NEW MASTODONTS FROM NORTH CHINA

摘要

＜正＞ Four new species of mastodonts, one lorgirostrine trilophodont and three tapiroid or zygolophodont mastodonts are preliminarily described in this paper.The new form Zygolophodon （Turicius） nemonguensis sp. nov. from Inner Mongolia represents the first occurrence of this interesting subgenus or genus in Eastern Asia. Under the new specific name Zygolophodon shansiensis sp. nov. we propose to include a greater part of the published specimens which were identified as "Mastodon borsoni" by the previous writers, and, we think, they are different from the typical Z. borsoni in a number of characters of primary importance.The other two species described here are quite "specialized" forms belonging to the genera Zygolophodon and Gomphotherium respectively. Both are of unusually large size. The generic reference of the latter is still uncertain.A list including all the published species of mastodonts found in China with some revision of nomenclature and distribution are appended. The new materials, especially those of South China, now under the custody of Prof. W. C. Pei and the senior writer of the present paper are not included. They are expected to be published in the near future.