The geographical distribution of animals, with a study of the relations ...
The geographical distribution of animals, with a study of the relations ... The geographical distribution of animals, with a study of the relations ...
;264 ZOOLOGICAL GEOGRAPHY. [part hi.endeavour to ascertain the meaning of this special relation ata subsequent stage of our inquiries.Plate V.— River Scene in West Africa, with CharacteristicAnimals.—Our artist has here well represented the luxurianceand beauty of a tropical forest; and the whole scene issuch as might be witnessed on the banks of one of therivers of equatorial West Africa. On the right we see ared river-hog (Potamochcerus penicillatus), one of the handsomestof the swine family, and highly characteristic of theWest African sub-region. In a tree overhead is the potto{Perodicticus potto), one of the curious forms of lemur confinedto West Africa. On the left is the remarkable Potamogalevelox, firstdiscovered by Du Chaillu,—an Insectivorousanimal, with the form and habits of an otter. On the otherside of the river are seen a pair of gorillas {Troglodytes gorilla),the largest of the anthropoid apes.The bird on the wing isthe Whyclah finch (Vidua paradisea),remarkable for the enormous plumes with which the tailof themale bird is decorated during the breeding season. The crestedbird overhead is one of the beautiful green touracos (TuracusmacrorhyncJius), belonging to the Musophagida?, or plantain-eaters,a family wholly African, and most abundant in the westernsub-region.Reptiles.—In this class we find a large number of peculiarforms ;13 genera of snakes, 3 of lizards, and 2 of tortoises beingconfined to the sub-region. The snakes are Pariaspis, Elapops,and Prosymna (Calamariidas), Rhamnophis, Herpetcthiops, andGrayia (Colubrida?,), Neusterophis and Limnophis (Homalopsidse),Simocephalus and Holurophis (Lycodontidae) ; Pclophilus (Pythonidie); Plapsoidea (Elapidae) ;and Atheris (Viperidae). Thelizards are Balophia (Lepidosternidae) ; Otosaurus (Scincidse)Psilodactylus (Geckotidas). The tortoises, Cinyxis (Testudinidaa)and Tetrathyra (Trionichidse).Amphibia.—Of Amphibia, there are 2 peculiar genera of treefrogs,Hylambatis and Hcmimantis, belonging to the Polypedatidse.
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;264 ZOOLOGICAL GEOGRAPHY. [part hi.endeavour to ascertain <strong>the</strong> meaning <strong>of</strong> this special relation ata subsequent stage <strong>of</strong> our inquiries.Plate V.— River Scene in West Africa, <strong>with</strong> CharacteristicAnimals.—Our artist has here well represented <strong>the</strong> luxurianceand beauty <strong>of</strong> a tropical forest; and <strong>the</strong> whole scene issuch as might be witnessed on <strong>the</strong> banks <strong>of</strong> one <strong>of</strong> <strong>the</strong>rivers <strong>of</strong> equatorial West Africa. On <strong>the</strong> right we see ared river-hog (Potamochcerus penicillatus), one <strong>of</strong> <strong>the</strong> handsomest<strong>of</strong> <strong>the</strong> swine family, and highly characteristic <strong>of</strong> <strong>the</strong>West African sub-region. In a tree overhead is <strong>the</strong> potto{Perodicticus potto), one <strong>of</strong> <strong>the</strong> curious forms <strong>of</strong> lemur confinedto West Africa. On <strong>the</strong> left is <strong>the</strong> remarkable Potamogalevelox, firstdiscovered by Du Chaillu,—an Insectivorousanimal, <strong>with</strong> <strong>the</strong> form and habits <strong>of</strong> an otter. On <strong>the</strong> o<strong>the</strong>rside <strong>of</strong> <strong>the</strong> river are seen a pair <strong>of</strong> gorillas {Troglodytes gorilla),<strong>the</strong> largest <strong>of</strong> <strong>the</strong> anthropoid apes.<strong>The</strong> bird on <strong>the</strong> wing is<strong>the</strong> Whyclah finch (Vidua paradisea),remarkable for <strong>the</strong> enormous plumes <strong>with</strong> which <strong>the</strong> tail<strong>of</strong> <strong>the</strong>male bird is decorated during <strong>the</strong> breeding season. <strong>The</strong> crestedbird overhead is one <strong>of</strong> <strong>the</strong> beautiful green touracos (TuracusmacrorhyncJius), belonging to <strong>the</strong> Musophagida?, or plantain-eaters,a family wholly African, and most abundant in <strong>the</strong> westernsub-region.Reptiles.—In this class we find a large number <strong>of</strong> peculiarforms ;13 genera <strong>of</strong> snakes, 3 <strong>of</strong> lizards, and 2 <strong>of</strong> tortoises beingconfined to <strong>the</strong> sub-region. <strong>The</strong> snakes are Pariaspis, Elapops,and Prosymna (Calamariidas), Rhamnophis, Herpetcthiops, andGrayia (Colubrida?,), Neusterophis and Limnophis (Homalopsidse),Simocephalus and Holurophis (Lycodontidae) ; Pclophilus (Pythonidie); Plapsoidea (Elapidae) ;and A<strong>the</strong>ris (Viperidae). <strong>The</strong>lizards are Balophia (Lepidosternidae) ; Otosaurus (Scincidse)Psilodactylus (Geckotidas). <strong>The</strong> tortoises, Cinyxis (Testudinidaa)and Tetrathyra (Trionichidse).Amphibia.—Of Amphibia, <strong>the</strong>re are 2 peculiar genera <strong>of</strong> treefrogs,Hylambatis and Hcmimantis, belonging to <strong>the</strong> Polypedatidse.
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