CAKCHABIID^. 
455 
Sphi/ma magna, E. D. Cope, Proc. Acad. Nat. Sci. Philad. 1867, 
p. 142. — Miocene; United States. 
A tooth very suggestive of this genus, from the Tertiary of Java, 
is also described by K. Martin, Samml. geol. Eeichs-Mus. Leiden, 
[1] vol. iii. (1883), p. 25, pi. ii. fig. \ (i (Galeoctrdo, sp. ?). Doubtful 
teeth, probably from the Swiss Molasse, are also recorded, without 
description, imder the name of Sphgriia duJtia, L. Agassiz, tom. cit. 
p. 235. 
The so-called Sphyrna dentieulata, Munster (Agassiz, tom. cit. 
p. 236, pi. xxvi.u. figs. 60, 61), is founded upon the anterior cone 
of a tooth of Nutidanus primigenitu of Tertiary age. Sphyma 
subserruta, Munster (Beitr. Petrefakt. vii. (1846), p. 21, pi. ii. 
fig. 17), from the Miocene of Neudbrfl, Vienna, is evidently founded 
upon a tooth of Squatina, as remarked by Probst {tom. cit. p. 152). 
Some vertebrae from the Swiss Molasse are also assigned to 
Sphyrmt,\>y C. Hasse, Natiirl. Syst. Elasmobr., Besond. Theil(1882), 
p. 275, pi. xxxix. fig. 26. 
Genus MUSTELUS, Cuvier. 
[Regne Animal, vol. ii. 1817, p. 127.] 
Syn. GaJeorhinut, II. D. de Blainville, Bull. Soc. Philom. 1816, p. 121 
(incomplete definition). 
Snout short ; mouth crescent-shaped, with weU-dcveloped, long 
labial folds. Spiracles minute. No pit at the root of the caudal 
fin ; second dorsal fin scarcely smaller than the first. Teeth small, 
numerous, obtu.se or with indistinct cusps, pavement-like, and 
similar in both jaws. 
Mtistelug stefanii, E. Lawley, Nuovi Studi Pesci, etc. Colline 
Toscane (1876), p. 35, pi. ii. fig. 3. — PEocene; Orciano, 
Tuscan)'. 
Vertebrae from the Danian Beds of Ciply and the Crag of Ant- 
werp, Belgium, are referred to Mustelus by C. Hasse, Natiirl. Syst. 
Elasmobr., Besond. TheU (1882), p. 283, pi. xl. figs. 13-15. 
The following vertebrae are referable to members of the family 
Carchariidae, hut the generic determination of these fossUs is some- 
what uncertain : — 
35611 a. Eight small examples, labelled Carcharias by Prof. Dr. 
Carl Hasse ; Eocene, Alabama. 
PreSinted by Prof. J. TV. Malht, 1859. 
