_Reptiles._--There are 4 peculiar genera of snakes,--_Typhline_, belonging to the blind burrowing snakes, Typhlopidæ; _Lamprophis_ (Lycodontidæ); _Cyrtophis_ and _Pæcilophis_ (Elapidæ), a family which is chiefly Oriental and Australian. Of Lizards there are 10 peculiar genera; _Monotrophis_ (Lepidosternidæ), but with an allied form in Angola; _Cordylus_, _Pseudocordylus_, _Platysaurus_, _Cordylosaurus_, _Pleurostichus_, and _Saurophis_, all peculiar genera of Zonuridæ; _Chamæsaura_, forming the peculiar family Chamæsauridæ; _Colopus_ and _Rhopitropus_ (Geckotidæ). _Amphibia._--Of Amphibia there are 4 peculiar genera: _Schismaderma_ (Bufonidæ); _Brachymerus_ (Engystomidæ); _Phrynobatrachus_ and _Stenorhynchus_ (Ranidæ). These last are allied to Oriental genera, and the only other Engystomidæ are Oriental and Neotropical. _Fresh-water Fish._--Of fresh-water fishes there is 1 genus--_Abrostomus_--belonging to the carp family, peculiar to South Africa. _Insects._--South Africa is excessively rich in insects, and the number of peculiar types surpasses that of any other part of the region. We can only here summarize the results. _Lepidoptera._--Of butterflies there are 7 peculiar genera; 2 belonging to the Satyridæ, 1 to Acræidæ, 3 to Lycænidæ, and 1 to Hesperidæ. _Zeritis_ (Lycænidæ) is also characteristic of this sub-region, although 1 species occurs in West Africa. _Coleoptera._--These are very remarkable. In the family of Cicindelidæ, or tiger-beetles, we have the extraordinary _Manticora_ and _Platychile_, forming a sub-family, whose nearest allies are in North America; as well as _Ophryodera_ and _Dromica_, the latter an extensive genus, which ranges as far north as Mozambique {269}and Lake Ngami. Another genus of this family, _Jansenia_, is common to South Africa and South India. In the large family of Carabidæ, or ground-beetles, there are 17 peculiar South African genera, the most important being _Crepidogaster_, _Hytrichopus_, _Arsinoë_, and _Piezia_. Three others--_Eunostus_, _Glyphodactyla_, and _Megalonychus_--are common to South Africa and Madagascar only. There is also a genus in common with Java, and one with Australia. Of Lucanidæ, or stag-beetles, there are 3 peculiar genera; of Cetoniidæ, or rose-chafers, 14; and of Buprestidæ, 2. In the great family of Longicorns there are no less than 67 peculiar genera--an immense number when we consider that the generally open character of the country, is such as is not usually well suited to this group of insects. They consist of 5 peculiar genera of Prionidæ, 25 of Cerambycidæ, and 37 of Lamiidæ.