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P. 5770. Abraded tooth, of the form named Lamna huttoni, Davis; 
formation unknown, New Zealand. 
42019. Five fragmentary small teeth ; formation unknown, Canter¬ 
bury, New Zealand. 
Presented by J, Davies Enys, Esq., 1870. 
The following is one of the hindermost teeth, probably of this 
species :— 
P. 5743. Small tooth, with three pairs of lateral cones; Heersian 
Beds, Orp-le-Grand, Belgium. 
Presented by G. F. Harris, Esq., 1888. 
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Odontaspis contortidens. Agassiz. A 
rThrrk - <r- /tu^ pt-arcu^jkru^, m*i°) 
1843. Lamna ( Odontaspis ) contortidens, L. Agassiz, Poiss. Foss. vol. iii. 
p. 294, pi. xxxvii. a. figs. 17-23. 
1849. Lamna ( Odontaspis) contortidens, E. Sismonda, Mem. R. Accad. 
Sci. Torino, [2] vol. x. p. 48, pi. ii. figs. 25-28. 
1849. Lamna ( Odontaspis ) contortidens, R. W. Gibbes, Journ. Acad. 
Nat. Sci. Philad. [2] vol. i. p. 197, pi. xxvi. fig. 119. 
1857. Lamna ( Odontaspis) contortidens, G. G. Gemmellaro, Atti Accad. 
Gioenia Sci. Nat. [2] vol. xiii. p. 320, pi. i. a. fig. 13 a (? pi. vi. a. 
f. 18-20). 
1864. Lamna ( Odontaspis ) contortidens, O. G. Costa, Ann. Accad. Aspir. 
Nat. Napoli, [3] vol. iii. p. 30, pi. v. fig. 2. 
1877. Lamna contortidens, A. Locard, Faune Terr. Tert. Moy. Corse, p. 7. 
1879. Lamna ( Odontaspis ) contortidens, J. Probst, Wiirtt. Jahresh. 
vol. xxxv. p. 144, pi. ii. figs. 33-39. - O - ** <*~c- h H- Mx?» 
1879. Odontaspis contortidens , F. Bassani, Atti Soc. Veneto-Trent. Sci. 
Nat. vol. vi. p. 57. 
1882. Odontaspis contortidens, H. E. Sauvage, Mem. Soc. Sci. Nat. 
Saone-et-Loire, vol. iv. p. 50. 
Type. Detached teeth, fit ).£*• . 
Teeth slender, with delicate longitudinal striae upon the inner 
coronal face, and only distinguished from those of Odontcisqns elegans 
by the pronounced sigmoidal curvature of those occupying the ante¬ 
rior portion of the jaw. 
The teeth at least of the most anterior pair in the upper jaw of 
all species of Odontaspis exhibit considerable sigmoidal curvature; 
but in 0. contortidens all the front teeth seem to be thus character¬ 
ized, and in such the inward projection of the base of the root is 
much greater than in 0. elegans. By Le Hon 1 the species is placed 
with 0. elegans, and it does appear to be the representative of this 
1 Prelim. Mem. Poiss. Tert. Belg. 1871, p. 12. 
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