PISCES. 159 
Survey, 1866), pls. ix, x, p. 39. Kimeridge Clay: Cottenham. 
[Skull and portion of trunk.] 
Coccosteus decipiens, Agassiz. C. microspondylus, F. McCoy, 
A. M. N. H. ser. 2, 11 (1848), p. 298, and Contrib. Brit. Pal. 
(1854), p. 30, and Brit. Paleoz. Foss. (1855), pl. uc, fi 4, 
p. 602. Old Red Sandstone; Orkney. [Imperfect skeleton. ] 
C. pusillus, F. McCoy, A. M. N. H. ser. 2, 1 (1848), p. 298, 
and Contrib. Brit. Pal. (1854), p. 30, and Brit. Palseoz. Foss. 
(1855), pl. 1c, f. 5, 5 a, p. 603. Old Red Sandstone ; Orkney. 
[Imperfect skeleton.] Presented by the Rev. J. H. Pollexfen. 
C.? trigonaspis, F. McCoy, A. M. N. H. ser. 2, m (1848), 
p- 299, and Contrib. Brit. Pal. (1854), p. 31, and Brit. Palzeoz. 
Foss. (1855), pl. u ©, f. 6, 6 a, p. 603. Old Red Sandstone ; 
locality unknown. [Imperfect skeleton. | 
C. microspondylus, v. Coccosteus decipiens. 
C. pusillus, v. Coccosteus decipiens. 
C.? trigonaspis, v. Coccosteus decipiens. 
Cochliodus acutus, v. Deltoptychius acutus. 
C. compactus, v. Deltoptychius acutus. 
Cochliodus contortus, Agassiz, F. McCoy, Brit. Paleoz. Foss. 
(1855), p. 622. R. Owen, G. M. Iv (1867), pl. iii, f 1, 2. 
J. W. Davis, Trans. Roy. Dublin Soe. ser. 2, 1 (1883), pl. lii, 
f. 6, p. 421. Tomodus converus, R. Owen (errore), G. M. Iv 
(1867), pl. iv, f. 2—5, p. 62. Carboniferous Limestone; Armagh. 
[Jaw.] 
C. magnus, v. Psephodus magnus. 
C. oblongus, v. Streblodus oblongus. 
C. striatus, v. Xystrodus striatus. 
Conchodus ostreeformis, I*. McCoy, A. M. N. H. ser. 2, 1 (1848), 
p- 312, and Contrib. Brit. Pal. (1854), p. 44, and Brit. Paleoz. 
Foss. (1855), pl. 1 c, f. 7, p. 593. Old Red Sandstone ; Scat 
Craig, Elgin. ['Tooth.] 
Ctenacanthus crenatus, F. McCoy, Brit. Palzoz. Foss. (1855), 
pl. i 1, f. 31, 31 a, b, p. 624. C. crenulatus, Agassiz, J. W. 
Davis, Trans. Roy. Dublin Soe. ser. 2, I (1883), pl. xlv, f. 6, 
6 a, p. 345. Carboniferous Limestone ; Armagh. [Spine.] 
C. crenulatus, v. Ctenacanthus crenatus. 
