PISCES. 159 
POLYRHIZODUS (continued)— 
colei, J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i (1883), 
p- 502, pl. lx, f.. 9, 10, and Quart. Journ. Geol. Soc., vol. x1, 
1884, p. 622, pl. xxvii, f. 13 ; A. S. Woodward, Cat. Foss. 
Fishes B. M., pt. i, 1889, p. 57- 
Loc. L. Carb. Limest.; Armagh. Yoredale Rocks ; Wensley- 
dale, Yorkshire. [Tooth ; ‘Brit. Mus. ] 
constrictus, Davis. v. Polyrhizodus magnus. 
elongatus, J. W. Davis, Trans. ee Dublin Soc. [2] vol. i 
(1883), p. 503, pl. Ix, f. 16; A. S. Woodward, Cat. Foss. 
Fishes B. M., pt. i, 1889, p. 58. 
wor. L. Cark: ee Armagh. [Tooth; Brit. Mus.] 
magnus, I. M‘Coy, Ann. Mag. Nat. Hist. [2] vol. ii, 1848, p. 126, 
and Brit. Palaeoz. Foss. (1855), p. 641, pl. iii K, f. 6-8; A. S. 
Woodward, Cat. Foss. Fishes B. M., pt. i, 1886, p. Az 
Petalodus radicans, L. Agassiz, Boiss. Foss., vol. ii1 (1843), 
Pp. 174, 384 (name only). 
? Petalodus marginalts, L. Agassiz, zb¢d., pp. 174, 384 (name 
only). 
Polyrhizodus radicans, J. Morris, Cat. Brit. Foss., 1854, Pp. 340; 
J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i (1883) 
DeasConple Ix te 75 Ss 
eee constrictus, J. W. Davis, tbzd., p. 506, pl. Ix, f. 15. 
[Tooth ; Brit. Mus.] 
? Petalodus rectus, L. Agassiz, Poiss. Foss., vol. iii (1843), pp. 
174, 384 (name only) ; J. E. Portlock, Rep. Geol. London- 
derry, 1843, p. 468, pl. xiv, f..9; J. Morris, Cat. Brit. Foss., 
1854, Pp. 337: 
Loc. L. Carb. Limest.; Armagh. [Tooth.] T. 
| pusillus, M‘Coy. v. Helodus pusillus. 
| radicans, Davis. v. Polyrhizodus magnus. 
sinuosus, J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i (1883), 
| p. 504, pl. lx, f. 11-13 ; A. S. Woodward, Cat. Foss. Fishes 
| B. M., pt. i, 1889, p. 58. 
Loc. L. Carb. Limest.; Armagh. [Tooth ; Brit. Mus.] 
| sp., A.S. Woodward, Cat. Foss. Fishes B. M., pt. 1, 1889, p. 59. 
Loc. Carb. Limest.; Oreton, Shropshire. [Imperfect tooth ; 
| Brit. Mus., no. P. 227 a.] 
‘POMOGNATHWS, F. Dixon, Geol. Sussex, 1850, p. 367; A. S. 
Woodward, Proc. Geol. Assoc., vol. x (1888), p. 317. 
PHYLACTOCEPHALUS, J. W. Davis, Trans. Roy. Dublin Soc. 
[2] vol. iii (1887), p. 605. 
eupterygius, F. Dixon, Geol. Sussex, 1850, p. 367, pl. xxxv, 
f. 6, 7; J. Morris, Cat. Brit. Foss., 1854, p.-340; A. 5. 
W oodward, Proc. Geol. Assoc., vol. x (1888), p. 318. 
