CATALOGUE. 



271 



St. John and Worthen 1875 A. p. 282, pi. i, figs. (v-6c 



(var. robustus). 

 Woodward, A. S. 1889 D, p. 27 (L. calceolus and 



L. robustus). 

 Subcarboniferous (Burlington) ; Iowa, Illinois: 



(Keokuk); Illinois, Missouri, Iowa. 



Lambdodus costatus St. J. and Worth. 



St. John and Worthen 1875 A, p. 280, pi. v, fig. 3. 



Keyes, C. R. 1894 A, p. 229. 



Miller, S. A. 1889 A, p. 600, fig. 1140. 



Subcarboniferous (Burlington, Keokuk); 

 Iowa, Illinois, Missouri. 



Lambdodus hamulus St. J. and Worth. 



St. John and Worthen 1875 A, p. 283, pi. v, figs. 26a- 



26c. (L. hamatus, on explanation of plate.) 



Woodward, A. S. 1889 D, p. 27. 



Subcarboniferous (Chester); Illinois. 



Lambdodus reflexus St. J. and Worth. 



St. John and Worthen 1875 A, p. 284, pi. v, figs. 25, 



25a. 

 Woodward, A. S. 1889 D, p. 27. 



Subcarboniferous (Chester); Illinois. 



Lambdodus transversus St. J. and 

 Worth. 



St. John and Worthen 1875 A, p. 282, pi. v, figs. 4a, 46. 

 Woodward, A. S. 1889 D, p. 27. 



Subcarboniferous (St. Louis); Illinois. 



CARCHAROPSIS Agassiz. Type G. prototypm A^gassiz= Pristicladodus dentatus McCoy. 



Agassis, L. 1843 B, ili, p. 313. (Definition in foot- 

 note.) 



Davis, J. W. 1883 A, p. 381; p. 384. (Pristicladodus. ) 



Eichwald, E. 1860 A, p. 1604. (Dicrenodus.) 



Giinther, A. 1880 A, p. 319. 



Hasse, C. 1878 A, p. 168. (Pristicladodus.) 



McCoy, F. 1855 A, p. 642. 



Miller, S. A. 1889 A, p. 589 (Carcharopsis); p. 608. 

 (Pristicladodus). 



1892 A, p. 714. (Dicrenodus. ) 



Nicholson and Lydekker 1889 A, p. 944 (Carchar- 

 opsis); 928 (Dicrenodus). 



Pirtet, F. J. 1854 A, p. 239. 



Romanovsky, G. 1853 A, p. 408, pi. viii. (Dicren- 

 odus, type D. okensis.) 



St. John and Worthen 1875 A, p. 253 (Pristiclado- 

 dus); p. 254 (Carcharopsis). 



Woodward, A. S. 1886 A, p. 268. 

 1889 D, p. 28. (Dicrenodus.) 



Woodward and Sherborn 1890 A, p. 63. (Dicren- 

 odus.) 



Zittel, K. A. 1890 A, p. 81 (Carcharopsis); p. 66 

 (Pristicladodus). 



Carcharopsis wortheni Newb. 



Newberry and Worthen 1866 A, p. 69, pi. iv, figs. 14 



14o. 



Dana, J. D. 18% A., p. 644, fig. 1020. 

 Davis, J. W. 1883 A, p. 383. (Pristicladodus.) 

 Miller, S. A. 1889 A, p. 589, fig. 1106. 

 St. John and Worthen 1875 A, p. 255. 

 Woodward, A. S. 1889 D, p. 29. (Dicrenodus.) 

 Subcarboniferous; Alabama. 



HYBOCLADODUS St. J. and Worth. Type H. plicatilis St. J. and AVorth. 



St. John and Worthen 1875 A, p. 284. 

 Miller, S. A. 1889 A, p. 600. 

 Nicholson and Lydekker 1889 A, p. 928. 

 Woodward, A. S. 1889 D, p. 29. 



Hybocladodus compressus ( Newb. and 



Worth). 

 Newberry and Worthen 1866 A, p. 78, pi. v, fig. 1. 



(Helodus.)i 



St. John and Worthen 1875 A, p. 287, pi. v. fig. 8. 

 Woodward, A. S. 1889 D, p. 29. 



Subcarboniferous (Burlington) ; Iowa. 



Hybocladodus intermedius St. J. and 



Worth. 



.St. John and Worthen 1875 A, p. 287, pi. v, fig. 11. 

 Woodward, A. S. 1889 D, p. 29. 



Subcarboniferous (Keokuk); Iowa, Illinois. 



Hybocladodus nitidus St. J. and 

 Worth. 



St. John and Worthen 1875 A, p. 288, pi. v, fig. 7. 

 Woodward, A. S. 1889 D, p. 29. 



Subcarboniferous (Chester); Illinois. 



Hybocladodus plicatilis St. J. and 



Worth. 



St. John and Worthen 1875 A, p. 286, pi. v, fig. 9 

 Miller, S. A. 1889 A, p. 600. 

 Woodward, A. S. 1889 D, p. 30. 



Subcarboniferous (Burlington); Iowa. 



Hybocladodus tenuicostatus St. J. 



and Worth. 



St. John and Worthen 1875 A, p. 286, pi. v, fig. 10. 

 Woodward, A. S. 1889 D, p. 30. 



Subcarboniferous (Keokuk); Illinois, Iowa. 



SYMMORIUM Cope. Type S. reniforme Cope. 



Cope, E. D. 1893 L. 

 1894 F, p. 427. 



Symmorium reniforme Cope. 

 Cope, E. D. 



Brown, C. 1900 A, p. 171, fig. 6c. 

 Cope, E. D. 1894 F, p. 427, pi. xviii, figs. 1-5. 

 Coal-measures; Illinois. 



1 Not H. compreesus Newberry and Worthen 1870 A, p. 360. 



