REPTILIA. 275 
PLIOSAURUS (continued)— 
trochanterius, Owen. v. Cimoliosaurus trochanterius and 
Machimosaurus mose. 
sp., R. Owen, Rep. Brit. Assoc., 1841 (1842), p.64; J. Morris, Cat. 
Brit. Foss., 1854, p. 352. 
Loc. Speeton Clay ; Speeton. [Humerus; York Mus.] 
PODOCNEMIS, J. Wagler, Syst. Amphib., 1830, p. 135. 
bowerbanki (Owen), E. D. Cope, Trans. Amer. Phil. Soc., 
vol. xiv (1870), p. 156; R. Lydekker, Cat. Foss. Rept. B. M., 
pt. ili, 1889, p. 171. 
Platemys bowerbanki, [-ii] R. Owen, Rep. Brit. Assoc., 1841 
(1842), p. 163, and Rept. London Clay, pt. i (Pal. Soc., 1849), 
p. 66, pl. xxiil (#o# pl. xxix, f. 1, 2); J. Morris, Cat. Brit. 
Foss., 1854, p. 351. 
Em) s /evis, T. Bell, in R. Owen, Rept. London Clay, pt. i (Pal. 
Soc., 1849), p. 70, pl. xxii; J. Morris, Cat. Brit. Foss., 1854, 
p. 349. [Imperfect shell; Brit. Mus.] 
Podocnemtis levis, E. D. Cope, Trans. Amer. Phil. Soc., vol. xiv 
(1870), p. 156. 
Peltocephalus levis, L. Riitimeyer, Neue Denkschr. schweiz. 
Ges. Nat., vol. xxv, 1873, p. 159. 
Loc. London Clay; Sheppey. [Imperfect shell ; o/im J. S. 
Bowerbank Coll.]} 
? delabechei (Bell), R. Lydekker and G. A. Boulenger, Geol. Mag- 
[3] vol. iv, 1887, p. 274. [? Dacochelys.] 
Emys delabechit, T. Bell, in R. Owen, Rept. London Clay, pt. i 
(Pal. Soc., 1849), p. 74, pl. xxviii ; J. Morris, Cat. Brit. Foss., 
1854, p. 349. 
Emys conybearit, R. Owen, Rept. London Clay, pt. i, Suppl. i 
(Pal. Soc., 1858), p. 77, pls. xiii, xiv (numbered and quoted 
aS Xxvill A, xxviliB). [Imperfect shell; Brit. Mus.] 
Dacochelys delabechet (? Bell), R. Lydekker, Cat. Foss. Rept. 
B. M., pt. iil, 1889, p. 173. 
Loc. London Clay ; Sheppey. [Imperfect shell ; Mus. Pract. Geol.] 
leevis, Cope. v. Podocnemis bowerbanki. 
PQKILOPLEURON, Deslongchamps.  v. Aristosuchus and 
Megalosaurus. 
| bucklandi, Deslongchamps. v. Megalosaurus bucklandi and 
M. oweni. 
pusillus, Owen. v. Aristosuchus pusillus. 
POLACANTHUS, R. Owen, in W. Fox, Rep. Brit. Assoc., 1865 
(1866), Sect., p. 56; J. W. Hulke, Phil. Trans., 1881, p. 653. 
foxi, J. W. Hulke, zd7d., p. 653, pls. Ixx-Ixxvi, and z#d., 1887, pt. B, 
p. 169, pls. viii, ix; R. Lydekker, Cat. Foss. Rept. B. M., 
pt. i, 1888, p. 189. 
Loc. Wealden ; Barnes Chine, I. of Wight. [Dermal armour 
and associated vertebre ; Brit. Mus.] T. 
