476 FOSSIL VERTEBRATA OF NORTH AMERICA. [BULL, 179. 



EXOSTINUS Cope. Type E. serratus Cope. 



Cope, E. D. 1873 CC, pp. 16, 19. 



1874 B, p. 513. 



1884 O, p. 775. 



Nicholson and Lydekker 1889 A, p. 1140. 

 Zittel, K. A. 1890 A, p. 610. 



Exostinus serratus Cope. 

 Cope, E. D. 1873 CC, p. 16. 



1874 B, p. 514. 



1884 O, p. 776, pi. Ix, figs. 12-14. 

 Oligocene (White River); Colorado. 



VARANID^. 



Cope, E. D. 1864 A, p. 227. 

 Baur, G. 1890 A, p. 292. 

 Beddard, F. E. 1888 A. 

 Bonlenger, G. A. 1884 A, p. 122. 



1885 A, p. 303. 



1891 A, p. 117. 

 Cope, E. D. 1878 G, p. 305. 



1900 A, p. 470. 



Dollo, L. 1893 C, p. 252. 



Furbringer, M. 1900 A. 



Gadow, H. 1898 A, p. 26. 



Hoffmann, C. K. 1900 B, p. 1068. (Monitoridae.) 



Lydekker, R. 1888 B, p. 281. 



Parker, W. K. 1868 A, p. 116. (Monitor,) 



Stannius, H. 1856 A. (Varani.) 



Zittel, K. A. 1890 A, p. 608. 



THINOSAURUS Marsh. Type T. paucidens Marsh. 



Marsh, 0. C. 1872 K, p. 299. 

 Boulenger, G. A. 1891 A, p. 115. 

 Hoffmann, C. K. 1890 B, p. 1324. 

 Zittel, K. A. 1890 A, p. 609. 



Thinosaurus agilis Marsh. 

 Marsh, 0. C. 1872 K, p. 302. 



Eocene (Bridger); Wyoming. 



Thinosaurus crassus Marsh. 

 Marsh, 0. C. 1892 K, p. 301. 



Eocene (Bridger); Wyoming. 



Thinosaurus grandis Marsh. 

 Marsh, O. C. 1872 K, p. 301. 



Eocene (Bridger); Wyoming. 



Thinosaurus leptodus Marsh. 



Marsh, 0. C. 1872 K, p. 300. 

 Cope, E. D. 1873 E, p. 632. 

 King, C. 1878 A, p. 405. 



Eocene (Bridger); Wyoming. 



Thinosaurus paucidens Marsh. 

 Marsh, 0. C. 1872 K, p. 299. 



Eocene (Bridger); Wyoming. 



TINOSAURUS Marsh. Type T. stenodon Marsh. 



Marsh, O. C. 1872 K, p. 304. 

 Zittel, K. A. 1890 A, p. 609. 



The position of this genus is uncertain. 



Tinosaurus lepidus Marsh. 



Marsh, O. C. 1872 K, p. 308. 



Eocene (Bridger); Wyoming. 



Tinosaurus stenodon Marsh. 



Marsh, O. C. 1872 K, p. 304. 



Eocene (Bridger); Wyoming. 



Gray, J. E., 1825, Philos. Mag. (2), x. 



Baur, G. 1893 C. (Amphisbsenidae; Hypsorhini- 



d ffi .) 

 Boulenger, G. A. 1884 A. 



1885 A, p. 430. 

 Cope, E. D. 1864 A, p. 226. (Amphisbsenia.) 



1871 B. 



1900 A, p. 682. 



Furbringer, M. 1900 A, pp. 258, 539, 616, 622. ( Am- 

 phisbaenia; Amphisbaenidse.) 



Gadow, 1898 A, p. 27. 



Gervais, P. 1853 A, p. 293. (" Amphisbenes." ) 



Haeckel, E. 1895 A, p. 349. (Glyptoderma.) 



Hoffmann, C. K. 1890 B, p. 1288. 



Miiller, 3. 1831 A, p. 253. (Amphisbsenoidea). 



Owen, R. 1845 B, p. 334. (A-nphisbsense.) 



Parker, W. K. 1868 A, p. 95. (Amphisbense.) 



Stannius, H. 1856 A. (Amphisbfenoida.) 



RHINEURA Cope. Type R. floridana Cope. 



Cope, E. D., 1861, Proc. Acad. Nat. Sci. Phila., p. 75. 

 Boulenger, G. A. 1885 A, p. 459. 

 Cope, E. D. 1900 A, p. 684. 

 Furbringer, M. 1900 A, p. 265. 



Rhineura hatcherii Banr. 

 Baur, G. 1893 C. 



Oligocene (White River); South Dakota. 



