PISCES, 121 
MESODON trigonus (con/inued)— 
WMicrodon trigonus, L. Agassiz, Poiss. Foss., vol. i (1844), p. xlii 
Pycnodus latirostris, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), 
p- 199 (undefined). [Mandib. dentition ; Brit. Mus.] 
Loc. Stonesfield Slate. [Vomer; Brit. Mus.] 
umbonatus: /ycnodus uwmbonatus, L. Agassiz, Poiss. Foss., 
vol. ii, pt. ii (1843), p. 194, pl. Ixxii a, f. 1-4; J. Morris, Cat. 
Brit. Foss., 1854, p. 343. 
Loc. Forest Marble; England. [Mandib. dentition.] 
sp.: Pycnodus bucklandi, R. Damon (non Agassiz), Geol. Wey- 
mouth, ed. 3, 1888, Suppl., pl. viii, f. 9. 
Loc. Portland Stone; Portland. [Mandib. dentition; Brit. 
Mus. | 
MESOGOMPHUS, Davis. v. Copodus. 
lingua, Davis. v. Copodus lingua. 
MESOLEPIS, J. Young, Quart. Journ. Geol. Soc., vol. xxii, 1866, 
p- 313; RK. H. Traquair, Trans. Roy. Soc. Edinb., vol. xxix 
(1879), Pp. 355- 
? Popopus, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), p. 83 
(name only). 
micropterus, R. H. Traquair, Trans. Roy. Soc. Edinb., vol. 
xxix (1879), p. 356, pl. iv, f. &. 
Loc. L. Coa!-Meas. (Dalemoor-Rake Ironstone) ; Stanton-by- 
Dale, Derbyshire. [Fish ; Manchester Mus.] 
scalaris, J. Young, Quart. Journ. Geol. Soc., vol. xxii, 1865, 
p- 313;.J. Ward, [Proc.] N. Staffs. Nat. Field Club, 1876, 
p. 235, and Trans. N. Statfs. Inst. Mining Engin., vol. x (1889), 
pl. vii, f. 10-14; R. H. Traquair, Trans. Roy. Soc. Edinb., 
vol. xxix (1879), p. 355, pl. iv, f. 1-5. 
Loc. Coal-Meas.; North Staffordshire. [Fish ; J. Ward Coll.] 
wardi, J. Young, Quart. Journ. Geol. Soc., vol. xxii, 1866, p. 313, 
pl. xxi, f. 1, 3; J. Ward, [Proc.] N. Staffs. Nat. Field Club, 
1875, p. 234; R.H. Traquair (?), Trans. Roy. Soc. Edinb., 
vol. xx1x (1879), p. 355- . 
Loc. Coal-Meas.; North Staffordshire. [Fish ; J. Ward Coll.] 
?sp., R. H. Traquair, Trans. Roy. Soc. Edinb., vol. xxix (1879), 
P- 355- 
? Pododus capitatus, L. Agassiz, Poiss. Foss., vol. ii, pt. 11 (1843), 
p. 163 (name only). T. (Pododus.) 
Loc. Coal-Meas.; Carluke. [Teeth.] 
MESOLOPHOBUS, A. S. Woodward, Cat. Foss. Fishes B. M., 
pt. 1, 1889, p. 61. 
protlematicus, A. S. Woodward, 7dzd., p. 61, pl. i, f. 18, 19. 
Loc. L. Carb. Limest.; Armagh. [Tooth ; Brit. Mus.] T. 
