106 BRITISH FOSSIL VERTEBRATA. 
ISCHYODUS (continued)— 
gigas, Egerton. wv. Edaphodon gigas. 
?imcisus, E. T. Newton, Chimzroid Fishes Brit. Cret. Rocks 
(Mem. Geol. Surv., 1878), p. 38, pl. xii, f. 3-10. 
Loc. Gault ; Folkestone. Cambridge Greensand. L. Chalk ; 
Kent and Sussex. [Mandib. tooth ; Brit. Mus. ] 
johnsoni, Agassiz. v. Myriacanthus paradoxus. 
latus, E. T. Newton, Chimeroid Fishes Brit. Cret. Rocks (Mem. 
Geol. Surv., 1878), p. 32, pl. x. 
Loc. Cambridge Greensand. [Mandib. tooth; Mus. Pract. 
Geol.] 
mantelli, Egerton. wv. Edaphodon mantelli. 
orthorhinus, Egerton. yv. Myriacanthus granulatus. 
planus, E. T. Newton, Chimeroid Fishes Brit. Cret. Rocks 
(Mem. Geol. Surv, 1878), p. 37, pl. xit, £1, 2. 
Loc. Cambridge Greensand. [Mandib. tooth; T. Jesson Coll.] 
sedgwicki, Egerton. v. Edaphodon sedgwicki. 
thurmanni, F. J. Pictet and P. Campiche, Foss. Terr. Cretacé 
St. Croix (Pal. Suisse, 1858), p. 76, pl. ix, f. 8. 
Ischyodus brevirostris, P. M. G. Egerton, Proc. Geol. Soc., 
vol. iv (1843), p. 156 (name only); J. Morris, Cat. Brit. 
Foss., 1854, p. 330; E. T. Newton, Chimeroid Fishes Brit. 
Cret. Rocks (Mem. Geol. Surv., 1878), p. 27, pl. ix. [Teeth ; 
Brit. Mus.] 
Chimera (Ischyodon) brevirostris, L. Agassiz, Poiss. Foss., 
vol. ili (1843), p. 344 (name only). 
Chimera (Ischyodon) agassizit, L. Agassiz (errore), thid., pl. xl¢, 
f. 14,15. [Palatine tooth; Brit. Mus.] 
Ischyodus agassizit, W. H. Bensted (errore), Geologist, vol. v, 
1862, p. 378. 
Loc. Gault; Folkestone. Cambridge Greensand. Varieties 
also in L, Greensand, Maidstone, and L. Chalk, Newmarket. 
[Zeeth; Brit. Mus.) 
townsendi (Buckland), P. M. G. Egerton, Proc. Geol. Soc., 
vol. iv (1843), p. 156 (/. cownshendt) ; J. Morris, Cat. Brit. 
Foss., 1854, p. 330 (/. cownshend?); [-ii] E. T. Newton, 
Chimeroid Fishes Brit. Cret. Rocks (Mem. Geol. Surv., 
1878), p. 33, pl. xi, and Proc. Geol. Assoc., vol. vii (1881), 
p. 116, woodcuts. 
Chimera townsendit, \W. Buckland, Proc. Geol. Soc., vol. ii 
(1835), p. 206, and Phil. Mag. [3] vol. viii, 1836, p. 5. 
Chimera (Ischyodon) townsendit, L. Agassiz, Poiss. Foss., vol. iit 
(1843), Pp. 343, pl. xl, f. 20-22, pl. xlc, f. 17, 18. 
Loc. Portlandian ; Oxfordshire, Wiltshire, and Dorsetshire. 
Derived in Potton Bone-bed (Neocomian). [Mandib. tooth ; 
Brit. Mus.] T. 
