REPTILIA. 291 
THAUMATOSAURWUS (continued)— 
megacephalus (Stutchbury), R. Lydekker, Cat. Foss. Rept. 
B. M., pt. ii, 1889, p. 166. 
Plestosaurus megacephalus, S. Stutchbury, Quart. Journ. Geol. 
Soc., vol. ii, 1846, p. 412, pl. xviii ; J. Morris, Cat. Brit. Foss., 
1854, p. 352; W. J. Sollas, Quart. Journ. Geol. Soc., vol. 
xxxvil, 1881, p. 472, woodcuts 8-13. 
Loc. L. Lias ; Somersetshire. [Skeleton ; Bristol Mus.] 
philarchus (Seeley), Lydekker. v. Peloneustes philarchus. 
propinquus (Blake), R. Lydekker, Cat. Foss. Rept. B. M., pt. ii, 
1889, p. 170. 
Plestosaurus propinguus, J. F. Blake, in Tate and Blake, York- 
shire Lias, 1876, p. 247, pl. ii, f. 1. 
Plestosaurus simpsoni, J. F. Blake (errore), zbid. (index of syn- 
onyms, p. I). 
Plesiosaurus macrocephalus ?, A. Carte and W. H. Baily, Journ. 
Roy. Dublin Soc., vol. iv, 1863, p. 169 (table of measurements). 
Loc. M. Lias; Bugbrook. U. Lias ; Crick, Northamptonshire, 
and Whitby. [Skeleton ; Whitby Mus.] 
zetiandicus (Phillips), R. Lydekker, Cat. Foss. Rept. B. M., 
pt. 11, 1889, p. 167. 
Plestosaurus zetlandicus, J. Phillips, Rep. Yorksh. Phil. Soc., 
1852 (1853), p. 7 (name only) (misquoted P. ze¢/an7i on p. 21), 
and zézd., 1853 (1854), p.7 ; A. Carte and W. H. Baily, Journ. 
R. Dublin Soc., vol. iv, 1863, p. 169 (table of measurements); 
J. F. Blake, in Tate and Blake, Yorkshire Lias, 1876, p. 249, 
pl. i, f. 5 (P. zetlandz). 
Loc. U. Lias ; Lofthouse. [Skeleton ; York Mus. ] 
THECODONTOSAURUS, H. Riley and S. Stutchbury, Proc. 
Geol. Soc., vol. ii (1836), p. 398 ; R. Owen, Rep. Brit. Assoc., 
1841 (1842), p. 153. 
antiquus, J. Morris, Cat. Brit. Foss., 1843, p. 211; R. Owen, 
Palzontology, ed. 2, 1861, p. 275; R. Lydekker, Cat. Foss. 
Rept. B. M., pt. 1, 1888, p. 175. 
Thecodontosaurus, H. Riley and S. Stutchbury, Trans. Geol. 
Soc. [2] vol. v (1840), p. 349, pl. xxix, f. 1-3; T. H. Huxley, 
Quart. Journ. Geol. Soc., vol. xxvi, 1870, p. 43, pl. iii, f. 1, 2, 5-8. 
Loc. U. Trias (Dolomitic Conglomerate); Durdham Down, 
Bristol. [Mandib. ramus ; Bristol Mus.] Zz. 
platyodon (Riley and Stutchbury), T. H. Huxley, Quart. Journ. 
Geol. Soc., vol. xxvi, 1870, p. 43; R. Lydekker, Cat. Foss. 
Rept. B. M., pt. i, 1888, p. 174, woodcut 30. 
Paleosaurus platyodon, H. Riley and S. Stutchbury, Proc. Geol. 
Soc., vol. ii (1836), p. 398, and Trans. Geol. Soc. [2] vol. v. 
(1840), p. 352, pl. xxix, f. 5 ; R. Owen, Odontography (1841), 
p. 267, pl. Ixii a, f.7; J. Morris, Cat. Brit. Foss., 1854, p. 351. 
Loc. U. Trias (Dolomitic Conglomerate); Durdham Down, 
Bristol. [Tooth ; Bristol Mus.] 
