162 BRITISH FOSSIL VERTEBRATA. 



PRZSTODUS {continued)— 



concinnus (Davis), R. H. Traquair, Geol. Mag. [3] vol. v, 1888, 

 p. 102 ; A. S. Woodward, Cat. Foss. Fishes B. M., pt. i, 

 1889, p. 64. 

 Pristicladodus concinnus, J. W. Davis, Trans. Roy. Dublin Soc. 

 [2] vol. i (1883), p. 385, pi. xlix, f. 23, and Quart. Journ. Geol. 

 Soc, vol xl, 1884, p. 621, pi. xxvi, f. 15. 

 LOC. U. Carb. Limest.; Yorkshire. [Imperfect tooth ; York 

 Mus.] 



faicatus, J. Morris and G. E. Roberts (ex Agassiz, MS.), Quart. 

 Journ. Geol. Soc, vol. xviii, 1862, p. 101 (name only) ; J. \V. 

 Davis, Trans. Roy. Dublin Soc. [2] vol. i, 1883, p. 519, pi. lxi, 

 f. 17-22, and Quart. Journ. Geol. Soc, vol. xl, 1884, P- 623, 

 pi. xxvi, f. 19, 20; R. H. Traquair, Geol. Mag. [3] vol. v, 

 1888, p. 101 ; A. S. Woodward, Cat. Foss. Fishes B. M., 

 pt. i, 1889, p. 63. 

 LOC. U. Carb. Limest; Yorkshire. [Teeth; Brit. Mus.] T. 



PBOGXATIIODUS, Egerton. v. Myriacanthus. 

 guenthei'i, Egerton. v. Myriacanthus paradoxus. 



PBOTOGALEUS, Molin. v. Galeocerdo. 



minor (Agassiz), Molin. v. Galeocerdo minor. 



FROTOSPHYHJENA, J. Leidy, Trans. Amer. Phil. Soc, vol. xi, 



(1857), P- 95- 

 Saurocephalus. L. Agassiz (non Harlan), Poiss. Foss., vol. v, 



pt. i (1843), P- I02 - 

 Erisichthe, E. D. Cope, Vert. Cret. Form. West (Rep. U. S. 



Geol. Sun\ Territ., vol. ii, 1875), P- 2I 7 5 Bull. U. S. Geol. 



Surv. Territ., vol. iii, 1877, p. 821. 



ferox, J. Leidy, Trans. Amer. Phil. Soc, vol. xi (1857^, p. 95 ; E. 



T. Newton, Quart. Journ. Geol. Soc, vol. xxxiv, 1878, p. 788; 



A. S. Woodward, Proc Geol. Assoc, vol. x (1888), p. 321. 

 'Undetermined,' G. A. Mantell, Foss. South Downs, 1822, 



p. 227, pi. xxxiii, f. 7-9. 

 Saurocephalus lanciformis, L. Agassiz (non Harlan), Poiss. 



Foss., Feuill., p. 55 (1835), and vo1 - v > P 1 - i ( l8 43), P- io2 i 



pi. xxv f, f. 21-29; F. Dixon, Geol. Sussex, 1850, p. 374, 



pi. xxx, f. 21, pi. xxxi, f. 12, pi. xxxii*, f. 1, pi. xxxiv, f . 1 1 ; 



J. Morris, Cat. Brit. Foss., 1854, p. 343. 

 Saurocephalus /aneeo/alus, L. Agassiz, Poiss. Foss., vol. v, pt. i 



(1883), p. 8 (misprint). 

 Xiphias dixoni, J. Leidy, Trans. Amer. Phil. Soc, vol. xi (1857), 



p. 95. [Rostrum ; Brit. Mus.] 

 Erisichthe dixoni, E. D. Cope, Bull. U. S. Geol. Surv. Territ., 



vol. iii, 1877, p. 821 ; W. Davies, Geol. Mag. [2] vol. v, 1878, 



p. 260, pi. viii, f. 3. 

 LOC. Chalk ; S. E. England. [Teeth ; Brit. Mus.] T. 



