PISCES. 173 



PYCNODUS {continued)— 



rildis, J. Phillips, Geol. Oxford, 1871, p. 1S0, woodcut xl, f. 1 

 (name and fig. only). [? Genus.] 

 LOC. Stonesfield Slate. [Mandib. ramus ; Oxford Mus.] 

 vugulosus, Agassiz. v. Mesodon rugulosus. 



toliapicus, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), P- IO A 



pi. lxxii<z, f. 55 ; J. Morris, Cat. Brit. Foss., 1854, p. 343 ; 



P. M. G. Egerton, Geol. Mag. [2] vol. iv, 1877, p. 53. 



Periodus koenigii, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), 



p. 201, pi. lxxii <2, f. 61, 62 ; F. Dixon, Geol. Sussex, 1850, 



p. 205, pi. x, f. 13 ; J. Morris, Cat. Brit. Foss., 1854, p. 2>2>7- 



[Abraded mandib. dentition ; Brit. Mus.] T. {Periodus.) 



LOC. London Clay ; Sheppey. [Mandib. dentition ; Oxford Mus.] 



triffonus, Agassiz. v. Mesodon trigonus. 



tristy chins, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), p. 199 

 (name only). [ ? Mesodon.] 

 LOC. ? Stonesfield Slate. [Teeth ; olim Bristol Mus.] 

 umbonatus, Agassiz. v. Mesodon umbonatus. 



PYGOPTERUS, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1834), p. 74 ; 



R. H. Traquair, Quart. Journ. Geol. Soc, vol. xxxiii, 1877, 



p. 574- 

 bucJUandiy Hibbert. v. Elonichthys bucklandi. 

 greenochi, Agassiz. t'. Nematoptychius greenocki. 



jamesoni, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), P- 7$ 

 (name only). 

 LOC. Calcif. Sandst. ; Burdiehouse. 



latus, P. M. G. Egerton, in King's Permian Foss. (Pal. Soc, 1850), 

 p. 233, pi. xxiv, f. 1 ; J. Morris, Cat. Brit. Foss., 1854, p. 343 ; 

 R. H. Traquair, Quart. Journ. Geol. Soc, vol. xxxiii, 1877, 

 P- 575- 

 LOC. Magnesian Limest. ; Ferry Hill, Durham. [Fish ; Brit. 

 Mus.] 



mandibularis, L. Agassiz, Poiss. Foss., vol. ii, pt. i (1834), p. 76, 

 pis. liii, liii a ; W. King, Permian Foss. (Pal. Soc, 1850), 

 p. 232, pi. xxiii, f. 1 ; J. Morris, Cat. Brit. Foss., 1854, p. 343 ; 

 F. M'Coy, Brit. Palaeoz. Foss. (1855), P- 608 ; R. H. Traquair, 

 Quart. Journ. Geol. Soc, vol. xxxiii, 1877, P- 575- 



' Unknown fish,' A. Sedgwick, Trans. Geol. Soc [2] vol. iii (1829), 

 p. 118, pi. x. 



Ne)nopteryx mandibularis, L Agassiz, Neues Jahrb., 1833, 

 p. 476. 



Pygopterus sculp/us, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1834), 

 P-77- 



Pygopterus scoticus, L. Agassiz, ibid., pt. i, p. 10 ; H. G. Bronn, 

 Leth. Geogn., ed. 2, vol. i, 1837, p. 128. 



LOC. Magnesian Limest. ; Durham. [Fish; olim Miss Surtees 

 Coll.] T. 



