. On the anatomy of vertebrates [electronic resource] . Skeleton of Elephant (Elephas Indians) transversely ridged, fig. 161, the ridges sometimes few, some-times mammillate, often numerous and with every intermediategradation. The nose is prolonged into a cylindrical trunk,flexible in all directions, highly sensitive, and terminated by aprehensile appendage like a finger, fig. 162, n : on this organ isfounded the name Proboscidia given to the order. The feetare pentadactyle, but the digits are outwardly indicated only bydivisions of the hoof; the testes are abdominal; the placenta isannular;1
. On the anatomy of vertebrates [electronic resource] . Skeleton of Elephant (Elephas Indians) transversely ridged, fig. 161, the ridges sometimes few, some-times mammillate, often numerous and with every intermediategradation. The nose is prolonged into a cylindrical trunk,flexible in all directions, highly sensitive, and terminated by aprehensile appendage like a finger, fig. 162, n : on this organ isfounded the name Proboscidia given to the order. The feetare pentadactyle, but the digits are outwardly indicated only bydivisions of the hoof; the testes are abdominal; the placenta isannular;1 the mammas are pectoral. 1 Besides the annular placenta there is a suhcircular villous patch at each pole of MAMMALIAN ORDERS. 283. The present order rests with the Ungulata mainly upon itshoofs : the dentition and some other particulars of the organisa-tion of the Elephant, indicate an affinity to the Rodentia: theabdominal testes, the two precavals and exposed cerebellum, arecharacters of the inferior subclasses: but the cerebrum, concomi-tantly with the bulk of the mammal, is large and well convoluted,and the psychical qualities correspond. Theearliest known evidences of Proboscidian Un- 163gulates are from miocene strata. The typical Ungulate quadrupeds are di-vided, according to the odd or even number ofthe toes, into Pekissodactyla and In the former the hoofs may beone (Horse) or three (Rhinoceros, fig. 163):in the latter the hoofs may be two (Giraffe),or four (Hippopotamus), or two functional andtwo ruclimental (most Ruminants, fig. 164). In the Perissodactyle Ungulata—odd-toed pa5££^K2^1>in regard to the hind-foot in all, and with thefore-foot unsymmetrically tetradactyle in the Tapi
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