FISGCES. 105 
ISCHNACANTHWUVS (continued)— 
gracilis (Egerton), J. Powrie, 7d, p. 419; R. H. Traquair, 
Geol. Mag. [3] vol. v, 1888, p. 512. 
Diplacanthus gracilis, P. M. G. Egerton, Figs. and Descript. 
Brit. Organic Remains, dec. x (Mem. Geol. Surv., 1861), 
p- 69, pl. ix; J. Powrie, Trans. Edinb. Geol. Soc., vol. i 
("S70), Pp. 290, pl. x, ‘f. 2. 
Ictinocephalus granula/us, D. Page, Rep. Brit. Assoc., 1858 
(1859), Sect., p. 105 (name only). T. (/ctinocephalus.) 
Loc. L. Old Red Sandst.; Forfarshire. [Fish; J. Powrie Coll.] 
ISCHYODUS, |’. M.G. Egerton, Proc. Geol. Soc., vol. iv (1843), p. 155. 
agassizi, Egerton. v. Edaphodon agassizi. 
agassizi, Bensted (zon Egerton). wv. Ischyodus thurmanni. 
beaumenti, P. M. G. Egerton, Proc. Geol. Soc., vol. iv (1843), 
pp. 155, 156. 
Chimera (Ischyodon) beaumontii, L. Agassiz, Poiss. Foss., vol. ili 
. (1843), p. 346. 
Ischyodus, P. M. G. Egerton, Quart. Journ. Geol. Soc., vol. 11), 
1847, p. 351, pl. xiii, f. 1. 
Loc. Kim. Clay ; Dorsetshire. [Zeeth, Brit. Wus.] 
brevirostris, Agassiz. v. Ischyodus thurmanni. 
bucklandi, P. M. G. Egerton, Proc. Geol. Soc., vol. iv (1843), 
I pp. 153, 156: 
I] Chimera (Ischyodon) bucklandi, L. Agassiz, Poiss. Foss., vol. 
1 iii (1843), p. 343, pl. xl ¢, f. 19. 
- Ganodus bucklandi, P.M. G. Egerton, Quart. Journ. Geol. Soc., 
| vol. iii, 1847, p. 352; J. Morris, Cat. Brit. Foss., 1854, p. 326. 
Loc. Stonesfield Slate. [Mandib. tooth ; Brit. Mus.] 
colei: Chim@ra (Ganodus) colei, L. Agassiz, Poiss. Foss., vol. iii 
(1843), p. 346, pl. xl, f. 8-10. 
Ganodus colet, J. Morris, Cat. Brit. Foss., 1854, p. 327. 
Loc. Stonesfield Slate. [Mandib. and palatine teeth; Brit. Mus. | 
| egertoni (Buckland), P. M. G. Egerton, Proc. Geol. Soc., vol. iv 
| (1843), p. 156; J. Morris, Cat. Brit. Foss., 1854, p. 330; 
J. Phillips, Geol. Oxford, 1871, p. 306, pl. xii, f. 24. 
Chimera egertonii, WW. Buckland, Proc. Geol. Soc., vol. ii (1835), 
p. 206, and Phil. Mag. [3] vol. vill, 1836, p. 5. 
Chimera (Ischyodon) egertoni, L. Agassiz, Poiss. Foss., vol. iii 
(1843), p- 340, pl. xlc, f. I-10. 
Loc. Kim. Clay ; Oxfordshire and Dorsetshire. [Teeth ; Oxford 
Mus. | 
emarginatus, [-a] P. M. G. Egerton, Proc. Geol. Soc., vol. iv 
(1843), pp. 154, 156. 
Ganodus emarginatus, J. Morris, Cat. Brit. Foss., 1854, p. 327- 
Loc. Stonesfield Slate. [Mandib. tooth ; Brit. Mus.] 
