The lizards are no less remarkable. The Zonuridæ, abundantly developed in Africa, are represented by one peculiar genus, _Cicigna_. The wide-spread Scincidæ by another peculiar genus, _Pygomeles_. The African Sepsidæ, are represented by three genera, two of which are African, and one, _Amphiglossus_, peculiar. The Acontiadæ are represented by a species of the African genus _Acontias_. Of Scincidæ there is the wide-spread _Euprepes_. The Sepidæ are represented by the African genera _Seps_ and _Scelotes_. The Geckotidæ are not represented by any purely African genera, but by _Phyllodactylus_, which is American and Australian; _Hemidactylus_, which is spread over all the tropics; by two peculiar genera; and by _Uroplatis_, _Geckolepis_, and _Phelsuma_, confined to Madagascar, Bourbon, and the Andaman Islands. The Agamidæ, which are mostly Oriental and are represented in {280}Africa by the single genus _Agama_, have here three peculiar genera, _Tracheloptychus_, _Chalarodon_, and _Hoplurus_. Lastly, the American Iguanidæ are said to be represented by a species of the South American genus _Oplurus_. The classification of Reptiles is in such an unsettled state that some of these determinations of affinities are probably erroneous; but it is not likely that any corrections which may be required will materially affect the general bearing of the evidence, as indicating a remarkable amount of Oriental and American relationship. The other groups are of less interest. Tortoises are represented by two African or wide-spread genera of Testudinidæ, _Testudo_ and _Chersina_, and by one peculiar genus, _Pyxis_; and there are also two African genera of Chelydidæ. The Amphibia are not very well known. They appear to be confined to species of the wide-spread Ethiopian and Oriental genera--_Hylarana_, _Polypedates_, and _Rappia_ (Polypedatidæ); and _Pyxicephalus_ (Ranidæ). _Fresh-water Fishes._--These appear to be at present almost unknown. When carefully collected they will no doubt furnish some important facts. _The Mascarene Islands._ The various islands which surround Madagascar--Bourbon, Mauritius, Rodriguez, the Seychelles, and the Comoro Islands--all partake in a considerable degree of its peculiar fauna, while having some special features of their own. Indigenous Mammalia (except bats) are probably absent from all these islands (except the Comoros), although _Lemur_ and _Centetes_ are given as natives of Bourbon and Mauritius. They have, however, perhaps been introduced from Madagascar. _Lemur mayottensis_, a peculiar species, is found in the Comoro Islands, where a Madagascar species of _Viverra_ also occurs.