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Show 1896.] ON LEPIDOPTERA F R O M NYASA-LAND. 817 known to the Tunisian Arabs by the name of Ghazel ahled or Resel abled, meaning the White Gazelle, its Algerian name Beem or Rim being apparently unknown in Tunis. It seems to be a true desert species, never occurring out of the sand-dune country, where it replaces G. dorcas; and while the home of the latter species is the semi-desert country, with its vast stony plains, covered with scanty scrub vegetation, the habitat of G. loderi is undoubtedly the more arid region of sand wastes further south. Herr Spatz, who has resided for several years in the south of Tunis, and is well acquainted with this Gazelle, informs me that it is common in the inland country of the extreme south of the Regency, being first met with at about 25 to 30 miles south of the Chott Djerid. In the districts where it occurs it is plentiful, and is generally to be found in small herds ; but owing to its very pale colour, which harmonizes so well with that of the desert surroundings, it is not easily distinguished at a distance, and being, moreover, extremfily shy and wary, a near approach is not often possible. The nomad Arabs, however, who are nearly all sportsmen, kill a good many, and every year some 500 to 600 pairs of horns of this species are brought by the caravans coming from the interior to Gabes, where they find a ready sale among the French soldiery. Herr Spatz confirms what Sir Edmund Loder says of this species never drinking, and, as to its food, says it subsists on the leaves and berries of the few desert plants to be found in the sand wastes. The female of G. loderi, according to Spatz, often has two young ones at a birth, differing in this respect from G. dorcas, which seems to have but one. So good a description of G. loderi has been given by Mr. Thomas (P. Z. S. 1894, p. 470), that I can add nothing thereto, except it be merely to say that the coat of this Gazelle is extremely fine and short-haired, and that in specimens which I have the knee-brushes are so slightly developed as to be scarcely noticeable or worthy of the name. 5. On two Collections of Lepidoptera made by Mr. R. Crawshay in Nyasa-land. By A R T H U R G. B U T L E R, Ph.D., F.L.S., P.Z.S., & c , Senior Assistant-Keeper, Zoological Department, British Museum. [Eeceived August 18, 1896.] (Plates XLI. & XLII.) A few^ days before his return to England a small collection of Lepidoptera reached m e from Mr. Crawshay, accompanied by a letter, in which he stated that it was from quite a new locality, "viz. from Senga, the Loangwa Biver valley-which, as you can see, drains into the Upper Zambesi Biver, and not into this lake. 53* |