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Show 1010 DR. J. E. GRAY ON THE RHINOCEROTID^E. [Dec. 12, first pointed out that there were two Asiatic one-horned Rhinocerotes with upper incisors. His specimen, by the misfortunes of war, fell into the hands of Cuvier, and was described by him in the ' Ossemens Fossiles' (ii. 26). Cuvier regards the height of the occipital arch and the want of the apophysis on the upper edge of the intermaxillary as the chief character of the Javan species; but the apophysis is generally absent in the Indian species, it appears only to be found in the skulls of the very old males of that kind. 2. RHINOCEROS UNICORNIS. Indian Rhinoceros. B.M. Skull:-forehead broad, flat, concave ; nose behind the horn convex, subcylindrical, rounded at the sides ; lachrymal oblique, longitudinal, oblong, rather four-sided ; intermaxillary bones broad, thick, with a bony process on the middle of the upper edge; nasal bones short, broad, about two-fifths of the entire length of the nose and crown ; zygomatic arch of the adult rather convex. Rhinoceros unicornis, Linn. S. N. i. 104 ; Gray, List M a m m. B. M . 186 ; Gerrard, Cat. Bones B. M . 286; Cuvier, Oss. Foss. ii. t. 4. f. 1 ; Blainv. Osteog. t. 2 (skull, adult). R. asiaticus, Blumenb. Handb. 10, Abbild. t. 7 B. R. indicus, Cuv. Me'm. Mus. t. ; Oss. Foss. ii. 5, t. 1-4 (bones); F. Cuv. M a m m . Lithogr. t. ; Schinz, Syn. 333 ; Owen, Cat. Osteol. R. C. S. 513, nos. 2975 to 3074. Indian Rhinoceros, Parsons, Phil. Trans. 1742-43, p. 525, t. 1, 2 (from life). Rhinoceros inermis, Lesson, Cat. Hab. India. The skull figured by Cuvier and by De Blainville for the skull of R. unicornis, probably from the same skull in the Paris Museum, has a broad bony process on the middle of the upper edge of the intermaxillary bones. The skeleton and skull in the British Museum (722 g), from an adult male specimen that lived for several years in the Zoological Gardens, has this bony process well marked; so that it seems common in the species, if not a peculiar character of it. Mr. Blyth thinks that " the adult male Rhinoceros that lived in the Zoological Gardens for several years, stated to have been captured in Arakan, was R. sondaicus." He proceeds, " The two Asiatic one-horned species, indeed, resemble each other a great deal more nearly in external appearance than the published figures of them would lead to suppose; certainly no sportsman or ordinary observer would distinguish them apart, unless attention had been specially called to the subject."-Journ. Asiatic Soc. Bengal, xxxi. 1862, p. 132. This explains how tbe species, now described for the first time, may have been overlooked. In the British Museum there is the skeleton (722 g) with the skull of an adult animal that lived for several years in the Zoological Gardens, referred to by Mr. Blyth, and a skull from a just born animal, which was presented by Mr. Bryan Hodgson from Nepal. There are in the British Museum other skulls which have been |