo fascia apicali flavis, fascia 

 in segment© primo subinterrupto. 



Female. Length 6 lines. Black; the head finely punctured and 

 shining ; the anterior margin of the clypeus emarginate in the middle, 

 and more deeply so on each side ; on each side of the clypeus, at its 

 base, is an oblique yellow spot, and anteriorly it is roughly punctured ; 

 the mandibles roughened at their base, their apical half smooth, 

 shining, and ferruginous, with their apex black. Thorax subopake, 

 very closely punctured, and slightly shining ; the metathorax coarsely 

 longitudinaily rugose-striate ; the postscutellum yellow ; wings sub- 

 hyaline and iridescent, the nervures fusco-ferruginous ; a dark fuscous 

 cloud occupies the marginal cell. Abdomen smooth and shining, 

 with a slightly interrupted fascia a little before the apical margin of 

 the basal segment ; the second segment has a fascia at its apical 

 margin ; both are yellowish white ; the first is gradually widened to- 

 wards the sides of the segment, the second abruptly widened, with the 

 angle of the widened portion pointed inwards ; beneath the abdomen 

 is glossy, with the basal segment closely punctured and subopake ; 

 the margins of abdominal segments slightly constricted. 



Hab. Key Island. 



G-en. Teypoxtlon, Latr. 



1. Trypoxylon ExiMiUM. T. nigrum ; clypeo argentato-pubescente ; 

 abdominis segmentis secundo tertio quartoque basi rubris ; alis hya- 

 linis. 



11* 



