52 BRITISH FOSSIL VERTEBRATA. 
CTENODUS (continued)—- 
elegans, Atthey. v. Ctenodus obliquus. 
ellipticus, Atthey. v. Ctenodus obliquus. 
imbricatus, Atthey. v. Ctenodus obliquus. 
interruptus, T. P. Barkas, Scientific Opinion, vol. ii, 1869, 
p. 113; W. J. Barkas, Proc. Roy. Soc. N. S. Wales, vol. x, 
1877, p. 108. 
Loc. Coal-Meas.; Northumberland. [Tooth ; York Mus.] 
monoceros, T. P. Barkas. v. Ctenodus obliquus. 
murchisoni, L. Agassiz, Poiss. Foss., vol.i (1844), p. xxxv (name 
only); described and figured in forthcoming Cat. Foss. 
Fishes B. M., pt. ii, pl. iv, f. 4. 
Loc. U. Coal-Meas. (Sf7vorb7s Limest.) ; Shropshire. [Tooth; 
Brit. Mus. ] 
obliquus, T. Atthey, Ann. Mag. Nat. Hist. [4] vol. i, 1868, p. 84; 
A. Hancock and T. Atthey, Nat. Hist. Trans. Northumb. 
and Durham, vol. iii (1870), p. 63, and zézd., vol. iv (1872), 
pl. xiii, f. 2; T. P. Barkas, Coal Meas. Palont., 1873, p. 28, 
f. 85,90; J. Ward, [Proc.] N. Staffs. Nat. Field Club, 1875, 
p. 247, and Trans. N. Staffs. Inst. Mining Engin., vol. x, 1889, 
pl. iii, f.5 ; T. Atthey, Ann. Mag. Nat. Hist. [4]vol. xv, 1875, 
p. 309, pl. xix, and Nat. Hist. Trans. Northumb. and 
Durham, vol. v (1877), p. 227, pl. v; W. J. Barkas, Proc. 
Roy. Soc. N.S. Wales, vol. x, 1877, p: 105, pl, © 2, ome 
L. C. Miall, Proc. Yorksh. Geol. and Polyt. Soc., vol. vii 
(1881), p. 291, woodcut 4; A. Fritsch, Fauna der Gaskohle, 
vol. ii (1888), p. 66, pls. Ixxi-Ixxix, pl. Ixxx, f. 5-12, and 
woodcuts. 
Ctenodus elegans, T. Atthey, Ann. Mag. Nat. Hist. [4] vol. i, 
1868, p. 86 ; A. Hancock and T. Atthey, Nat. Hist. Trans. 
Northumb. and Durham, vol. ili (1870), p. 64, and zé¢d., 
vol. iv (1872), p. 407, pl. xiii, f. 3; T. P. Barkas, Coal Meas. 
Palzont., 1873, p. 28, f. 86; W. J. Barkas, Proc. Roy. Soc. 
N. S. Wales, vol. x, 1877, p. 105, pl., f. 3, 12, 13. [Teeth; 
Newcastle-upon-Tyne Mus. ] 
Ctenodus imbricatus, T. Atthey, Ann. Mag. Nat. Hist. [4] vol. i, 
1868, p. 86; A. Hancock and T. Atthey, Nat. Hist. Trans. 
Northumb. and Durham, vol. iii (1870), p. 65; and zézd,, 
vol. iv (1872), p. 407, pl. xiii, f. i; J. Ward, [Proc.] N. Staffs. 
Nat. Field Club, 1875, p. 247; W. J. Barkas, Proc. Roy. 
Soc. N.S. Wales, vol. x, 1877, p. 107, pl., f. 6,20. [Teeth; 
Newcastle-upon-Tyne Mus.] 
Ctenodus ellipticus, T. Atthey, Ann. Mag. Nat. Hist. [4] vol. i, 
1868, p. 87 ; A. Hancock and T. Atthey, Nat. Hist. Trans. 
Northumb. and Durham, vol. iii (1870), p. 66; J. Ward, 
[Proc.] N. Staffs. Nat. Field Club, 1875, p. 246, and Trans. 
N. Staffs. Inst. Mining Engin., vol. x, 1889, pl. iii, £.6; W. J. 
Barkas, Proc. Roy. Soc. N. S. Wales, vol. x, 1877, p. 107. 
[Teeth ; Newcastle-upon-Tyne Mus.] 
