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Show 1867.] DR. J. E. GRAY ON THE RHINOCEROTIDJE. 1011 received from various persons without any special habitat that can be relied on, which appear to belong to this species. They are all without the process on the upper edge of the large thick intermaxillary bones. 1. A fully adult skull (722d), marked "India?". 2. A n adult skull (722f) that was purchased of a dealer, without any specified locality. In the Museum of the Royal College of Surgeons there is the skeleton of an adult animal (no. 2969 a) that formerly had the long front horns of an African Elephant placed on its nasal bones, which Mr. Flower, the present Curator, has properly removed. There are also skulls of half-grown or female animals, with the seventh grinder just showing itself, of thi3 species (nos. 2975, 2976), with a large oblong erect lachrymal. All these skulls have thick intermaxillaries, and the front of the upper jaw, at the base of the intermaxillaries, is not suddenly contracted. In the three adult skulls it is 3 inches 9 lines wide ; in the younger skull in the College of Surgeons (no. 2975) it is 3 inches 3 lines. The width of the diastema between the cutting-teeth and the front premolar is 2 inches 6 lines in all the specimens. There is a stuffed specimen and a mounted skeleton of a young animal, just showing the horn, in the Free Museum at Liverpool, and the skull of a second of the same age. These two animals died on the voyage from Calcutta to Liverpool, were named R. sondaicus by Mr. Blyth, and preserved by Mr. Moore, the energetic Curator of that Museum. Mr. Blyth informs me there is a skeleton of R. sondaicus in the Anatomical Museum of Guy's Hospital, called R. indicus. The Indian Rhinoceroses are long-lived. Mr. Blyth speaks of a pair that lived about forty-five years in captivity in Barrackpoore park : they were exactly alike in size and general appearance; they never bred ; there is no difference in the horns or form of the skulls in the two sexes (Blyth, J. A. S. B. xxxi. 155). The fcetal skull of R. unicornis (no. 722 D ) in the British M u seum, received from Mr. Bryan Hodgson, is short; the brain-case is oblong, ovate, swollen, and convex behind ; the nasal bones are about as long as they are broad at the hinder edge, transversely convex above in the middle of their length and in the deep central groove in front above ; the nasal cavity is long, high, and wide ; the nasal bones are three-eighths of the entire length to the occipital crest; the lengtb of the skull from the nasal to the front of the orbit is two-fifths of the entire length to the occipital condyles. The intermaxillaries are well developed, rather thick and short; they each bear two blunt teeth, scarcely raised above the alveolus, the first on each side is much larger and thicker than the hinder one, which is small and conical. There are three grinders developed on each side, the second and third being rather more developed than the small front one. There appears to have been a fourth tooth on each %ide more or less developed; but it and the cavity have been lost. The palate is narrow and deeply concave, nearly of equal width, but the sides are less |
