STIZUS SPECIOSUS. Ferrugineus, abdomine atro fasciis tribus interruptis flavis. (Long. Corp. fere 1 unc. 6 lin.) SYN. Sphex Speciosus, _Drury_, _App. vol._ 2. (1773.) Vespa tricincta, _Fabr. Ent. Syst._ 2. 254. 5. (1793.) _Syst. Piez._ 254. 5. HABITAT: North America. Head greenish brown: on the top are three little eyes. Mouth furnished with jaws. Eyes large, oblong, and dark brown. Antennæ shorter than the thorax. It has no tongue. Thorax greenish brown. {78}Anterior wings extending beyond the abdomen, being thin and diaphanous. Abdomen furnished with a sting, and entirely black, except the first three rings, which are party-coloured, and mixed with yellow; the middle one being surrounded with that colour. Legs dusky orange, but when living they were probably of a yellow colour. Breast black, but covered with hairs, making it appear of a greyish hue. This is the largest and finest species of the genus to which it belongs. Drury, contrary to his usual practice, is silent as to its habitat, and Fabricius states America generally. I have received it from Mr. Titian R. Peale of Philadelphia. That it is identical with the Vespa tricincta of Fabricius I am enabled to state by an examination of the individual contained in the Banksian Collection, now belonging to the Linnæan Society of London, which was described by Fabricius. TREMEX COLUMBA. Plate XXXVIII. fig. 2. ORDER: Hymenoptera. SECTION: Terebrantia. FAMILY: Siricidæ, _Leach_. GENUS. TREMEX, _Jurine_. Sirex, _Linn. Drury._ TREMEX COLUMBA. Fusca, abdomine nigro lateribus flavo-marginatis alis, nigris. (Long. Corp. 1 unc. 6 lin.) SYN. Sirex Columba, _Linn. Syst. Nat._ 2. 929. 2. _Fabr. Ent. Syst._ 2. 105. 3. _Syst. Piez._ 49. 3. Sirex cinctus, _Drury_, _App. vol._ 2. Sirex pensylvanicus, _De Geer Mem._ 3. _pl._ 30. _f._ 13. HABITAT: North America, New York. Head and thorax brown orange, the former furnished with two jaws. Ocelli distinct. Antennæ 16-jointed, of the length of the thorax, which does not appear separated from the abdomen. Eyes narrow and oblong. Abdomen black, and fringed with yellow; being as broad and thick at the extremity as the middle. Wings dark brown (almost black) and narrow, but not folded. From the upper part of the abdomen, near the middle, issues a tube which covers, like a groove, a rough serrated bristle, being the instrument through which the creature ejects its eggs. Legs brown orange, having a strong tibial spur on each leg. FORMICA RUBRIPES. Plate XXXVIII. fig. 3. ORDER: Hymenoptera. SECTION: Heterogyna. FAMILY: Formicidæ, _Leach_. GENUS. FORMICA, _Auct._ FORMICA RUBRIPES. Brunnea, capite nigro pedibusque brunneo-rubris. (Long. Corp. 9 lin.) SYN. Formica rubripes, _Latr. Hist. Nat. Fourn. p._ 112. Formica barbara, _Drury_, _App. vol._ 2. (nec _Linn._) HABITAT: Sierra Leone.