154 BRITISH FOSSIL VERTEBRATA. 



PLSURACANTHUS cylimdricus (continued)— 



Club, 1875, p. 217, and Trans. N. Staffs. Inst. Mining 



Engin., vol. x (1889!, p. 137. T. (Orthacanthus.) 



Orthocanthus, T. ?. Barkas, Coal Meas. Palasont., 1873, P- 2 °> 



f. 39-42. 

 ? Phricacanthus biserialis, J. W. Davis, Quart. Journ. Geol. Soc, 



vol. xxxv, 1879, P- ! 86, pi. x, f. 16, 17. [Abraded spine; 



J. \V. Davis Coll.] T. (Phricacanthus.) 



Lophacanthus taylori, T. Stock, Ann. Mag. Nat. Hist. [5] vol. v, 



1880, p. 217, woodcut. [Abraded spine ; J. Taylor Coll.] 



T. (Lophacanthus) 

 ? Anodontacanthus acutus, J. VV. Davis, Quart. Journ. Geol. Soc, 



vol. xxxvii, 1 88 1, p. 42S, pi. xxii, f. 10. [Abraded spine ; 



J. W. Davis Coll.] T. (Anodontacanthus.) 



Pleur acanthus ( Orthacanthus) cylindricus, R. H. Traquair, 



Geol. Mag. [3] vol. v, 1888, p. 101. 

 LOC. Coal-Meas. ; England and S. Scotland. [Spine.] 



denticulatus, J. W. Davis, Quart. Journ. Geol. Soc, vol. xxxvi, 

 1880, p. 334, pi. xii, 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, 1SS1, p. 36. 

 LOC. M. Carb. Limest. (Blackband Ironstone) ; Borough Lee, 

 Edinburgh. Spine ; Edinburgh Mus.] 



erect us, Davis. : . Pleuracanthus laevissimus. 



fjibbosus. Ward. v. Diplodus gibbosus. 



g-racillimus, R. H. Traquair, Geol. Mag. [2] vol. ix, 1882, p. 540. 

 LOC. M. Carb. Limest. 1 Blackband Ironstone) ; Borough Lee, 

 Edinburgh. L 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.] 



laevissimus, L Agassiz, Poiss. Foss., vol. iii (1837), p. 66, pi. xlv, 

 f. 4, 5 ; J. Morris, Cat. Brit. Foss., 1854, p. 339 ; J. Ward, 

 [Proa] N. Staffs. Nat. Field Club, 1875, P- 22 5> an d Trans. 

 N. Staffs. Ins:. Mining Engin., vol. x (1889), p. 134, pi. iii, 

 f. 8 ; J. W. Davis. Quart. Journ. Geol. Soc, vol. xxxvi, 1880, 

 p. 325 ; R. H. Traquair, Geol. Mag. [3] vol. v, 1888, p. 101 ; 

 A. S. Woodward, Car. 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, ibid., p. 62, woodcut. [Spine ; 

 J. W. Davis Coll.] 



Pleuracanthus credits. ]. W. Davis, ibid., p. 326, woodcut. [Spine ; 

 J. W. Davis Coll.] 



