Fossil Fish Remains. 273 



Family Carchariidae. 



Genus Galeocerdo, Miiller and Henle. 



Galeocerdo davisi, nom. mut. 



Notidanus marginalis, Davis, 1888. Trans. Roy. Dublin Soc, 

 ser. 2, vol. iv., p. 34, pi. 6, f. 7 (non. f. 8). 



Galeocerdo sp., A. S. Woodward, 1889. Cat. Foss. Fishes, 

 Brit. Mus. Nat. Hist., pt. 1, p. 167. 



Locality and Horizon. — Clays of the coastal sections near the 

 Gellibrand River (Pritchard Coll.), 3 miles west of the mouth 

 of the Gellibrand River (Geol. Surv. Vict., A.W. 9, Nat. Mus. 

 Coll.). — Balcombian. 



Grange Burn, near Hamilton (presented by A. A. Kelley, 

 Esq., Nat. Mus. Coll. ; also Pritchard Coll.). Beaumaris, Port 

 Phillip (Dixon Coll.; Pritchard Coll.; Nat. Mus. Coll., pre- 

 sented by the late Mr. W. B. Jennings). — Kalimnan; but as 

 mostly worn probably derived from the Balcombian. 



Obser\'ations. — This species was first figured and described 

 by Davis under the generic name of Notidanus, but, as was 

 subsequently pointed out by A. S. Woodward (30, p. 167), Davis 

 included a tooth of Galeocerdo with his Notidanus, and as the 

 specific name marginal is has been retained for Davis' Notidanus 

 by A. S. Woodward, the Galeocerdo before us may be con- 

 veniently referred to as G. davisi. 



This present form is somewhat intermediate between G. 

 latidens, Ag., and G. aduncus, Ag., the somewhat depressed 

 cusp reminding us of the former and the heavy base of the 

 latter species ; a good distinctive character of G. davisi seems 

 to be the marked regularity of the posterior slope. This form 

 was originally recorded by Davis from the Waipara and the 

 Oamaru Formations of New Zealand and regarded as equivalent 

 to Upper Cretaceous and Oligocene respectively. 



Galeocerdo latidens, Agassiz. 



Galeocerdo latidens, Agassiz, 1843. Poiss. Foss., vol. iii., p. 

 231, pi. 26, tigs. 22, 23. 



Galeocerdo latidens, Ag., Woodward, 1889. Cat. Foss. Fishes, 

 Brit. Mus. Nat. Hist., pt. 1 , p. 444. 



