PISCES. 41 



CCELOCEPHALUS, L. Agassiz, Poiss. Foss., vol. v, pt. ii (1843), 

 p. 139, and Rep. Brit. Assoc, 1844 (1845), p. 308 (name 

 only). 



salmoneus, L. Agassiz, ibid. (1843), p. 139, and ibid, (1845), p. 308 

 (name only). 

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



CSLODUS, J. J. Heckel, Denkschr. k. k. Akad. Wiss. Wien, Math.- 

 naturw. CI., vol. xi, 1S56, p. 202. [Name universally adopted, 

 but preoccupied by Ccelodon, Lund, 1839.] 



? Acrotemnus, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), 

 p. 202. 



angustus (Agassiz), K. A. von Zittel, Handb. Palseont., vol. iii 



(1887), p. 249: A. S. Woodward, Proc. Geol. Assoc, vol. x 



(1888), p. 307. 

 Gyrodus angustus, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), 



pp. 235, 246, pi. Ixvi rt, f. 14, 15 ; J. Morris, Cat. Brit. Foss., 



1854, p. 327 ; F. Dixon, Geol. Sussex, 1850, p. 370, pi. xxx, 



f. 14, pi. xxxiii, f. 1. 

 Pycnodus angustus, L. Agassiz, Poiss. Foss., vol. ii, pt. ii 



(1843), P- *99 (name onlyj; J. Morris, Cat. Brit. Foss., 1854, 



p. 342. 

 Pycnodus e/ongatus, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), 



p. 199. 

 LOC. Chalk ; Sussex and Kent. [Series of teeth ; Brit. Mus. 



(pars).] 



cretaceus (Agassiz), K. A. von Zittel, Handb. Palasont., vol. iii 



(1887), p. 249 ; A. S. Woodward, Proc. Geol. Assoc, vol. x 



(1888), p. 308. 

 Pycnodus cretaceus, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), 



p. 198, pi. lxxii «, f. 60; J. Morris, Cat. Brit. Foss., 1854, 



p. 342. 

 LOC. L. Chalk ; Kent. [Mandib. teeth ; olim Cumberland Coll.] 



elllpticus, P. M. G. Egerton, Geol. Mag. [2] vol. iv, 1877, p. 49, 

 pi. iii, f. I. 

 LOC. Gault ; Folkestone. [R. mandib. dentition ; Brit. Mus.] 



? faba (Agassiz), K. A. von Zittel, Handb. Palaeont., vol. iii (1887), 

 p. 249 ; A. S. Woodward, Proc. Geol. Assoc, vol. x (1888), 

 p. 308. 



Acrotejnnus faka, L. Agassiz, Poiss. Foss., vol. ii, pt. ii (1843), 

 p. 203, pi. Ixvi a, f. 16-18 ; J. Morris, Cat. Brit. Foss., 1854, 

 p. 316. T. (Acrotemnus.) 



LOC. Chalk ; Sussex. [Associated teeth ; Brit. Mus.l 



g'yrodoides, P. M. G. Egerton, Geol. Mag. [2] vol. iv, 1877, p. 52, 

 pi. iv, f. 3. 

 LOC. U. Grtensand ; Pinney Bay, Dorsetshire. [Vomer ; Brit. 



Mus.] 



