440 
o fa i ff *3 y^uJe^r. i Ci M *? jO 
Teeth have also been assigned to (7. egertoni from the Lower Ter¬ 
tiary of Birket-el-Qurun, Egypt (W. Dames, Sitzungsb. k. prenss. 
Akad. Wiss. 1883, pt. i. p. 142, pi. iii. fig. 5); from the Miocene 
of Naples (0. Gf. Costa, Paleont. Eegno Napoli, pt. ii. (1854- 
56), p. 65, pi. vii. fig. 29); and from the Pliocene of Tuscany (E. 
Lawley, Nuovi Studi Pesci, etc. Colline Toscane, 1876, p. 14, and 
Studi Comp. Pesci foss. coi viv. generi Car char odon, Oxy china , e 
Galeocerclo, 1881, p. 136, pi. i. ( Galeoeerclo ), fig. 2, pi. ii. fig, 1 5 
pi. iii. fig. 7); but the evidence is insufficient to render the deter¬ 
minations certain. The species is retained in Corax by Dames and 
Costa, but assigned to Gcdeocerdo by Lawley, the latter having de¬ 
termined the hollowness of the Italian teeth. 
Carcharias (Pricmo&on) aculeatus (Davis). 
1388. Galeocerdo aculeatus, J. W. Davis, Trans. Eoy. Dublin Soc. [2] 
Y/B njt.L ^ dC'lifhe** aA.AA^J. f Ptlld’tnJr-, 
Type. Detached teeth; Canterbury Museum, Christchurch, New (PCM.^.y, 
Zealand. 
Lower teeth with a narrow elevated crown suddenly expanding 
at its base over a broad root: marginal serrations especially large 
and prominent at the base. 
Form. &f Loc. Pareora and Oamaru Systems: New Zealand. 
/“ i ^/'cAtkC. - 
42019. Two teeth, one almost destitute of serrations, and evidently 
referable to the symphysis ; Canterbury, New Zealand. 
Presented by J. Davies Enys, Esq., 1870. 
P. 2308 b. Large imperfect tooth; Otatara series, Trelissic, Canter¬ 
bury. By exchange , 1876. 
The following detached teeth of the subgenus P rionodon are also 
preserved in the Collection :— 
10556. High-crowned, oblique upper tooth, prominently serrated, 
and deeply notched posteriorly; Cretaceous, New Jersey, 
E.S.A. Mantell Coll. 
47020. Three teeth, resembling those named Galeocerdo egertoni by 
Lawley ; Pliocene, Orciano, Tuscany. Purchased , 1875. 
47009. Lower tooth, in form suggestive of the subgenus Aprionodon , 
but with finely serrated coronal edges; Phosphate Beds, 
South Carolina. Purchased , 1876. 
Teeth of the subgenus Prionodon have also been described under 
the following names, but there are no examples in the Collection :— 
Carcharias (Prionodon) acutus , L. Agassiz, Poiss. Loss. vol. iii. 
