168 SMITH ON HTMENOPTEEA OF AEU ISLANDS. 



Female. Length 7 lines. Black; the seape in front, the sides and 

 apical margin of the clypeus, and a spot at the base of the mandibles 

 yellow; the cheeks reddish-yellow; the antennae ferruginous; the 

 head covered with short griseous pubescence. Thorax with obscure 

 ferruginous tints and a short griseous pubescence, most dense on the 

 sides and beneath ; the anterior margin of the prothorax, the tegulaj, 

 scutellum and postscutellum, a broad stripe on each side of the 

 metathorax, the coxae, and the anterior and intermediate femora, at 

 their apex beneath, yellow ; the scutellum with a ferruginous stain in 

 the middle, the postscutellum with a black stain, the coxae ferru- 

 ginous above, the tibiae and tarsi ferruginous beneath ; wings hyaline, 

 with a fuscous stain along the anterior margin of the superior pair. 

 Abdomen : a yellow fascia on the apical margin of the first and second 

 segments ; that on the following segments rufo-testaceous. 



Hab. Aru. 



6. IcARiA UNicoLOR. I. rufesccnti-fusca, tenuiter cinereo-pubescens. 



Female. Length 5 lines. Reddish-brown, covered with a thin cinereous 

 pubescence; the clypeus acutely angular anteriorly; the metathorax 

 oblique and delicately striated transversely ; wings fusco-hyaline ; the 

 petiole of the abdomen long, the segment campanulated and narrow. 



Hab. Key Island. 



Gen. PoLiSTES, Latr. 



\. Polistes tepidus, Fabr. Syst. Piez. p. 271. 7- 



Hab. Aru ; Key Island ; Solomon Islands ; New Guinea ; Australia. 



2. Polistes diabolicus, Sauss. Mon. Guepes Soc. 68. 26, t. 6. f. 7- 

 Hab. Aru; Java; Timor. 



3. Polistes stigma, Fabr. Syst. Piez. p. 261, 41. 

 Hab. Aru; Celebes; Ceram; India. 



Var. The specimens from Aru differ from the typical ones in wanting 

 the two longitudinal yellow lines on the metathorax, which is entirely 

 black. Saussure has a variety with the metathorax black between the 

 lines ; of two examples from Celebes, one has the yellow lines entire, 

 the other has them abbreviated at half their length. 



4. Polistes nigrifrons. P. capite thoraceque nigris, flavo et ferru- 

 gineo variegatis; abdomine ferrugineo, segmentis basi nigris, mar- 

 ginibus apicalibus flavis. 



Female. Length 8 lines. Head and thorax black ; the anterior margin 

 of the clypeus angular and narrowly rufo-testaceous ; the mandibles, 

 palpi, and antennae ferruginous ; the scape, and flagellum above, 

 except the basal joint, fuscous ; the outer orbits of the eyes with a 

 narrow yellow line. The anterior margin of the prothorax slightly 

 rebordered, the posterior margin ferruginous ; the outer margin of 

 the tegulae reddish-yellow ; wings subhyaline with a fusco-ferruginous 

 stain along the anterior margins of the superior pair ; the metathorax 



