270 BRITISH FOSSIL VERTEBRATA. 
PLESIOSAURUS (continued)— 
pectopleuron, R. Owen, Cat. Foss. Rept. Mus. Roy. Coll. 
Surgeons, 1854, p. 62. 
Loc. ‘Oolitic Clay; Foxcombe Hill’ [Vertebree; Mus. R. 
Coll. Surgeons. ] 
pentatarsostinus, Hawkins. v. Plesiosaurus hawkinsi. 
philarchus, Seeley. v. Peloneustes philarchus. 
phillipsi, Sauvage. v. Cimoliosaurus portlandicus. 
planus, Owen. v. Cimoliosaurus planus. 
platydeirus, H. G. Seeley, Index to Aves, etc., Woodwardian 
Mus., 1869, pp. xvili, 41 (name only). [Voz Owen, 
v. Addenda. ] 
Loc. Cambridge Greensand. [Vertebre ; Woodwardian Mus.] 
plicatus, Mansel-Pleydell. vw. Cimoliosaurus richardsoni. 
plicatus, Phillips. v. Cimoliosaurus plicatus and C. truncatus. 
plicatus, Sauvage. v. Cimoliosaurus truncatus. 
pecilospondylus, H. G. Seeley, Index to Aves, etc., Wood- 
wardian Mus., 1869, pp. xviil, 48 (name only). 
Loc. Cambridge Greensand. [Vertebre ; Woodwardian Mus. ] 
priscus, J. Parkinson, Introduction, 1822, p. 294. [A general 
undefined term applied to all the Plesiosaurian remains 
described in Conybeare’s original memoir on the genus. | 
propinquus, Blake. v. Thaumatosaurus propinquus. 
recentior, J. Parkinson, Introduction, 1822, p. 295. [An unde- 
fined specific name applied to miscellaneous remains from 
the Kimeridge Clay of Weymouth and Headington, near 
Oxford : ? = Pliosaurus brachyspondylus.| 
rostratus, R. Owen, Rept. Liassic Form., pt. i (Pal. Soc., 1865), 
p. 20, pls. ix—xii (#o# pl. xiil) ; emend. R. Lydekker, Cat. 
Foss. Rept. B. M., pt. ii, 1889, p. 271, woodcut 81. [See 
also Plestosaurus conybearet. | 
Loc. L. Lias ; Lyme Regis. [Skeleton ; Brit. Mus.] 
rugosus, Owen. v. Eretmosaurus rugosus. 
rugosus, Blake (zon Owen). wv. Eretmosaurus macropterus. 
simpsoni, Blake. v. Thaumatosaurus propinquus. 
smithi, Owen. v. Cimoliosaurus smithi. 
sterrodeirus, Seeley. v. Peloneustes equalis. 
subconcavus, R. Owen, Cat. Foss. Rept. Mus. Roy. Coll. 
Surgeons, 1854, p. 61. 
Loc. Lias; Somerset. [Vertebrae ; Mus. Roy. Coll. Surgeons.] 
subdepressus, Owen. v. Cimoliosaurus truncatus. 
subplanus, R. Owen, zz, p. 61. 
Loc. ‘Oolitic Clay ; Oxfordshire.’ [Vertebrze ; Mus. R. Coll. Surg.] 
subtrigonus, R. Owen, Rep. Brit. Assoc., 1839 (1840), p. 773 
J. Morris, Cat. Brit. Foss., 1854, p. 352. 
Loc. L. Lias; Weston. [Vertebrz ; Bristol Mus.] 
tessarestarsostinus, T. Hawkins, Mem. Ichthyosauri, 1834, 
p. 40 (undefined). 
