2. Pelopaeus Bengalensis, _Dahlb. Syst. Nat._ i. 941. 2. _Hab._ India, Philippine Islands, China, Isle of France, Celebes. 3. PELOPAEUS INTRUDENS. _P._ niger; clypeo bidentato, tibiis anticis et intermediis, femorumque apice, femoribusque posticis basi, trochanteribus, tibiarum dimidio basali, petioloque rufescenti-flavis; alis fulvo-hyalinis. _Female._ Length 11 lines. Black; the face with silvery pubescence; the clypeus with two large blunt teeth at its apex, formed by a deep notch in its anterior margin; the scape reddish-yellow in front. The meso- and metathorax transversely striated; the wings fulvo-hyaline, the nervures ferruginous; the anterior and intermediate tibiae and the femora at their apex, the posterior femora at their base, the trochanters, the tibiae with their basal half and the middle of the basal joint of the posterior tarsi, reddish-yellow; the petiole of the abdomen of a paler yellow; the abdomen smooth and shining. The male only differs in being rather smaller. _Hab._ Celebes. Mr. Wallace says of this species, "A common house-wasp in Macassar; builds mud cells on rafters." _Note._--In describing the species of this genus collected by Mr. Wallace at Borneo, I incorrectly gave that locality for _P. javanus_. The insect mistaken for that species may be shortly characterized as P. _benignus_, length 12 lines. Opake-black, with the petiole shining; the metathorax transversely striated; the wings pale fulvo-hyaline, the nervures ferruginous; the scape in front, the anterior and intermediate tibiae, the apex of the femora, and the basal joint of the tarsi reddish-yellow; the posterior legs, with the trochanters and basal half of the femora, yellow. 4. PELOPAEUS FLAVO-FASCIATUS. _P._ niger; capite thoraceque flavo variegato; pedibus abdominisque basi ferrugineis; alis hyalinis, apice fuscis, abdominisque segmento tertio fascia lata flava ornato. _Female._ Length 9 lines. Black; the clypeus yellow; the mandibles and scape ferruginous, the former black at their base, the latter yellow in front; the sides of the face with a bright golden pile. Thorax: the posterior margin of the prothorax, the tegulae, scutellum, and a quadrate spot on each side of the metathorax at its base yellow; the legs ferruginous, with the coxae, trachanters, and claw-joint of the tarsi black; wings fulvo-hyaline, the nervures ferruginous, a fuscous spot at the apex of the anterior pair; the meso- and metathorax transversely striated, the latter with a yellow spot at the insertion of the petiole. Abdomen: the petiole slightly curved upwards, the first segment ferruginous; a broad yellow fascia at the apex of the third segment, the apex of the fourth with a narrow obscure fascia; the abdomen covered with a fine silky pile. _Hab._ Celebes. Fam. BEMBICIDAE, _Westw._ 1. Bembex trepanda, _Dahlb. Hym. Europ._ i. p. 181. _Hab._ India, Celebes. Fam. LARRIDAE. Genus LARRA, _Fabr._ 1. Larra prismatica, _Smith, Journ. Proc. Linn. Soc._ ii. p. 103.