160 PISCES. 



Ctenacanthus denticulatus, F. McCoy, A. M. N. H. ser. 2, n 



(1848), p. 116, and Contrib. Brit. Pal. (1854), p. 11, and Brit. 



Palaeoz. Foss. (1855), pi. iii K, f. 16, p. 625. J. W. Davis, Trans. 



Roy. Dublin Soc. ser. 2, 1 (1883), pi. xliv, f. 4, 4 a, p. 338. Lower 



Carboniferous; Monaduff. [Spine.] 

 C. distans, v. Acondylacanthus distans. 



C. heterogyrus, Agassiz, F. McCoy, Brit. Palseoz. Foss. (1855), 

 pi. iii I, f. 32, (33 missing), p. 625. Carboniferous Limestone ; 

 Armagh. [Spine.] 



Ctenoptychius serratus (Owen), F. McCoy, Brit. Palaeoz. Foss. 

 (1855), pi. iii I, f. 21 23, p. 626. Carboniferous Limestone; 

 f. 21, 22/rom Armagh, f. 23/rom Derbyshire. [Teeth.] 



Deltodus aliformis (McCoy), J. W. Davis, Trans. Roy. Dublin 

 Soc. ser. 2, I (1883), pi. liii, f. 12, p. 431. Pcecilodus aliformis, 

 F. McCoy, A. M. N. H. ser. 2, n (1848), p. 129, and Contrib. 

 Brit. Pal. (1854), p. 24, and Brit. Palaeoz. Foss. (1855), pi. iii G, 

 f. 10 (upper figure), p. 638. Carboniferous Limestone ; Derby- 

 shire. [Tooth.] 



D. sublaevis (Agassiz). Pcecilodus sublcevis, F. McCoy, Brit. Palseoz. 



Foss. (1855), pi. iii I, f. 79, p. 640. Pcecilodus parallelus, F. 

 McCoy, ibid. (1855), pi. iii I, f. 6, 6 a, p. 640. Carboniferous 

 Limestone; Armagh. [Teeth.] 



Deltoptychius acutus (Agassiz). Cochliodus acutus, F. McCoy, 



Brit. Palaeoz. Foss. (1855), pi. iii I, f. 24, 24 a, p. 621 (missing). 



Cochliodus compactus, R. Owen, G. M. iv (1867), pi. iv, f. 1. 



Carboniferous Limestone ; Armagh. [Teeth.] 

 Dicrenodus dentatus (McCoy). Pristicladodus dentatus, F. 



McCoy, Brit. Palaeoz. Foss. (1855), pi. iii G, f. 2, 3, p. 642. 



Carboniferous Limestone ; Derbyshire. [Tooth.] 



D. goughi (McCoy). Pristicladodus goughi, F. McCoy, Brit. 

 Palasoz. Foss. (1855), pi. iii K, f. 11, p. 643. J. W. Davis, 

 Trans. Roy. Dublin Soc. ser. 2, I (1883), pi. xlix, f. 27, p. 385. 

 Carboniferous Limestone ; Kettlewell, Kendal. [Tooth.] 



Diplacanthus gibbus, v. D. striatus. 



Diplacanthus longispinus, Agassiz. D. perarmatus, F. McCoy, 

 A. M. N. H. ser. 2, n (1848), p. 301, and Contrib. Brit. Pal. 



