Mammalia.—There are a few groups of Palæarctic Mammalia that are peculiar to this sub-region. Such are, Dama, the fallow deer, which is now found only in South Europe and North Africa; Psammomys, a peculiar genus of Muridæ, found only in Egypt and Palestine; while Ctenodactylus, a rat-like animal classed in the South American family Octodontidæ, inhabits Tripoli. Among characteristic genera not found in other sub-regions, are, Dysopes, a bat of the family Noctilionidæ; Macroscelides, the elephant shrew, in North Africa; Genetta, the civet, in South Europe; Herpestes, the ichneumon, in North Africa and (?) Spain; Hyæna, in South Europe; Gazella, Oryx, Alcephalus, and Addax, genera of antelopes in North Africa and Palestine; Hyrax, in Syria; and Hystrix, the porcupine, in South Europe. Besides these, the camel and the horse were perhaps once indigenous in the eastern parts of the sub-region; and a wild sheep (Ovis musmon) still inhabits Sardinia, Corsica, and the mountains of the south-east of Spain. The presence of the large feline animals—such as the lion, the leopard, the serval, and the hunting leopard—in North Africa, together with several other quadrupeds not found in Europe, have been thought by some naturalists to prove, that this district should not form part of the Palæarctic region. No doubt several Ethiopian groups and species have entered it from the south; but the bulk of its Mammalia still remains Palæarctic, although several of the species have Asiatic rather than European affinities. The Macacus innuus is allied to an Asiatic rather than an African group of monkeys, and thus denotes an Oriental affinity. Ethiopian affinity is apparently shown by the three genera of antelopes, by Herpestes, and by Macroscelides; but our examination of the Miocene fauna has shown that these were probably derived from Europe originally, and do not form any part of the truly indigenous or ancient Ethiopian fauna. Against these, however, we have the occurrence in North Africa of such purely Palæarctic and non-Ethiopian genera as Ursus, Meles, Putorius, Sus, Cervus, Dama, Capra, Alactaga; together with actual European or West Asiatic species of Canis, Genetta, Felis, Putorius, Lutra, many bats, Sorex, Crocidura, Crossopus, Hystrix, Dipus, Lepus, and Mus. It is admitted that, as regards every other group of animals, North Africa is Palæarctic, and the above enumeration shows that even in Mammalia, the intermixture of what are now true Ethiopian types is altogether insignificant. It must be remembered, also, that the lion inhabited Greece even in historic times, while large carnivora were contemporary with man all over Central Europe.
Birds.—So many of the European birds migrate over large portions of the region, and so many others have a wide permanent range, that we cannot expect to find more than a few genera, consisting of one or two species, each, confined to a sub-region; and such appear to be, Lusciniola and Pyrophthalma, genera of Sylviidæ. But many are characteristic of this, as compared with other Palæarctic sub-regions; such as, Bradyptetus, Aedon, Dromolœa, and Cercomela, among Sylviidæ; Crateropus and Malacocercus, among Timaliidæ; Telophonus among Laniidæ; Certhilauda and Mirafra among larks; Pastor among starlings; Upupa, the hoopoe; Halycon and Ceryle among kingfishers; Turnix and Caccabis among Gallinæ, and the pheasant as an indigenous bird; together with Gyps, Vultur and Neophron, genera of vultures. In addition to these, almost all our summer migrants spend their winter in some part of this favoured land, mostly in North Africa, together with many species of Central Europe that rarely or never visit us. It follows, that a large proportion of all the birds of Europe and Western Asia are to be found in this sub-region, as will be seen by referring to the list of the genera of the region. Palestine is one of the remote portions of this region which has been well explored by Canon Tristram, and it may be interesting to give his summary of the range of the birds. We must bear in mind that the great depression of the Dead Sea has a tropical climate, which accounts for the presence here only, of such a tropical form as the sun-bird (Nectarinea osea).
The total number of the birds of Palestine is 322, and of these no less than 260 are European, at once settling the question of the general affinities of the fauna. Of the remainder eleven belong to North and East Asia, four to the Red Sea, and thirty-one to East Africa, while twenty-seven are peculiar to Palestine. It is evident therefore that an unusual number of East African birds have extended their range to this congenial district, but most of these are desert species and hardly true Ethiopians, and do not much interfere with the general Palæarctic character of the whole assemblage. As an illustration of how wide-spread are many of the Palæarctic forms, we may add, that seventy-nine species of land birds and fifty-five of water birds, are common to Palestine and Britain. The Oriental and Ethiopian genera Pycnonotus and Nectarinea are found here, while Bessornis and Dromolæa are characteristically Ethiopian. Almost all the other genera are Palæarctic.
Persia is another remote region generally associated with the idea of Oriental and almost tropical forms, but which yet undoubtedly belongs to the Palæarctic region. Mr. Blanford's recent collections in this country, with other interesting information, is summarised in Mr. Elwes's paper on the "Geographical Distribution of Asiatic Birds" (Proc. Zool. Soc. 1873, p. 647). No less than 127 species are found also in Europe, and thirty-seven others belong to European genera; seven are allied to birds of Central Asia or Siberia, and fifteen to those of North-East Africa, while only three are purely of Indian affinities. This shows a preponderance of nearly nine-tenths of Palæarctic forms, which is fully as much as can be expected in any country near the limits of a great region.
Reptiles and Amphibia.—The climatal conditions being here more favourable to these groups, and the genera being often of limited range, we find some peculiar, and several very interesting forms. Rhinechis, a genus of Colubrine snakes, is found only in South Europe; Trogonophis, one of the Amphisbænians—curious snake-like lizards—is known only from North Africa; Psammosaurus, belonging to the water lizards (Varanidæ) is found in North Africa and North-West India; Psammodromus, a genus of Lacertidæ, is peculiar to South Europe; Hyalosaurus, belonging to the family Zonuridæ, is a lizard of especial interest, as it inhabits North Africa while its nearest ally is the Ophisaurus or "glass snake" of North America; the family of the scinks is represented by Scincus found in North Africa and Arabia. Besides these Seps, a genus of sand lizards (Sepidæ) and Agama, a genus of Agamidæ, are abundant and characteristic.
Of Amphibia we have Seiranota, a genus of salamanders found only in Italy and Dalmatia; Chioglossa, in Portugal, and Geotriton, in Italy, belonging to the same family, are equally peculiar to the sub-region.
Freshwater Fish.—One of the most interesting is Tellia, a genus of Cyprinodontidæ found only in alpine pools in the Atlas mountains. Paraphoxinius, found in South-East Europe, and Chondrostoma, in Europe and Western Asia, genera of Cyprimidæ, seem almost peculiar to this sub-region.
Insects—Lepidoptera.—Two genera of butterflies, Thais and Doritis, are wholly confined to this sub-region, the former ranging over all Southern Europe, the latter confined to Eastern Europe and Asia Minor. Anthocharis and Zegris are very characteristic of it, the latter only extending into South Russia, while Danais, Charaxes, and Libythea are tropical genera unknown in other parts of Europe.
Coleoptera.—This sub-region is very rich in many groups of Coleoptera, of which a few only can be noticed here. Among Carabidæ it possesses Procerus and Procrustes, almost exclusively, while Brachinus, Cymindis, Lebia, Graphipterus, Scarites, Chlænius, Calathus, and many others, are abundant and characteristic. Among Lamellicorns—Copridæ, Glaphyridæ, Melolonthidæ, and Cetoniidæ abound. Buprestidæ are plentiful, the genera Julodis, Acmæodera, Buprestis, and Sphenoptera being characteristic. Among Malacoderms—Cebrionidæ, Lampyridæ, and Malachiidæ abound. The Tenebrioid Heteromera are very varied and abundant, and give a character to the sub-region. The Mylabridæ, Cantharidæ, and Œdemeridæ are also characteristic. Of the immense number of Curculionidæ—Thylacites, Brachycerus, Lixus, and Acalles may be mentioned as among the most prominent. Of Longicorns there are few genera especially characteristic, but perhaps Prinobius, Purpuricenus, Hesperophanes, and Parmena are most so. Of the remaining families, we may mention Clythridæ, Hispidæ, and Cassididæ as being abundant.
The Mediterranean and Atlantic Islands.—The various islands of the Mediterranean are interesting to the student of geographical distribution as affording a few examples of local species of very restricted range, but as a rule they present us with exactly the same forms as those of the adjacent mainland.[[6]] Their peculiarities do not, therefore, properly come within the scope of this work. The islands of the Atlantic Ocean belonging to this sub-region are, from their isolated position and the various problems they suggest, of much more interest, and their natural history has been carefully studied. We shall therefore give a short account of their peculiar features.