PISCES. 143 
PETALODOPSIS, W. J. Barkas. wv. Ctenodus. 
mirabilis, W. J. Barkas. wv. Ctenodus obliquus. 
PETALODOPSIS, Davis. v. Ctenoptychius. 
tripartitus, Davis. v. Ctenoptychius tripartitus. 
PETALODUWS, R. Owen, Odontography (1841), p. 61. 
CHOMATODUS, L. Agassiz, Poiss. Foss., vol. iii (1838), p. 107 
(pars). 
ANTLIODUS, J. S. Newberry and A H. Worthen, Pal. Illinois, 
vol. 1i, 1866, p. 33. 
acuminatus, L. Agassiz, Poiss. Foss., vol. iii (1843), pp. 174, 
384; J. Morris, Cat. Brit. Foss., 1854, p. 337;. F.. M‘Coy, 
Brit. Palzeoz. Foss. (1855), p. 635, pl. 11 G, f. 4; J. W. Davis, 
Trans. Roy. Dublin Soc. [2] vol. 1 (1883), p. 494, pl. lix, 
f. 22-24, and Quart. Journ. Geol. Soc., vol. xl, 1884, p. 624, 
pl. xxvi, f. 10; A. S. Woodward, Cat. Foss. Fishes B. M., 
pt. i, 1889, p. 42, pl. i, f. 4-7. 
Chomatodus acuminatus, L, Agassiz, Poiss. Foss., vol. iii (1838), 
p. 108, pl. xix, f. 11-13. 
Petalodus hastingstz, R. Owen, Odontogr. (1841), p. 61, pl. xxii, 
f. 3-5; ? J. E. Portlock, Rep. Geol. Londonderry, 1843, 
p. 468, pl. xiv, f. 10; [-iz] J. Morris, Cat. Brit. Foss., 1854, 
p. 337. [See also P. hastingsiz.] [Portion of tooth; Brit. 
Mus. ] 
Petalodus rhombus, ¥. M‘Coy, Ann. Mag. Nat. Hist. [2] vol. ii, 
1848, p. 125; J. Morris, Cat. Brit. Foss., 1854, p. 337. 
[Tooth ; o/ém Capt. Jones Coll.] 
Petalodus ineguitlateralis, J. W. Davis, Trans. Roy. Dublin Soc. 
[2] vol. i (1883), p. 497, pl. lx, f. 3, 4. [Teeth; Brit. Mus.] 
Loc. U. Carb. Limest.; Durham, Yorkshire, Derbyshire, Fife- 
shire, and Ayrshire. [Tooth ; o/¢# Murchison Coll.] T. 
?acutus: Chomatodus acutus, J. W. Davis, Trans. Roy. Dublin 
Soc. [2] vol. i (1883), p. 509, pl. Ixi, f. 2. ? Petalodus 
(A. S. Woodward, Cat. Foss. Fishes B. M., pt. i, 1889, p. 46.) 
Loc. L. Carb. Limest.; Armagh. [Tooth; Brit. Mus.] 
apicalis (Agassiz), W. J. Barkas. wv. Ctenoptychius apicalis. 
davisi, [-ii] A. S. Woodward, Cat. Foss. Fishes B. M., pt. i, 1889, 
p- 46. 
Loc. L. Carb. Limest.; Armagh. [Teeth; Brit. Mus.] 
dentatus, Owen. v. Ctenoptychius dentatus. 
flabellula, A. S. Woodward, Cat. Foss. Fishes B. M., pt. i, 1889, 
p. 45, pl. 1, f. 8. 
Loc. Carb. Limest.; Shropshire. [Tooth; Brit. Mus.] 
grandis, J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i (1883), 
p:.496, pl. Ix, f..1. 
Loc. L. Carb. Limest.; Armagh. [Imperfect tooth ; Brit. Mus.] 
