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Show 232 MR. 0LDFIELD THOMAS UN A NEW FORM OF BEAR. [Mar. 20, Teeth peculiarly short and broad in outline. P4 very broad and heavy, nearly as broad as long, with low cusps and a low broad internal lobe. M1 rather shorter, and yet actually broader, than in the type of yesoensis. Lower teeth similarly broader throughout, the last molar quite unusually broad and square in shape, not narrowing behind (see text-fig. 59 b). Text-fig. 59. a, skull, and 6, last lower molar of Ursus arctos shanorum. Dimensions of the typical skull:- Basal length 295 mm.; zygomatic breadth 162 ; length of nasals 82; interorbital breadth 59; breadth across postorbital processes 87 ; intertemporal breadth 62 ; breadth of brain-case 95 ; mastoid breadth 141; palate length 169. Teeth: p4 17x15; m1 22x18; m2 36x19; p4 14x7; m, 23 Xll'5; m2 25x16-5; m3 20x17*5. Hab. Shan States. Type. Subadult male. B.M. no. 6.3.16.1. This Bear differed from the Hokkaido Bear, which appeared to be its nearest ally, by its much smaller size and by the marked differences in the shape of the teeth above detailed. By the kindness of the Trustees of the Indian Museum, the typical specimen of this interesting Bear had been ceded in exchange to the British Museum. |