290 BRITISH FOSSIL VERTEBRATA. 
THALASSOCHELYS, L. J. Fitzinger, Ann. Wien. Mus., vol. i, 
1835, p. 121. 
crassicostata (Owen), Cope. v. Lytoloma crassicostatum. 
eoczenica, R. Lydekker, Proc. Geol. Assoc., vol. xi (1889), p. 177, 
woodcut 1, and Cat. Foss. Rept. B. M., pt. iii, 1889, p. 50. 
Loc. Bracklesham Beds. [Humerus ; J. B. Ogle Coll.] 
planimentum (Owen), Cope. v. Lytoloma planimentum: 
sp., R. Lydekker, Proc. Geol. Assoc., vol. xi (1889), p. 178, and Cat. 
Foss. Rept. B. M., pt. iii, 1889, p. 50. 
Loc. London Clay; Sheppey. [Mandib. symphysis; Brit. Mus., 
no. 38995.] 
THAUMATOSAURUWS, H. von Meyer, Neues Jahrb., 1841, 
p. 176. 
RHOMALEOSAURUS, H. G. Seeley, Quart. Journ. Geol. Soc., 
vol. xxx, 1874, p. 448. 
arcuatus (Owen), R. Lydekker, Cat. Foss. Rept. B. M., pt. ii, 
1889, p. 163. 
Plestosaurus arcuatus, R. Owen, Rep. Brit. Assoc., 1839 (1840), 
p. 75, and Trans. Geol. Soc. [2] vol. v (1840), p. 521, pl. xliv, 
f. 5 (vertebra) ; J. Morris, Cat. Brit. Foss., 1854, p. 352. 
Plesiosaurus, W. Buckland, Geol. and Mineral., ed. 2, vol. ii, 
1837; P30; pl. xix, £3, 4 
Plesiosaurus tritarsostinus, T. Hawkins, Mem. Ichthyosauri, 
1834, pl. xxvi, and Sea Dragons, 1840, list of plates, 
pl. xxvi. 
Loc. L. Lias; Bath, Cheltenham, Lyme Regis, and Street. 
[Dentary and other bones ; Brit. Mus.] 
carinatus (Cuvier), R. Lydekker, Cat. Foss. Rept. B. M., pt. ii, 
1889, p. 168, woodcut 57. 
Plestosaurus carinatus, Cuvier, Ossem. Fossiles, ed. 2, vol. v, 
pt. li, 1824, p. 486; H. E. Sauvage, Ann. Sci. Nat. (Zool.) 
[6] vol. viii, 1879, art. 13, p. 19, pl. xxvi, f. 2. 
Loc. Kim. Clay ; Shotover, Portland, and Swindon. [Vertebre; 
Brit. Mus.| 
cramptoni (Carte and Baily), R. Lydekker, Cat. Foss. Rept. 
B. M., pt. ii, 1889, p. 161. 
Plestosaurus cramptoni, A. Carte and W. H. Baily, Rep. Brit. 
Assoc., 1862 (1863), Sect., p. 68, and Journ. Roy. Dublin Soc., 
vol. iv, 1863, p. 160, pls. 1,11; S. Haughton, Man. Geology, 
1865, p. 273, woodcut 38; H. G. Seeley, Ann. Mag. Nat. 
Hist. [3] vol. xv, 1865, p. 50. 
Rhomaleosaurus cramptoni, H. G. Seeley, Quart. Journ. Geol. 
Soc., vol. xxx, 1874, p. 448. 
Loc. U. Lias; Kettleness, Kingsthorpe, and Whitby. [Skeleton ; 
Mus. Science and Art, Dublin.] 
