The late lamented Mr. Say, who may justly be regarded as the Linnæus of America, says of this truly singular insect, that its flight is slow and awkward, and when taken it endeavours to force the point of the abdomen through the skin of the hand, but its strength is not adequate to the task. The whole abdomen resembles a much elongated pedicle, from which the abdomen itself, or dilated portion, has been accidentally removed. PLATE XLI. [Illustration] LOCUSTA OBSCURA. Plate XLI. fig. 1. ORDER: Orthoptera. SECTION: Saltatoria. _Family_: Locustidæ. GENUS. LOCUSTA. Gryllus (Locusta) _Linn._ Gryllus, _Fabr._ SUBGENUS: Locusta proper. Oedipoda, _Serv._ LOCUSTA OBSCURA. Thorace lævi; elytris fuscis; alis disco rubro, fasciâ nigrâ, apice hyalinâ. (Expans. Alar. 2 unc. 3 lin.) SYN. Gryllus obscurus, _Linn. Syst. Nat._ 1. 2. 701. 50. _De Geer Ins._ 3. 492. 8. _t._ 41. _f._ 4. _Fabr. Ent. Syst._ 2. 58. 47. HABITAT: Cape Coast, Africa. {88}Antennæ brown and filiform, the length of the thorax. Head clay-coloured, rounded. Thorax smooth, brown, and angulated. Tegmina clay-coloured. Wings next the body red, and surrounded with a broad black bar running up to the anterior edge, the tips being transparent. Legs clay-coloured. Hinder femora broad, and prettily chequered on the outside, the inside being black. Posterior tibiæ red and spined. GRYLLUS (PHYLLOPTERUS) MYRTIFOLIUS. Plate XLI. fig. 2. ORDER: Orthoptera. SECTION: Saltatoria. FAMILY: Gryllidæ (Locustaires, _Latr. &c._) GENUS. GRYLLUS. Sect. Gryllus (Tettigonia), _Linn._ Locusta, _Latr._ SUBGENUS. Phylloptera, _Serv._ GRYLLUS (PHYLLOPTERUS) MYRTIFOLIUS. Thorace subtetragono, lævi; alis deflexis elytris longioribus, oviductu brevissimo recurvo. (Expans. tegm. 1 unc. 6 lin. Alar. 2 unc.) SYN. Gryllus Myrtifolius, _Linn. Syst. Nat._ 1. 2. 696. 18. _Fabr. Ent. Syst._ 2. _p._ 34. _De Geer Mem. vol._ 2. _pl._ 41. _f._ 2. _Stoll. Sauter. pl._ a. 5. _fig._ 16. _Serville Revis. Orth. p._ 45. HABITAT: New York (_Drury_). America (_Fabr. &c._). Antennæ small and filiform. Head dusky yellow. Thorax and abdomen brown, but when the insect was living were probably green; the former has a yellow stripe on each side. Tegmina green, and narrowing towards the tips. Wings thin, transparent, and of a greenish hue. Legs green; the hinder ones being very long, with the tibiæ spined. LOCUSTA (RUTIDODERES) CENTURIO. Plate XLI. fig. 3. ORDER: Orthoptera. SECTION: Saltatoria. FAMILY: Gryllidæ (Locustaires, _Latr. &c._) GENUS. LOCUSTA. Gryllus (Locusta), _Linn._ Acrydium, _Latr._ SUBGENUS: Rutidoderes, _Westw._ LOCUSTA (RUTIDODERES) CENTURIO. Pallidè olivaceo-fulvescens, elytris nigro numerosè punctatis, alis sanguineis margine nigro et interno nigro tesselatis. (Expans. Alar. 3 unc. 3 lin.) SYN. Gryllus Centurio, _Drury_, _App. vol._ 2. HABITAT: The Bay of Honduras, America.