LAMJflD^. 383 
1849. Oxxjrliina desoni, E. W. Gibbes, Journ. Acad. Nat. Sci. Philad. 
[2] vol. i. p. 203, pi. xxvii. figs. 109-171. 
1849. O.ryrhina wilsoni, R. W. Gibbes, ibid. p. 203, pi. xxvii. figs. 172, 
173. 
1802. Oxyrhina denorii, 1*. Gervais, Zool. et Pal. Fran?, pi. Ixxv. fig. 2. 
18 o4-30. Oxj/rhtna wUsonii, O. G. Costa, Paleont. Regno Napoli, pt. ii. 
pl. vii. fig. 12. 
1864-50. Oxyrhina desorii, O. G. Costa, op. dt. pt. ii. pl. vii. fig. 13. 
(.'') 1857. O.ryrhina desorii, G. G. Gemmellaro, Atti .\ccad. Gioenia Sci. 
Nat. [2] vol. xiii. p. 315, pl. vi. a. figs. 12, 13. 
1857. Lamna bjeUii, G. G. Gemmellaro, tom.cil. p. 319, pl. vi. a. fig. 17. 
1 8ij7. Lamna inaquilateralis, G. G. Gemmellaro, tom. cit. p. 319, pl. vi. a. 
fig. 22. 
1881. Oxyrhina incerta, G. Michelotti, Miocfine Inf. Italie Septeutr. 
(Mdm. Soc. Holland. Sci., Haarlem), p. 144, pl. xiv. figs. 10-12. 
1861. Oxyrhina desorii, G. Michelotti, op. cit. p. 145, pl. xiv. figs. 13-16. 
1803. Oxyrhina dcsori, K. E. Schafhautl, Siid-Bay. Leth. Geogn. p. 242, 
pl. Ixii. fig. 7. 
1871. O.ryrhina gracilis, II. Le Hon, Prelim. Mdm. Poiss. Tert. Belg. 
p. 11 (woodcut). 
18/0. 0.ryrhina desorii, R. Lawley, Nuovi Studi Pesci etc. Colline 
Toscane, p. 29. 
1870. Lamna lyellii, R. Lawley, op. cit. p. 32. 
1877. O.ryrhina desorii, A. Locard, Faune Terr. Tert. Moy. Corse, p. 4. 
1877. Oxyrhina desorii, K. Miller, Das Molassemeer Bodenseegeg. 
p. 00, pl. iii. fig. 74. 
1879. Oxyrhina desorii, J. Probst, Wiirtt. Jahresb. vol. xxxv. p. 131, 
^ pl. ii. figs. 7-13. 
1879. Alojxedas gigas, J. Probst, ihid. p. 141, pl. ii. figs. 72-75 (non 
figs. 69-71). 
1881. Oxyrhina desorii, R. Lawley, Studi Comp. Pesci foss. coi viv. 
generi Carcharodon, 0.ryrhina, e Galeocerdo, p. 77, pis. 2, 3 (Oxy- 
rhino). 
1885. O.ryrhina xiphodon, F. Noetlirg, Abb. Geol. Specialk. Preussen u. 
TbUriug. Staaten, vol. vi. pt. 3, p. 60, pl. iii. 
'^ype. Detached teeth. 
Anterior teeth narrow, much elevated, and robust ; crown much 
curved inwards, the outer coronal face nearly flat, the inner very 
convex ; root with two elongated branches, diverging at an acute 
s.ngle. Lateral teeth more compressed, with a shorter root having 
more divergent branches ; crown narrow, the cutting-edges in most 
cases graduaUy diverging to the extremities of the base, and the 
apex rarely reflexed. 
The dentition of this species only diflers from that of the existing 
0. spaUanzanii in the less curvature of the lateral teeth. 
Form. ^ Loc. Upper Eocene : Prussia, Italy, Alabama, and South 
