154 BRITISH FOSSIL VERTEBRATA. 
PLEURACANTHUWS cylindricus (continued)— 
Club, 1875, p. 217, and Trans. N. Staffs. Inst. Mining 
Engin., vol. x (1889), p. 137. T. (Orthacanthus.) 
Orthocanthus, T. P. Barkas, Coal Meas. Palzont., 1873, p. 20, 
f. 39-42. 
? Phricacanthus biserialis, J. WV. Davis, Quart. Journ. Geol. Soc., 
vol. xxxv, 1879, p. 186, pl. x, f. 16, 17. [Abraded spine ; 
J. W. Davis Coll.] T. (Phricacanthus.) 
Lophacanthus taylor, T. Stock, Ann. Mag. Nat. Hist. [5] vol. v, 
1880, p. 217, woodcut. [Abraded spine ; J. Taylor Coll.] 
T. (Lophacanthus.) 
? Anodontacanthus acutus, J. W. Davis, Quart. Journ. Geol. Soc., 
vol. xxxvii, 1881, p. 428, pl. xxi, f. 10. [Abraded spine ; 
J. W. Davis Coll.] T. (Anodontacanthus.) 
Pleuracanthus (Orthacanthus) cylindricus, R. H. Traquair, 
Geol. Mag. [3] vol. v, 1888, p. 1o1. 
Loc. Coal-Meas. ; England and S. Scotland. [Spine.] 
denticulatus, J. W. Davis, Quart. Journ. Geoi. Soc., vol. xxxvi, 
1880, p. 334, pl. xil, f. 7. 
Loc. L. Coal-Meas. (Better-bed Coal); Clifton, near Halifax. 
[Spine ; J. W. Davis Coll.] 
elegans, R. H. Traquair, Geol. Mag. [2] vol. viii, 1881, p. 36. 
Loc. M. Carb. Limest. (Blackband Ironstone) ; Borough Lee, 
Edinburgh. [Spine ; Edinburgh Mus.] 
erectus, Davis. v. Pleuracanthus levissimus. 
ee 
gibbosus, Ward. wv. Diplodus gibbosus. ! 
gracillimus, R. H. Traquair, Geol. Mag. [2] vol. ix, 1882, p. 540. | 
Loc. M. Carb. Limest. (Blackband Ironstone) ; Borough Lee, | 
Edinburgh. [Spine ; Edinburgh Mus.] 
horridulus, R. H. Traquair, Geol. Mag. [2] vol. ix, 1882, p. 541. 
Loc. M. Carb. Limest. (Blackband Ironstone); Borough Lee, 
Edinburgh. [Spine; Edinburgh Mus.] 
leevissimus, L. Agassiz, Poiss. Foss., vol. iii (1837), p. 66, pl. xlv, 
f. 4, 5; J. Morris, Cat. Brit. Foss., 1854, p. 339; J. Ward, 
[Proc.] N. Staffs. Nat. Field Club, 1875, p. 225, and Trans. 
N. Staffs. Inst. Mining Engin., vol. x (1889), p. 134, pl. ili, 
f.8 ; J. W. Davis, Quart. Journ. Geol. Soc., vol. xxxvi, 1880, 
p- 325; R. H. Traquair, Geol. Mag. [3] vol. v, 1888, p. ror ; 
A. S. Woodward, Cat. Foss. Fishes b. M., pt. i, 1889, p. 5. 
Pleuracanthus planus, L. Agassiz, Poiss. Foss., vol. iii (1843), 
p. 177 (name only); J. W. Davis, Quart. Journ. Geol. Soc., 
vol. xxxvi, 1880, p. 329. {[Spine; Brit. Mus.] 
Compsacanthus major, J.W. Davis, z6¢d., p.62, woodcut. [Spine; 
J. W. Davis Coll.] 
Pleuracanthus erectus, J. W.Davis,zbid., p. 326, woodcut. [Spine ; 
J. W. Davis Coll.] 
