J.P. Mogan had paid $32000 for the Dames Mastodon and collection. As they had before a fair Mastodon one concludes why Ostom recommended to Mogan the purchase of this collection at such an extravagant price. Blataniis J.A. and W. Africa. Thoroughly his ancestry gives rise to tortless his life on Gondwana. These fresh-water molluscs have had an independent origin. These fresh water shells show undoubted connec- tion between western Africa and Brazil.