PISCES. 137 
OXYGNATHUS, P. M. G. Egerton, Ann. Mag. Nat. Hist. [2] 
vol. xiii, 1854, p. 435, and Figs. and Descript. Brit. Organic 
Remains, dec. viii (Mem. Geol. Surv., 1855), no. 9. 
ornatus, P. M. G. Egerton, zé7d., pls. ix, ix*; J. Morris, Cat. Brit. 
Foss., 1854, p. 3306. 
Loc. L. Lias; Lyme Regis. [Fishes ; Brit Mus.] T. 
OXYGONTIUS, L. Agassiz, in P. B. Brodie’s Foss. Insects, 1845, 
p. 16. 
tenuis, L. Agassiz, 747d, p. 16, pl. i, f. 4; J. Morris, Cat. Brit. 
Foss., 1854, p. 339. 
Loc. Purbeck; Vale of Wardour. [Fish ; P. B. Brodie Coll.] 
T. 
OXYRHINA, L. Agassiz, Poiss. Foss., vol. iii (1838), p. 86. 
angustidens, A. E. Reuss, Verstein. bohm. Kreideform., pt. 1 
(1845), p. 6, pl. il, f. 7-13; A. S. Woodward, Cat. Foss. 
Fishes B. M., pt. i, 1889, p. 380. 
Loc. U. Greensand ; Wiltshire. Chalk; Sussex, Surrey, Kent, 
and Cambridgeshire. [Zeeth; Brit. Mus.] 
crassidens, F. Dixon, Geol. Sussex, 1850, p. 367, pl. xxxi, f. 13; 
J. Morris, Cat. Brit. Foss., 1854, p. 336; A. S. Woodward, 
Cat. Foss. Fishes Bb. M., pt. 1, 1889, p. 382. 
Oxyrhina mantelli, L. Agassiz (errore), Poiss. Foss., vol. iii 
(1843), pl. xxxiii, f. 6. [Tooth ; Brit. Mus.] 
Loc. Chalk ; Sussex. [Tooth; Brit. Mus.] 
hastalis, L. Agassiz, Poiss. Foss., vol. iii (1843), p. 277, pl. xxxiv 
(excl. f. 1, 2, 214); A. S. Woodward, Cat. Foss. Fishes 
B. M., pt. i, 1889, p. 385. 
Including O. xiphodon, O. trigonodon, O. plicatilis, O. retrofiexa, 
and O. guadrans, L. Agassiz, Poiss. Foss., vol. iii. 
Loc. Red and White Crags ; Suffolk. [TVeeth, Brit. Mus.] 
macrorhiza, F. J. Pictet and P. Campiche, Foss. Terr. Crét. St. 
Croix (Pal. Suisse, 1858), p. 83, pl. x, f. 6-18 ; A. S. Wood- 
ward, Cat. Foss. Fishes B. M., pt. i, 1889, p. 381. 
Loc. Gault; Folkestone. Cambridge Greensand. [7eeth,; Brit. 
Mus.) 
mantelli, [-ii] L. Agassiz, Poiss. Foss., Feuill., p. 54 (1835), 
and vol. ni (1843), p. 280, pl. xxxin, f. 1-5, 7-9 (mom f. 6) ; 
F. Dixon, Geol. Sussex, 1850, descr. to pl. xxx, f. 24; 
J. Morris, Cat. Brit. Foss., 1854, p. 336; A. S. Woodward, 
Proc. Geol. Assoc., vol. x (1888), p. 291, and Cat. Foss. 
Fishes B. M., pt. i, 1889, p. 376, pl. xvii, f. 9-21. [See 
also Oxyrhina crasstdens.| 
Squalus zsygana?, G. A. Mantell, Foss. S. Downs, 1822, p. 227 
pl. soon, i. 7}: 85 10) 11,°26,-28: 
Lamna acuminata, L. Agassiz, Poiss. Foss., vol. iii (1843), p. 292, 
pl. xxxviia, f. 54 (? nom f. 55-57, non ibid., Feuill., p. 54, 
