PLATE XVII. 
Fig. Page 
1. Tetragonopterus avus^ A. S. TVoodw.; right lateral aspect. 
—Tertiary Lignite ; Taubate, San Pauio, Brazil. 
[P. 9222.] 298 
2. Tetragonopterus lignitiais, A. S. Woodw.: right lateral 
aspect.-—Ibid. [P. 9012.] 299 
3. Ditto; left lateral aspect.—Ibid. [P. 9226.] 299 
4. Arius iheringi, A. S. Woodw.; skull, superior aspect.— 
Ibid. [P. 9220.] 334 
5. Percichthys antiquus, A. S. Woodw.; dorsal portion of 
trunk, right lateral aspect.—Ibid. [P. 9011.] 
514 
