PISCES. 195 
TRISTYCHIUS, L. Agassiz, Poiss. Foss., vol. iii (1837), p. 21; 
R. H. Traquair, Geol. Mag. [3] vol. v, 1888, p. 83. 
PTYCHACANTHUS, L. Agassiz, Poiss. Foss., vol. ili (1837), 
p. 22. 
arcuatus, L. Agassiz, zbid. (1837), p. 22, pl. ia, f.9-11 ; J. Morris, 
Cat. Brit. Foss., 1854, p. 346; T. Stock, Ann. Mag. Nat. 
Hist. [5] vol. xii, 1883, p. 177, pl. vii; R. H. Traquair, Geol. 
Mag. [3] vol. v, 1888, p. 83, and zézd., vol. vi, 1889, p. 27; 
A. S. Woodward, Cat. Foss. Fishes B. M., pt. i, 1889, 
Pp. 245. 
Ptychacanthus sublevis, L. Agassiz, Poiss. Foss., vol. iii (1837), 
. 23, pl. v, f. 1-3; J. Morris, Cat. Brit. Foss., 1854, p. 341. 
Spine ; 0/772 Jameson Coll.] 
Loc. Calcif. Sandst. ; S. Scotland. [Spine ; Anderson’s College, 
Glasgow. | 
fimbriatus, Stock. v. Harpacanthus fimbriatus. 
minor, J. E. Portlock, Rep. Geol. Londonderry, 1843, p. 464, 
pl xiv, f. 6; J. Morris, Cat. Brit. Foss., 1854, p. 346. 
|=? Sphenacanthus or Hoplonchus.| 
Loc. Carboniferous ; Fermanagh. [Spine ; Mus. Pract. Geol.] 
URZUS, L. Agassiz, Neues Jahrb., 1832, p. 142. = Caturus and 
Pachycormus. 
gracilis, Agassiz. v. Pachycormus gracilis. 
URONEMVUS, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), p. 178 ; 
R. H. Traquair, Journ. Roy. Geol. Soc. Ireland, n.s., vol. iii 
(1873), Pp. 41. 
lobatus, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), p. 178; 
R. H. Traquair, Journ. Roy. Geol. Soc. Ireland, n.s., vol. iii 
(873), p.. 4%, pl. v; j.. Mortis, Cat. Brit; Foss., 1854, 
p. 346. 
Phaneropleuron elegans, R. H. Traquair, Geol. Mag., vol. viii, 
1871, p. 534. [Name withdrawn, Journ. Roy. Geol. Soc. 
Ireland, n.s., vol. ii (1873), p. 47.] 
Loc. Calcif. Sandst.; Burdiehouse, near Edinburgh. [Imperfect 
fish ; Brit. Mus.] T. 
? magnus, R. H. Traquair, Geol. Mag. [2] vol. i, 1874, p. 554. 
Loc. Coal-Meas. (Blackband Ironstone) ; Airdrie, Lanarkshire. 
{Tail; Brit. Mus.] 
VENUSTODUS, O. St. John and A. H. Worthen, Pal. Illinois, vol. 
vi, 1875, p. 344. 
?clavatus (Davis), A. S. Woodward, Cat. Foss. Fishes B. M., 
pt. i, 1889, p. 225. 
Harpacodus clavatus, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. i (1883), p. 515, pl. Ixi, f. 20. 
Loc. L. Carb. Limest. ; Armagh. [Tooth ; Brit. Mus.] 
