334 



FOSSIL VERTEBEATA OF NOETH AMEEICA. 



Xystracanthus anceps (Newb. and 



Worth.)- 

 Newberry and Worthen 1866 A, p. 122, pi. xii, fig. 



8. ( Drepanaeanthus. ) 

 Lesley, J. P. 1890 A, p. 1262, figure. 

 St. John and Wortheii 1875 A, p. 468. ( Xystraean- 



thus.) 



Woodward, A. S. 1891 A, p. 131. (Physonemus.) 

 Coal-measures; Illinois. 



Xystracanthus arcuatus Leidy. 

 Leidy, J. 1859 C, p. 3. 



1873 B, pp. 312, 353, pi. xvii, fig. 25. 

 St. John and Worthen 1875 A, p. 457. 

 Woodward, A. S. 1891 A, p. 131. (Physonemus.) 



Coal Measures; Kansas. 

 Xystracanthus gemmatus ( Newb. and 



Worth.). 

 Newberry and Worthenl866 A, p. 123, pi. xiii, fig. 1. 



( Drepanaeanthus. ) 



Woodward, A. S. 1891 A, p. 132. (Physonemus.) 

 Subcarboniferous (Keokuk); Iowa. 



Xystracanthus mirabilis St. J. and 



Worth. 



St. John and Worthen 1875 A, p. 458, pi. xx, fig. 1. 

 Lesley, J. P. 1890 A, p. 1264, figure. 



1895 A, pi. dlxxii. 



Woodward, A. S. 1891 A, p. 132. ( Physonemus. ) 

 Coal-measures; Illinois. 



Xystracanthus reversus (St. J. and 

 Worth.). 



St. John and Worthen 1875 A, p. 456, pi. xix, figs. 

 5, 6. (Drepanaeanthus.) 



Keyes, C. R. 1894 A, p. 237. (Drepanaeanthus.) 



St. John and Worthen 1883 A, p. 253, pi. xxiv, fig. 5. 

 ( Drepanaeanthus. ) 



Woodward, A. S. 1891 A, p. 132. (Physonemus.) 

 Subcarboniferous (St. Louis); Illinois, Mis- 

 souri. 



BATACANTHUS St. John and Worthen. Type B. baculiformix St. J. and Worth. 



St. John and Worthen 1875 A, p. 468. 

 Miller, S. A. 1889 A, p. 588. 

 Woodward, A. S. 1891 A, p. 132. 



Batacanthus baculiformis St. J. and 



Worth. 

 St. John and Worthen 1875 A, p. 469, pi. xxi, figs. 



4-8. 



Keyes, C. R. 1894 A, p. 238. 

 Woodward, A. S. 1891 A, p. 133. 



Subcarboniferous (Keokuk); Iowa, Missouri, 

 Illinois. 



Batacanthus ? necis St. J. and Worth. 

 St. John and Worthen 1883 A, p. 253, pi. xxv, fig. 4. 



Woodward, A. S. 1891 A, p. 133. 



Subcarboniferous (Keokuk); Iowa. 



Batacanthus stellatus (Newb. and 

 Worth.). 



Newberry and Worthen 1866 A, p. 125, pi. xii, fig. 7. 

 ( Drepanaeanthus ?) 



Hambach, G. 1890 A, p. 80. 



St. John and Worthen 1875 A, p. 470, pi. xxi, 

 figs. 1-3. 



Woodward, A. S. 1891 A, p. 133. 



Subcarboniferous (Keokuk); Illinois, Mis- 

 souri (fide Hambach). 



ORAOANTHUS Agassiz. Type 0. milleri Agassiz. 



Agassis, L. 1843 B (1837), iii, p. 13. 



1844 A. 



American Geologist 1888 A. 

 Davis, J. W. 1883 A, p. 525 (Oracanthus) ; p. 533 



(Phoderacanthus). 

 Leidy, J. 1856 S, p. 161. 

 McCoy, F. 1855 A, p. 634. 

 Miller, S. A. 1889 A, p. 603 (Oracanthus); p. 607 



( Pnigeacanthus) . 

 Newberry, J. S. 1889 A, p. 34. 



1890 A. 



1897 A, p. 285. 



Newberry and Worthen 1866 A, p. 122. 

 Nicholson and Lydekker 1889 A, p. 947. 

 Pictet, P. J. 1854 A, p. 284. 



St. John and Worthen 1875 A, p. 480. ( Pnigeacan- 

 thus; type Oracanthus pnigeus.) 

 Traquair, R. H. 1888 A, p. 85. 

 Woodward, A. S. 1891 A, p. 135. 

 Zittel, K. A. 1890 A, p. 162. 



Oracanthus lineatus Newb. 



Newberry, J. S. 1897 A, p. 290. 



Subcarboniferous (St. Louis); Indiana. 



Oracanthus multiseriatus Newb. 

 Newberry, J. S. 1857 C, p. 126. 

 Miller, S. A. 1889 A, p. 603. 

 Subcarboniferous; Ohio. 



Oracanthus ? obliquus St. J. and 



Worth. 

 St. John and Worthen 1875 A, p. 477, pi. xxii, fig. 



16. 



Lesley, J. P. 1889 A, p. 501, figures. 

 Woodward, A. S. 1891 A, p. 139. 



Subcarboniferous (Keokuk); Illinois. 



Oracanthus pnigeus Newb. and Worth. 

 Newberry and Worthen IMS A, p. 117, pi. xii, fig. 3. 

 Lesley, J. P. 1889 A, p. 724, fig. 

 Miller, S. A. 1889 A, p. 607. (Pnigeacanthus.) 

 Newberry, J. S. 1897 A, p. 286. 

 St. John and Worthen 1875 A, p. 480. (Pnigeacan- 

 thus deltoides.) 



1883 A, p. 260. (Pnigeacanthus pnigeus). 

 Woodward, A. S. 1891 A, p. 138. 



Subcarboniferous (Keokuk); Iowa. 



