56 BRITISH FOSSIL VERTEBRATA. 
CYTENOPTYCHIVS (continued)— 
tripartitus (Davis), A. S. Woodward, Cat. Foss. Fishes B. M., 
pt. i, 1889, p. 54. 
Petalodopsis tripartitus, [-is] J. W. Davis, Trans. Roy. Dublin 
Soc. [2] vol. 1 (1883), p. 499, pl. Ix, f. 6, and Quart. Journ. Geol. 
Soc., vol. xl, 1884, pl. xxvi, f. 16. 'T. (Petalodopsis, Davis.) 
Loc. Yoredale Rocks; Wensleydale. [Tooth ; York Mus.] 
anilateralis, T. P. Barkas. v. Euctenius unilateralis. 
sp., T. P. Barkas, 1869. v. Euctenius unilateralis. 
CURTODUS, Sauvage. v. Asteracanthus. 
CYATHASPIS, E. R. Lankester, Rep. Brit. Assoc., 1864 (1865), 
Sect., p. 58, and Fishes O. R. Sandst., pt. i (Pal. Soc., 1868), 
p. 26. 
banksi (Huxley and Salter), [-ii] E. R. Lankester, Fishes O. R. 
Sandst., pt. i (Pal. Soc., 1868), p. 26, pl. ii, f. 9-11, pl. iv, f. 6. 
Pteraspis banksit, T. H. Huxley and J. W. Salter, Quart. Journ. 
Geol. Soc., vol. xii, 1856, p. 100, pl. ii, f.2; T. H. Huxley, 
Quart. Journ. Geol. Soc., vol. xiv, 1858, p. 274, pl. xv. 
Loc. Downton Sandst.; Herefordshire. [Head-shield.] 'T. 
? symondsi, E. R. Lankester, Rep. Brit. Assoc., 1864 (1865), 
Sect., p. 58, and Fishes O. R. Sandst., pt. i (Pal. Soc., 1868), 
p. 27,spl. vi; £5. 
Loc. L. Old Red Sandst. (Cornstones); Herefordshire. [Inter- 
nal cast of head-shield ; Mus. Pract. Geol.] 
CYBIUM, Cuvier, Régne Animal, ed. 2, vol. ii, 1829, p. 199. 
macropomum, L. Agassiz, Poiss. Foss., vol. v, pt. i (1843), p. 62, 
pl. xxvi, f. 1-3 ; J. Morris, Cat. Brit. Foss., 1854, p. 324. 
Loc. London Clay ; Sheppey. [Head ; Paris Mus.] 
CYCLARTHRWS, L. Agassiz, Poiss. Foss., vol. iii (1843), p. 382. 
macropterus, L. Agassiz, #i/., p. 382, pl. xliv, f. 1; J. Morris, 
Cat. Brit. Foss., 1854, p. 324. 
Loc. L. Lias; Lyme Regis. [Pectoral fin; Bristol Mus.] T. 
CYCLOPTYCHIUS, J. Young (ex T. H. Huxley), Rep. Brit. 
Assoc., 1865 (1866), p. 318; W. J. Barkas, Monthly Rev. 
Dental Surgery, vol. ili, 1875, p. 500. 
carbonarius, J. Young (er T. H. Huxley), zé7d., p. 319; R. H. 
Traquair, Geol. Mag. [2] vol. i, 1874, p. 241, pl. xii; J. Ward, 
[Proc.] N. Staffs. Nat. Field Club, 1875, p. 240, and Trans. 
N. Staffs. Inst. Mining Engin., vol. x, 1880, pl. v. f. 3-5. 
Cycloptychius, A, Hancock and T. Atthey, Ann. Mag. Nat. Hist- 
[4] vol. i, 1868, p. 362; T. P. Barkas, Coal Meas. Palzont. - 
1873, p. 36, f. 140. 
Loc. Coal- Meas. (Deep-mine Ironstone) ; Longton, Stafford- 
shire. Coal-Meas.; Newcastle-upon-Tyne. [Fishes; J. 
Ward Coll.] 
ene 
