140 BRITISH FOSSIL VERTEBRATA. 
PACHYRHIZODWUS (continued)— 
glyphodus, C. C. Blake and S. J. Mackie, Geologist, vol. vi, 
1863, p. 134. 
Loc. Gault; Folkestone. [Fragment of jaw; Brit. Mus.] 
gracilis (Owen), A. S. Woodward (er W. Davies and O. C. 
Marsh, MS.), Proc. Geol. Assoc., vol. x (1888), p. 314. 
Mosasaurus gracilis, R. Owen, in F. Dixon, Geol. Sussex, 1850, 
p- 380, ‘ph. xxxvily f. 1, and. Rept. Cret. Form, (Pal, ae, 
1851), p. 31, pl. ix, f. 1. [For other figures see REPTILIA. ] 
Loc. Chalk ; Sussex. [Jaws ; Brighton Mus.] 
subulidens (Owen), A. S. Woodward, Ann. Mag. Nat. Hist. [6] 
vol. iv, 1889, p. 350. 
Rhaphiosaurus subulidens, R. Owen, Rep. Brit. Assoc., 1841, 
p. 190, and Rept. Cret. Form. (Pal. Soc., 1851), p. 19, pl. x, 
f: 5,/6: TT. (Rhaphiosaurus.) 
Rhaphiosaurus lucius, R. Owen, in F. Dixon, Geol. Sussex, 
1850, p. 385, pl. xxxix, f. 1-3. 
Loc. L. Chalk; Cambridge. Chalk; Sussex. [Mandib. ramus; 
Woodwardian Mus. ] 
PALZZONISCUS, H. D. de Blainville, Dict. Hist. Nat., vol. xxvii, 
1818, p. 320 (Pal@oniscum); L. Agassiz, Poiss. Foss., vol. ii, 
pt. 1 (1834), p. 41. 
PALZOTHRISSUM, H. D. de Blainville, Dict. Hist. Nat., vol. 
xxvii, 1818, p. 320. 
abbsi, Kirkby. v. Acentrophorus abbsi. 
altus, Kirkby. v. Acentrophorus altus. 
? angustus, L. Agassiz, Poiss. Foss., vol. ii, pt. i (1834), p. 57, 
pl. ix, f. 1-5. Doubtfully recorded from Permian of 
Fulwell by J. W. Kirkby, Quart. Journ. Geol. Soc., vol. xx, 
1864, p. 356. [?not Pa/@ontscus, according to Traquair, 
Quart. Journ. Geol. Soc., vol. xxxiil, 1877, p. 558.} 
carinatus, Agassiz. wv. Rhadinichthys carinatus. 
catopterus, Agassiz. wv. Dictyopyge catoptera. 
comptus, L. Agassiz, Poiss. Foss., vol. ii, pt. i (1835), p. 97, 
pl. x4, f. 1-3 (P. comtus) ; W. King, Permian Foss. (Pal. 
Soc., 1850), p. 223, pl. xxi, f. 1; W. C. Willfanmisen; Pom 
Trans., 1849, p. 445, pl. xl, f. 7; J. Morris, Cat. Brit. Foss., 
1854, p. 336. 
Paleothrissum magnum and P. macrocephalum, A. Sedgwick, 
Trans. Geol: Soc. [2] vol. iii (1829), p: 117, plevill,®. 1, 2, 
pl. ix, f.-2: 
Palaoniscus freieslebent, F. M‘Coy (? on Blainville), Brit. 
Palzeoz. Foss. (1855), p. 606; R. Howse, Guide Coll. Local 
Foss. Mus. Nat. Hist. Soc. Newcastle-upon-Tyne, 1889, 
pp. 21, 24. 
Loc. Marl-Slate; Midderidge and Cullercoats. L. Magnesian 
Limest.; Down Hill, near Boldon. [Fishes.] 
