158 BRITISH FOSSIL VERTEBRATA. 
P@CILODUS (continued) — 
gibbosus, J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i (1883), 
p- 445, pl. liii, f. 27; A. S. Woodward, Cat. Foss. Fishes 
B. M., pt. i, 1889, p. 204, pl. vi, f. 23. 
Loc. L. Carb. Limest.; Armagh and Sligo. [Tooth; Brit. 
Mus. | 
jonesi, [-ii] L. Agassiz, Poiss. Foss., vol. iii (1843), p. 174 (name 
only); [-ii] J. E. Portlock, Rep. Geol. Londonderry, 1843, 
p- 468, pl. xiv a, f. 6 (fig. only) ; J. Morris, Cat. Brit. Foss., 
1854, p. 340; [-ii] F. M‘Coy, Brit. Palzeoz. Foss. (1855), 
p- 639; [-ii] J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i 
(1883), p. 442, pl. liii, f. 20, 21, 23 (om f. 22), and Geol. Mag. 
[3] vol. iii, 1886, p. 152; [-ii] A. S. Woodward, Cat. Foss. 
Fishes B. M., pt. i, 1889, p. 202. [See also Deltodus sublevis.| 
Pecilodus obliguus, .. Agassiz, Poiss. Foss., vol. iii (1843), 
p. 174 (name only); J. Morris, Cat. Brit. Foss., 1854, p. 340; 
F. M‘Coy, Brit. Palzeoz. Foss. (1855), p. 640, pl. ili 1, f. 5 ; 
J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i (1883), p. 443, 
pl. hii, f. 24. [Tooth ; Woodwardian Mus.] 
Pecitodus transversus, L. Agassiz, Poiss. Foss., vol. ili (1843), 
p- 174 (name only); J. E. Portlock, Rep. Geol. Londonderry, 
1843, p. 468, pl. xiv a, f. 7 (fig. only); J. Morris, Cat. Brit. 
Foss., 1854, p. 340. [Imperfect tooth; Brit. Mus.] 
Pecilodus corrugatus, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. 1 (1883), p. 444, pl. liii, f. 25, and Quart. Journ. Geol. 
Soc., vol. xl, 1884, p. 625, pl. xxvii, f. 21. [Imperfect teeth ; 
York Mus. ] 
Loc. L. Carb. Limest.; Armagh and Ayrshire. U. Carb. 
Limest.; Northumberland, Yorkshire, and Derbyshire. 
[Teeth ; Woodwardian Mus. | T. 
obliquus (Agassiz), M‘Coy. wv. Poecilodus jonesi. 
paraltelus (Agassiz), M‘Coy. wv. Deltodus sublevis. 
sublevis (Agassiz), M‘Coy. wv. Deltodus subleevis. 
transversus, Agassiz. v. Pcecilodus jonesi. 
POLYPHRACTUS, Agassiz. v. Dipterus. 
platycephalus, Agassiz. v. Dipterus valenciennesi. 
POLYPLOCODUS, Pander. v. Cricodus. 
POLYRHIZODWUS, F. M‘Coy, Ann. Mag. Nat. Hist. [2] vol. ii, 
1848, p. 125, and Proc. Camb. Phil. Soc., vol. i (1848), p. 65. 
DactTyLopus, J. S. Newberry and A. H. Worthen, Pal. Illinois, 
vol. 11, 1866, p. 33- 
attenuatus, J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i 
(1883), p. 505, pl. Ix, f. 14; A. S. Woodward, Cat. Foss. 
Fishes B. M., pt. i, 1889, p. 58. 
Loc. L. Carb. Limest.; Armagh. [Tooth; Brit. Mus.] 
