272 BRITISH FOSSIL VERTEBRATA. 
PLEUROSTERNUMDI bullocki (continued)— 
Megasternon kenigit, {J}. E. Gray] Syn. Contents Brit. Mus., 
ed. 44, 1842, p. 108 (name only), and Suppl. Cat. Shield Rept., 
pts i, 1870) pi'77. 
Platemys bullockit, R. Owen, Rep. Brit. Assoc., 1841 (1842), 
p. 164, and Rept. London Clay, pt. i (Pal. Soc., 1849), p. 60, 
pl. xxi; J. Morris, Cat. Brit. Foss., 1854, p. 351. 
Digerrhum bullocki, E. D. Cope, Trans. Amer. Phil. Soc., 
vol. xiv (1870), p. 156. 
Pleurosternon concinnum, R. Owen, Rept. Weald. and Purb. 
Brit. Foss., 1854, p. 352. 
Platemys concinna, G. A. Maack, Palaontographica, vol. xviii 
(1869), p. 288. 
Pleurosternon ovatum, R. Owen, Rept. Weald. and Purb. 
Form., pt. i (Pal. Soc., 1853), p. 8, pl. vii; J. Morris, Cat. 
Brit: Fass., 1854, p. 352; J.C. Mansel-Pleydell, Proc 
Dorset. Nat. Hist. Field Club, vol. vi, 1885, p. 66, pl. iii. 
[Carapace ; Brit. Mus.] 
Platemys ovata, G. A. Maack, Palzontographica, vol. xviii 
(1869), p. 294. 
Pleurosternon emarginatum, R. Owen (fars), Rept. Weald. 
and Purb. Form., pt. i (Pal. Soc., 1853), p. 6, pls. v, vi, and 
Paleontology, ed. 2, 1861, p. 318, woodcut 109; J. Morris 
(pars), Cat. Brit. Foss., 1854, p. 352. [Imperfect shell ; 
Brit. Mus. | 
Loc. Purbeck; Durdlestone Bay and Swanage. [Carapace 
and plastron ; Brit. Mus. ] 
concinnum, Owen. v. Pleurosternum bullocki. 
emarginatum, Owen. v. Hylaochelys emarginata and Pleuro- 
sternum bullocki. 
latiscutatum, Owen. v. Hylzochelys latiscutata. 
ovatum, Owen. v. Pleurosternum bullocki. 
oweni, H. G. Seeley, Index to Aves, etc., Woodwardian Mus., 1869, 
pp. xix, 87. 
Loc. Purbeck ; Swanage. [Carapace ; Woodwardian Mus.] 
portlandicum, R. Lydekker, Cat. Foss. Rept. B. M., pt. iii, 
1889, p. 215, woodcut 47. 
Loc. Portland Stone; Portland. [Plastron and marginals ;. 
Brit. Mus.] 
sedgwicki, H. G. Seeley, Index to Aves, etc., Woodwardian 
Mus., 1869, pp. xix, 86. 
Loc. Purbeck ; Swanage. [Carapace ; Woodwardian Mus.] 
typocardium, H. G. Seeley, 7é7@., pp. xix, 87. 
Loc. Purbeck; Swanage. [Carapace ; Woodwardian Mus.] 
vansittarti, H. G. Seeley, zdzd., pp. xix, 86. 
Loc. Purbeck ; Swanage. [Carapace ; Woodwardian Mus.] 
