CAECffABIID.*;. 
453 
Galois by C. Hasse, Natiirl. Syst. Elasmobr., Besond. Theil (1882), 
p. 2CG, pi. xxxTiii. figs. 8-18. 
Teeth of the existing Galeus eanis, Linn., from the Forest Bed of 
Norfolk, are described by E. T. Newton, Ycrtebrata of the Forest 
Bed Series (31era. Geol. Snrv. 1882), p. 130, pi. xix. fig. 7, and the 
striking similarity between these teeth and those of Galeus affinis, 
Probst, is remarked upon. 
Genus SPHYRNA, Bafinesque. 
[Ind. Ittiol. Sicilians, 1810, p. 60.] 
Syn. Cestrorhinus, II. I), de Blainville, Bull. Soc. Philom. 1816, p. 121. 
Zyijmia, G. Cuvier, Begne Animal, vol. ii. 1817, p. 127. 
Anterior portion of the head broad, flattened and laterally elon- 
gated ; eyes situated at the extremities of the lobes. Nostrils 
situated on the front edge of the head ; mouth crescent-shaped ; 
spiracles absent. A pit at the commencement of the caudal fin ; 
the latter with a single notch. Teeth of both jaws similar, oblique, 
with a posterior notch, and margins smooth or serrated. 
When found detached it is impossible to distinguish the teeth of 
this genus with certainty from those of Carcliarias. The following 
species, however, is recognized. 
Spli3rrna prisca, Agassiz. 
1843. Sphyma prisca, L. Agassiz, Poiss. Foss. vol. iii. p. 234, pi. ixvi. a. 
figs, 35-50. 
1844. Sphyrna prisca, P. M. Padroni, Actes Soc. Linn. Bordeaux, 
vol. xiiL p. 284, pi. i. figs. 15, 16. 
1846. Sphyma serrata, G. von Munster, Beitr. Petrefakt. vii. p. 20, 
pi. ii. fig. 18. 
1850. Sphyma prisca, O. G. Costa, Paleont. Regno Napoli, pi. i. p. 112, 
pi. ix. fig. 7. 
(?) 1857. Sphyma prisca, G. G. Gemmellaro, Atti Accad. Gioenia Sci. 
Nat [2] vol. xiii. p. 295, pi. i. a. fig. 6 a, pi. vi. a. fig. 3 a. 
(?) 1858. Sphyma rameti, M. Rouault, Comptes Rendus, vol. xlvii. 
p. 101. 
(?) 1878. Sphyma serrata, J. Probst, Wiirtt Jahresh. vol. xixiv. 
p. 151, pi. i. fig. 45. 
1879. Sphyma prisca, F. Bassani, Atti Soc. Veneto-Trent. Sci. Nat. 
vol. vi. p. 65. 
1882. Sphyma prisca, H. E. Sauvage, Mdm. Soc. Sci. Nat. Saone-et- 
Loire, vol. iv. p. 52. 
1884. Sphyrna prisca, E. Nicolis, Mem. Accad. Agricolt. Arti e Comm. 
Verona, pi. ii. fig. 7. 
1887. Sphyma serrata, K. A. von Zittel, Ilandb. Palseont. vol. iii. 
p. 86, fig. 93. 
