PISCES. 131 
ONCEHUS (continued)— 
tenuistriatus, L. Agassiz, Poiss. Foss., vol. iii (1837), p. 7, pl. i, 
f. 10; R. I. Murchison, Silur. Syst. (1839), p. 607, pl. iv, 
f. 12, 13, 57-59; J. Morris, Cat. Brit. Foss., 1854, p. 3343 
F. M‘Coy, Brit. Paleeoz. Foss. (1855), p. 577. 
Loc. Ludlow Bone-bed and Downton Sandst.; Herefordshire. 
L. Old Red Sandst. (Passage Beds); Ledbury. [Spine ; 
olim Murchison Coll. ] 
ONYCHODUWS, J. S. Newberry, Geol. Surv. Ohio, vol. i, pt. 11, 
1873, p. 2906. 
anglicus, A. S. Woodward, Geol. Mag. [3] vol. v, 1888, p. 500, 
woodcut. 
Loc. L. Old Red Sandst. (Passage Beds); Herefordshire. 
[Presymphysial teeth ; Oxford Mus. ] 
OPHIOP?PSIS, L. Agassiz, Poiss. Foss., vol. il, pt. 1 (1843), p. 289. 
brevicops, P. M. G. Egerton, Figs. and Descript. Brit. Organic 
Remains, dec. vi (Mem. Geol. Surv., 1852), no. 6, pl. vi; 
J. Morris, Cat. Brit. Foss., 1854, p. 334. 
Loc. L. Purbeck.; Oakleigh Quarry, near Tisbury, Wiltshire. 
[Fish ; Mus. Pract. Geol. and Brit. Mus. ] 
dorsalis, L. Agassiz, Poiss. Foss., vol. 11, pt. i (1843), p. 291, 
pl. xxxvi, f. 5 ; J. Morris, Cat. Brit. Foss., 1854, p. 334. 
Loc. Purbeck ; Swanage. [Fish; Brit. Mus.] 
fiesheri (Agassiz), K. A. von Zittel, Handb. Palzeont., vol. iii (1887), 
Pp. 217: 
Pholidophorus flesheri, L. Agassiz, Poiss. Foss., vol. ii, pt. i 
(te49), p.°201, pl. xxvii, £8; J: Mors, ‘Cat. Brit. Foss., 
1854, p- 338. 
Loc. Inf. Oolite ; Blisworth. [Imperfect fish; counterpart in 
Brit. Mus. |} 
penicillatus, L. Agassiz, Poiss. Foss., vol. ii, pt. 1 (1843), p. 290, 
pl. xxxvi, f. 2-4; J. Morris, Cat. Brit. Foss., 1854, p. 334. 
Loc. Purbeck; ? Swanage. [Fish; Brit. Mus.] 
sauroides (Egerton), Zittel. wv. Eugnathus philpote. 
ORACANTHUS, L. Agassiz, Poiss. Foss., vol. iii (1837), p. 13. 
PNIGEACANTHUS, O. St. John and A. H. Worthen, Pal. Illinois, 
vol. vi, 1875, p. 480. 
PHODERACANTHUS, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. 1 (1883), p. 533- 
armigerus, R. H. Traquair, Trans. Edinb. Geol. Soc., vol. v 
(1887), p. 313 (name only), and Geol. Mag. [3] vol. v, 1888, 
p. 86. 
Loc. Calcif. Sandst.; Abden, Fife, and Eskdale, Dumfries. 
Carb. Limest.; Broadstone, Ayrshire. [Spine; R. Craig 
Coll. Also portion of fish ; Edinburgh Mus.] 
