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Show 100 MR. W. F. KIRBY ON ORTHOPTERA FROM [Feb. 4, 22. HETERACRIS BETTONI, sp. n. Male. Long. corp. 31-40 millim. ; long. al. ant. 14-15 millim.; long. fern. post. 16-17 millim. Female. Long. corp. 31-40 millim.; long. al. ant. 20-34 millim.; long. fern. post. 25-33 millim. Chestnut-reel, lighter in the male than in the female ; vertex much contracted between the eyes, with a shallow depression triangularly expanded on each side beyond the contraction : this is intersected by a slight carina, the continuation of the middle carina of the pronotum. Pronotum with the hinder lobe granulated ; in front of this portion extends a brown shade, divided by the central carina, and narrowing in front, but filling up most of the centre of the pronotum and vertex as far as the end of the depression on the latter. Head finely punctured; sides of the pronotum more sparingly but more coarsely punctured than the hinder part, and with two very large pits below the lateral carina in front of the first suture, and behind these two others between the two sutures in the female, but only a still larger one in the male; below this, on the middle of the central lobe of the pronotum, is an oblong yellow carina. Legs red, first and second pairs short, hind legs very long, femora with the basal half moderately thickened; tibia? about as long as the femora, with from twelve to fourteen spines, slightly black-tipped, and gradually increasing in length from the base to the extremity. First and third joints of tarsi of about equal length, the first thickened in the middle, especially beneath ; the second about three-fifths as long. Tegmina brownish hyaline, -with dark nervures and the outlines of several large spots ; some of the longitudinal nervures and intermediate spaces are reddish, especially above and below the central area; in closed specimens the lower red stripe is seen to be continuous with the red borders of the pronotum. Wings clear hyaline, with brown and reddish nervures. Described from three males and one female from Baringo (Johnston); one female from Maungu, B. E. Africa (Betton); one female from Thika-Thika, B. E. Africa (Gregory); one female from Mombasa (Dr. J. Wilson); one female from Atbara, Abyssinia (purchased). The female from Baringo is smaller than any of the others. Apparently allied to Heteracris speciosa Walk, from Sierra Leone, of which the Museum at present possesses only the type, an immature specimen. CALOPTENOPSIS. Caloptenopsis Bolivar, Join. Sci. Lisb. (2) i. p. 173 (1889). Head with the vertex between the eyes narrowed and tri-carinate, the carina? very short, and formed by an oblong fovea on each side of the central carina ; beyond this point the vertex slopes smoothly into the broad frontal ridge, which is not sulcated but sparingly punctured, and is nearly straight. Thorax broad, tricarinate, "depressed," with the central carina higher than |