268 BRITISH FOSSIL VERTEBRATA. 
PLESIOSAURUS (continucd)— 
gardneri (Seeley), Whidborne. wv. Cimoliosaurus constrictus. 
giganteus, Conybeare. v. Pliosaurus brachydeirus. 
grandis, R. Owen, Rep. Brit. Assoc., 1839 (1840), p. 83. A name 
applied to a propodial bone from the Kimeridge Clay, 
subsequently (2é¢¢., 1841 (1842), p. 64), assigned to Plzo- 
saurus. v. Pliosaurus macromerus. 
hawkinsi, [-ii] R. Owen, Rep. Brit. Assoc., 1839 (1840), p. 57, and 
Trans. Geol. Soc. [2] vol. v (1838), p. 515, pl. xliul, pl. xliv, 
f. 4, pl. xlv, and Odontography (1841), p. 281, pl. Ixxiv, and 
Rept. Liassic Form., pt. i (Pal. Soc., 1865), p. 11, pl. xiv, f. 6, 
pl. xvi; G. A. Mantell, Petrifactions, 1851, pp. 340, 347, 
woodcut 73; J. Morris, Cat. Brit. Foss., 1854, p. 352; H. G 
Seeley, Ann. Mag. Nat. Hist. [3] vol. xv, 1865, pp. 50, 233; 
R. Lydekker, Cat. Foss. Rept. B. M., pt. ii, 1889, p. 260, 
woodcuts 77, 79, 80. 
Plestosaurus etheridget, [-ii] T. H. Huxley, Quart. Journ. Geol. 
Soc., vol. xiv, 1858, p. 281; [-ii] H. G. Seeley, Ann. Mag. 
Nat. Hist. [3] vol. xv, 1865, pp. 50, 233. [Skeleton ; Mus. 
Pract. Geol. ] 
Plestosaurus dolichodeirus, W. Buckland (errore), Geol. and 
Mineral., 1837, pl. xvii, pl. xviii, f. 3; J. W. Hulke, Proc. 
Geol. Soc., vol. xxxix, 1883, p. 59, woodcut 15. 
? Plestosaurus hexatarsostinus, T. Hawkins, Great Sea Dragons, 
1840, pl. xxviii. [Skeleton ; Brit. Mus.] 
? Plestosaurus pentatarsostinus, T. Hawkins, zéid., pl. xxvii. 
[Skeleton ; Brit. Mus. ] 
Plestosaurus triatarsostinus, T, Hawkins, zbid., pls. xxiv, xxv 
(P. tritarsostinus), and Mem. Ichthyosauri, 1834, pl. xxiv, xxv. 
[Skeleton ; Brit. Mus. ] 
Loc. L. Lias ; Bennington, Leicestershire ; Street and Walton. 
[Skeleton ; Brit. Mus. ] 
hexagonalis, Phillips. v. Cimoliosaurus plicatus. 
hexatarsostinus, Hawkins. v. Plesiosaurus hawkinsi. 
homalospondylus, R. Owen, Rept. Liassic Form., pt. i (Pal. 
Soc., 1865), p. 12, pls. v-vili ; H. G. Seeley, Ann. Mag. Nat. 
Hist. [3] vol. xv, 1865, pp. 52, 232; J. F. Blake, in Tate and 
Blake, Yorkshire Lias, 1876, p. 246; R. Lydekker, Cat. 
Foss. Rept. B. M., pt. ii, 1889, p. 253, woodcut 78. 
Loc. U. Lias ; Whitby. [Skeleton ; Brit. Mus.] 
homei, Gray. v. Plesiosaurus dolichodeirus. 
ichthyospondylus, Seeley. v. Cimoliosaurus bernardi. 
infraplanus, Phillips. wv. Cimoliosaurus plicatus, 
laticeps, Owen. v. Plesiosaurus conybearei. 
latispinus, Owen. v. Cimoliosaurus latispinus. 
leedsi (Seeley), Whidborne. vw. Cimoliosaurus plicatus. 
leptopleuron, R. Owen, Cat. Foss. Rept. Mus. Roy. Coll. 
Surgeons, 1854, p. 60. 
Loc. Unknown. [Cervical vertebrae; Mus. R. Coll. Surgeons.] 
