PISCES. 49 



CTENACANTHUS, L. Agassiz, Poiss. Foss., vol ii (1837), p. 10. 

 [Probably founded on dorsal fin-spines of Orodus, and, if 

 so, Orodus becomes a synonym.] 



cequistriatus, Davis, v. Sphenacanthus aequistriatus. 



arcuatus, L. Agassiz, Poiss. Foss., vol. iii (1843), p. 177 (name 

 only). 

 LOC. L. Carb. Limest. ; Armagh. [Spine ; unknown.] 



brevis, L. Agassiz, Poiss. Foss., vol. iii (1837), p. 11, pi. ii, f. 2 ; 

 J. Morris, Cat. Brit. Foss., 1854, p. 323 ; J. W. Davis, Trans. 

 Roy. Dublin Soc. [2] vol. i (1883), p. 3^7, pi. xliii, f. 3. 

 Ctenacanthus limaformis, J. W. Davis, ibid., p. 339, pi. xliv, f. 5. 



[Much-broken spine ; Brit. Mus.] 

 LOC. L. Carb. Limest ; Bristol (non 'Armagh'). [Spine ; Bristol 

 Mus.] 

 costellatus, Traquair. v. Sphenacanthus costellatus. 

 crenatus, F. M'Coy, Brit. Palaeoz. Foss. (1855), p. 624, pi. iii I, f. 31. 

 Ctena-anthus crenulatus, L. Agassiz, Poiss. Foss., vol. iii 

 (1843), P- *77 (name only) ; J. W. Davis, Trans. Roy. Dub- 

 lin Soc. [2] vol. i (1883), p. 345, pi. xlv, f. 6. 

 LOC. L. Carb. Limest. ; Armagh. [Spine ; Woodwardian Mus.] 

 crenulatus, Agassiz. v. Ctenacanthus crenatus. 



denticulatus, F. M'Coy, Ann. Mag. Nat. Hist. [2] vol. ii, 1848, 

 p. 116, and Brit. Palaeoz. Foss. (1855), p. 625, pi. iii K, f. 16 ; 

 J. Morris, Cat. Brit. Foss., 1854, p. 323 ; J. W. Davis, Trans. 

 Roy. Dublin Soc. [2] vol. i (1883), p. 338, pi. xliv, f. 4. 

 LOC. L. Carb. ; Monaduff, Drumlish. L. Carb. Limest. ; Armagh 

 and Shropshire. [Spine ; Woodwardian Mus.] 



distans, M'Coy. v. Acondylacanthus distans. 



heterogyrus, L. Agassiz, Poiss. Foss., vol. iii (1843), P- *77 



(name only) ; F. M'Coy, Brit. Palaeoz. Foss. (1855), p. 625, 



pi. iii I, f. 32 ; J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i 



(1883), p. 336, pi. xliv, f. 1-3. 



LOC. L. Carb. Limest. ; Armagh. [Spine ; Woodwardian Mus.] 



hybodoides, Egerton. v. Sphenacanthus hybodoides. 



lee vis, J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i (1883), 

 p. 341, pi. xlv, f. 1. [? Acondy/acant/ius.] 

 LOC. L. Carb. Limest. ; Armagh. [Spine ; Brit. Mus.] 

 limaformis, Davis, v. Ctenacanthus brevis. 



major, L. Agassiz, Poiss. Foss., vol. iii (1837), p. 10, pi. iv ; J. 

 Morris, Cat. Brit. Foss., 1854, p. 323 ; J. W. Davis, Trans. 

 Roy. Dublin Soc. [2] vol. i (1883), p. 334, pi. xlii, f. 1, 2. 

 Ctenacanthus tenuistriatus, L. Agassiz, Poiss. Foss., vol. iii 

 (1837), p. 11, pi. iii, f. 7-1 1 ; J. Morris, Cat. Brit. Foss., 

 1854, p. 323; J. W. Davis, Trans. Roy. Dublin Soc. [2] 

 vol. i (1883), p. 335, pi. xliii, f. 1, 2. [Spine ; Bristol Mus., and 

 Brit. Mus.] 



E 



