126 BRITISH FOSSIL VERTEBRATA. 



MYHIACANTHUS paradoxus (continued)— 



Chimoera (Ischyodon) johnsonii, L. Agassiz, Poiss. Foss., vol. iii 



(1843), p. 344, pi. x \c,f. 22. 

 Ischyodus johnsom, J. Morris, Cat. Brit. Foss., 1854, p. 330. 



[Teeth ; Brit. Mus.] 

 Prognattiodus guentheri, P. M. G. Egerton, Quart. Journ. Geol. 



Soc, vol. xxviii, 1872, p. 233, pi. viii. [Head, with teeth ; 



Brit. Mus.] T. (Prognattiodus.) 



LOC. L. Lias ; Lyme Regis. [Dorsal fin-spines ; Brit. Mus. and 



Bristol Mus.] T. 



retrorsus, Agassiz. v. Myriacanthus paradoxus. 



MlIilOLEFIS, Egerton, MS. (non Quart. Journ. Geol. Soc, vol. 

 xx, 1864, p. 3), quoted by Etheridge, Foss. Brit. Islands, pt. i, 

 1888, p. j^. (Carboniferous ?) 



BXYRXPRZSTXS, Cuvier, Mem. Acad. Sci. Inst. France, vol. viii, 

 1825 (1829), p. cxxix. 



toliapicus, L. Agassiz, Rep. Brit. Assoc, 1844 (1845), P- 3°7 

 (name only). 

 LOC. London Clay ; Sheppey. [Imperfect head ; Brit. Mus.] 



NAIS1A, Miinster. v. Lepidosteus. 



apicalis (Miinster), Morris, v. Lepidosteus fimbriatus. 



2JEIVI ACANTHUS, L. Agassiz, Poiss. Foss., vol. iii (1837), p. 25 ; 

 A. S. Woodward, Trans. Leicester Lit. and Phil. Soc, n.s., 

 pt. xi, 1889, p. 18. 



brevis, J. Phillips. Geol. Oxford, 1871, p. 178, woodcut xxxviii, 

 f. 3-5 (figs. only). 

 Nemacanthus brevispinus, L. Agassiz, Poiss. Foss., vol. iii (1S43), 



p. 177 (name only). 

 LOC. Stonesfield Slate. [Spine ; Oxford Mus.] 



brevispinus, Agassiz. v. Nemacanthus brevis. 



filifev, Agassiz. v. Nemacanthus monilifer. 



minor, J. W. Davis, Quart. Journ. Geol. Soc, vol. xxxvii, iSSr, 

 p. 419, pi. xxii. f. 5. 

 LOC. Rhaetic ; Wainlode Cliff. [Spine ; Geol. Soc. London.] 



monilifer, L. Agassiz, Poiss. Foss., vol. iii (1837), p. 26, pi. vii, 

 f. 10-15; J- Morris, Cat. Brit. Foss., 1854, p. 334; J. W. 

 Davis, Quart. Journ. Geol. Soc, vol. xxxvii, 1881, p. 418. 

 Nemacanthus jilifer, L. Agassiz, Poiss. Foss., vol. iii (1S37), 

 p. 26, pi. vii, f. 9 ; J. YV. Davis, Quart. Journ. Geol. Soc, 

 vol. xxxvii, 1881, p. 418. [Spine ; Bristol Mus.] 

 LOC. Rhaetic ; Aust Cliff. [Spines ; Bristol Mus.] T. 



pi'iscus, M'Coy. v. Cosmacanthus priscus. 



