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Show REPTILES. 49 BuFo CHILENSIS. Bibr. Of this species, which has been described under different names by many naturalists, and the synonymy of which has only lately been cleared up by Mons. Bibron, there exist numerous specimens in the collection of Mr. Darwin, who found it at Buenos Ayres, and also in the Archipelago of Chonos, on the west coast of South America. It is certainly remarkable that the same species should be found on the opposite sides of the Continent; but on a careful examination I do not find any specific distinctions between the specimens from the different localities. The Prince de Wied has described it as found at Brazil, under the name of Bufo cinctus, and it is also well known as having been repeatedly procured in Peru and in Chile ; but Mons. Bibron has in his work considered them all as belongiug to but one species. The following account of its habits as given by Mr. Darwin is very curious and interesting :- " These Toads are exceedingly abundant all over the treeless damp mountains of granite, crawling about, and eating during the daytime, and making a noise similar to that which is commonly used in England to quicken horses. Many of them on being touched close their eyes, arch their back, and draw up their legs (as if the spinal marrow was divided), probably as an artifice. They are remarkable from their curious manner of running like theN atter Jack of England; they scarcely ever jump, neither do they crawl like a toad, but run very quickly. Their bright colours give them a very strange appearance. They abound at an elevation of .500 to 2.500 feet." GENus-PHRYNISCUS. PHRYNISCUS NIGRICANS. Weigm. PLATE XX.-FlG. 3, 4, 5. Dorso g 'ranuloso, scabriusculo. Pedibus posticis S1tbpalmatis. Corpore membrisque niuris abdomine maculd maund tmnsverJa ad pm·tem posteriorem et macula rotunda ~ , . 15 ut1·inque medium~ versus, palmis atque plantis, omnibus coccineis. Phryniscus nigricana. Weigm. Nov. Aot. Leop. XVII. p. 264<. Bibr. IIist. Rcpt. VIII. P· 723. Ohaunus formosua. Tschudi Classif. Batrach. Habitat, Maldonado and Bahia Blanca. H |