LAMNID^, 
375 
OdontcMjjis rigkla: Lanina rigida, J. Probst, tom. cit. p. 152, 
pi. ii. figs. 53-58. — llolasse ; Baltringen. 
Odontaspis van-dm-hroedci, T. C. Winkler, Archiv. Mus. Teyler,, 
vol. V. (1880), p. 77, woodcut fig. 3. — Upper Eocene ; 
Limbourg, Belgium. 
Odontaspis verticalis, L. Agassiz, Poiss. Foss, vol. iii. (1843), 
p. 294, pi. xxxvii. a. figs. 31, 32; E. W. Gibbes, Journ. 
Acad. Nat. Sci. Philad. [2] vol. i. (1849), p. 198, pi. xxvi. 
figs. 124—127 ; W. Dames, Sitzungsb. k. prcuss. Akad. 
Wiss. Berlin, 1883, pt. i. p. 145, pi. iii. figs. 8-10. Otodus 
minutissimus, T. C. Winkler, Archiv. llus. Teyler, vol. iii. 
(1874), p. 297, pi. vii. fig. 2, and ihid. vol. iv. (1876), 
p. 23 ; Archiv Vereins Er. d. Naturgesch. Mecklenburg, 
vol. xxix. (1875), p. 110. Otodus parvus, T. C. Winkler, 
he. cit. vol. iv. (1876), p. 7, pi. i. figs. 5, 6 . Odontaspis 
mourhni, T. C. Winkler, loc. cit. vol. v. (1880), p. 77, 
woodc. figs. 1, 2. Odontaspis minutissimus, F. Noetling, 
Sitzungsb. naturf. Freunde Berlin, 1886, p. 16. — Eocene; 
Belgium and South Carolina. Miocene; Mecklenburg. 
Lower Tertiary ; Egypt. (?) London Clay ; Sheppey, 
England. [S 3 'nonymy according to W. Dames, he. cit.'\ 
The following is probably a posterior tooth of Odontaspis : — 
O.vi/tes obliqua, C. G. Giebel, Fauna d. Vorwelt, Fische (1847), 
p. 364. — Upper Eocene; Siildorf, Magdeburg. 
Genus ALOPECIAS, MiiUer & Henle. 
[Syst. Beschreib. Plagiostom. 1841, p. 74.] 
Second dorsal fin and the anal very small. Caudal fin extremely 
elongated, with a pit at its root ; no keel on the side of the taU. 
Teeth equal in both jaws, of moderate size, compressed, triangular 
and not serrated. 
The teeth of this genus are not readily distinguishable from those 
of Oxgrhina ; the following species, however, are recognized, though 
the first two are very doubtful : — 
Alopecias acuarius, J. Probst, Wiirtt. Jahresh. vol. xxxv. (1879), 
p. 140, pi. ii, figs. 76, 77. — Molasse; Baltringen, Wiir- 
temberg. 
(^■)Ahpecias gigas, J. Probst (in part), tom. cit. p. 141, pi. ii. figs. 
69-71 (non figs. 72-75). — Molasse; Baltringen. [See also 
Oxgrhina desorii, synonymy, p. 383.] 
