JETS OF RS 55 
CTENOPTYCHIUS dentatus (continued)— 
| Petalodus dentatus, R. Owen, Odontogr. (1840), p. 62. 
Harpacodus dentatus, J. Morris and G. E. Roberts, Quart. Journ. 
Geol. Soc., vol. xviii, 1862, p. 100 (name only); J. W. Davis, 
Ann. Mag. Nat. Hist. [5] vol. viii, 1881, p. 426, and Trans. 
Roy. Dublin Soc. [2] vol. i (1883), p. 514, pl. Ixi, f. 10. 
T. (Harpacodus.) 
Loc. L. Carb. Limest.; Armagh. [Tooth ; o/ Capt. Jones 
Coll. ] 
denticulatus, Agassiz. v. Callopristodus pectinatus. 
lobatus (Etheridge), A. S. Woodward, Cat. Foss. Fishes B. M., 
pt. i, 1889, p. 51. 
Petalodus ? lobatus, R. Etheridge, jun., Geol. Mag. [2] vol. ii, 
1875, p. 244, pl. viii, f. 5, 6. 
Ctenopetalus crenatus, J. W. Davis, Trans. Roy. Dublin Soc. 
[2] vol. i (1883), p. 513, pl. Ixi, f. 9 (broken tooth), and Quart. 
Journ. Geol. Soc., vol. xl, 1884, p. 623, pl. xxvii, f. 18. [Tooth ; 
York Mus. ] 
Loc. L. Carb. Limest.; Lanarkshire. U. Carb. Limest.; York- 
- shire and Derbyshire. [Tooth; Edinburgh Mus.] 
macrodus, Agassiz. _v. Ctenoptychius dentatus. 
obtusus, Barkas. , v. Callopristodus pectinatus. 
? ordi, [-ii] J. W. Davis, Quart. Journ. Geol. Soc., vol. xxxvii, 1881, 
p- 422, pl. xxii, f. 8; [-ii] A. S. Woodward, Cat. Foss. Fishes 
B. M., pt. 1, 1889, p. 54. 
Loc. Rheetic ; Aust Cliff, near Bristol. [Tooth?; J. W. Davis 
Coll.] 
pectinatus, Agassiz. v. Callopristodus pectinatus. 
priscus, L. Agassiz, Poiss. Foss. V. G. R. (1844), pp. 111, 124; 
J. Morris, Cat. Brit. Foss., 1854, p. 324. An indeterminable 
ichthyolite (A. S. Woodward, Cat. Foss. Fishes B. M., pt. i, 
1889, p. 54). 
Loc. Old Red Sandst.; Scotland. [Type unknown.] 
serratus (Owen), L. Agassiz, Poiss. Foss., vol. iii (1843), pp. 173, 
383 (name only) ; J. Morris, Cat. Brit. Foss., 1854, p. 324 ; 
F. M‘Coy, Brit. Palzeoz. Foss. (1855), p. 626, pl. iit, 
f. 21-23; A. S. Woodward, Cat. Foss. Fishes B. M., pt. i, 
1889, p. 52. 
Petalodus serratus, R. Owen, Odontogr. (1840), p. 62. 
Ctenopetalus serratus, J. Morris and G. E. Roberts, Quart. 
Journ. Geol. Soc., vol. xviii, 1862, p. 100 (name only) ; J. W. 
Davis, Ann. Mag. Nat. Hist. [5] vol. viii, 1881, p. 426, and 
Trans. Roy. Dublin Soc. [2] vol. i (1883), p. 512, pl. Ixi, f. 6-8. 
T. (Crenopetalus.) 
Loc. L. Carb. Limest.; Armagh. Carb. Limest. ; Shropshire 
ea and Derbyshire (M‘Coy). [Tooth ; o/im Capt. Jones 
Coll. 
