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Show 96 MR. W. F. KIRBY ON ORTHOPTERA FROM [Feb. 4, on the sides. Tegmina hyaline with reddish nervures; hind tibiae rather hairy, with eleven teeth on the outer edge. Four specimens (1 o*, 2 $ , 1 nymph) from Baringo, Dec. 20, 1899. There are several closely allied species from East Africa, of which one only (P. altemaia Schulthess, nee Brunner) has hitherto been described. PNORISA. Gomphocerus (Pnorisa) Stal, Eugenie's Resa, p. 341 (1860). 11. PNORISA CAPENSIS. Stenobothrus capensis Walk. Cat. Derm. Salt. B.M. ii. p. 764. n. 62 (1870). Fifteen specimens, Baringo, Dec. 20, 1901. None of these specimens exactly agree with the unique type of the species, which is, besides, in rather poor condition ; but they vary so much among themselves that I cannot consider them distinct. The males have indefinite longitudinal dusky markings on the head and thorax (chiefly on the sides) as in Walker's type ; but the latter has the outer central area of the femora much more completely filled up with blackish than in any of tbe Baringo males, which have only isolated and variable blackish patches on that area, the largest towards the extremity. In the female there is a broad blackish band running backwards from the eye, over the sides of the pronotum, and a portion of the tegmina, and more or less distinctly bordered above and below by yellow lines. The central area of the hind femora is filled up externally in its upper half with a black stripe, broken into three parts, and is bordered on the upperside above by two longer and narrower black stripes. LOCUSTIN^E. CHLCEBORA. Chluibora Sauss. Mem. Soc. Geneve, xxviii. (9) pp. 54, 132 (1884) ; xxx. (1) pp. 18, 19, 33 (1888). 12. CHLOSBORA THALASSINA, sp. n. Exp. al. 80 mm.; long. corp. 36 mm. Female. Rufo-testaceous ; carina of the pronotum very slightly raised, subobsolete behind, hinder half set with large granules, and shorter and more rounded behind than in Humbe tenuicornis Schaum. Tegmina with two oblique brown bands, the first at one-quarter of the length, and the second, much narrower and less complete, about the middle, bounding the outer subhyaline area. Costal area spotted with brown, especially about the first brown band. Beyond the lower extremity of the narrow outer band a series of linear blackish marks runs along the inner margin. Wings greenish yellow (possibly bright yellow in |