54 BRITISH FOSSIL VERTEBRATA. 
CTENOLEPYS, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), 
p. 180 (name only); J. Phillips, Geol. Oxford, 1871, p, 182. 
eyclus, L. Agassiz, 767d. p. 180 (name only); J. Phillips, Geol. 
Oxford, 1871, p. 182, woodcut xli, f. 1-4. 
Loc. Stonesfield Slate. [Scales ; Oxford Mus.] 7. 
CTENOPETALUS, Davis. v. Ctenoptychius. 
crenatus, Davis. v. Ctenoptychius lobatus. 
serratus, Davis. v. Ctenoptychius serratus. 
CTENOPTYCHIUS, L. Agassiz, Poiss. Foss., vol. iii (1838), 
p- 99. 
CTENOPETALUS, J. W. Davis (e+ Agassiz, MS.), Ann. Mag. Nat. 
Hist. [5] vol. viii, 1881, p. 426. 
HARPACODUS, J. W. Davis (e+ Agassiz, MS.), zbzd., p. 426. 
PERIPRISTIS, O. St. John (ex Agassiz, MS.), Proc. Amer. Phil. 
Soc., vol. xi, 1871, p. 434. 
PETALODOPSIS, J. W. Davis (zon W. J. Barkas), Trans. Roy. 
Dublin Soc. [2] vol. i (1883), p. 498. 
aciculatus, W. J. Barkas. v. Callopristodus aciculatus. 
apicalis, L. Agassiz, Poiss. Foss., vol. iii (1838), p. 99, pl. xix, 
f. 1; E.-W. Binney, Trans.-Manchester Geol. Soc., vol. i 
(1841), p. 169, pl. v, f. 19; R. Garner, Nat. Hist. Stafford., 
1844, p. 446, pl. FE, f. 12; J. Morris, Cat. Brit. Foss., 1854, 
p. 324; T. P. Barkas, Coal Meas. Palzont., 1873, p. 18, f. 21 5 
W. J. Barkas, Monthly Rev. Dental Surgery, vol. ii, 1874, 
pp. 443, 482, f. xiv, xv; J. Ward, [Proc.] N. Staffs. Nat. 
Field Club, 1875, p. 218, f. 12, and Trans. N. Staffs. Inst. 
Mining Engin., vol. x, 1889, p. 141, pl. ii, f. 17, 18, 20; A. S. 
Woodward, Cat. Foss. Fishes B. M., pt. i, 1889, p. 50. 
Petalodus apicalis, W. J. Barkas, Monthly Rev. Dental Surgery, 
vol. ii, 1874, p. 538. 
Loc. Coal-Meas.; Lanarkshire, Northumberland, Yorkshire, 
Lancashire, and Staffordshire. [Tooth ; Brit. Mus.] T. 
crenatus, L. Agassiz, Poiss. Foss., vol. iii (1843), p. 173 (name 
only). 
Loc. Coal-Meas.; Carluke. [Tooth; Hunterian Mus., Glasgow. ] 
cuspidatus, L. Agassiz, zb¢d., p. 173 (name only). 
Loc. Coal-Meas.; Glasgow. [Tooth; Hunterian Mus., Glasgow.] 
dentatus (Owen), L. Agassiz, Poiss. Foss.. vol. iii (1843), pp. 173, 
383 (name only); J. Morris, Cat. Brit. Foss., 1854, p. 324 ; 
A. S. Woodward, Cat. Foss. Fishes B. M., pt. i, 1889, p. 51. 
Clenoptychius macrodus, L. Agassiz, Poiss. Foss., vol. iii (1843), 
pp. 173, 383 (name only); J. E. Portlock, Rep. Geol. Lon- 
donderry, 1843, p. 467, pl. xiv, f. 7 (inaccurate fig.); J. Morris, 
Cat. Brit. Foss., 1854, p. 324. [Tooth; 9/7 Capt. Jones 
Coll.] 
