344 
SELACHII. 
Trigonodus secundus, T. C. Winkler, loc. cit. vol. iv. (1876), p. 20, 
pi. ii. figs. 4, 5.—Bruxellian Eocene; Brussels. 
Trigonodus tertius , T. C. Winkler, loo. cit. vol. iv. (1876), p. 21, 
pi. ii. figs. 6, 7.—Bruxellian Eocene ; Brussels. 
Lanina triplex, F. A. Quenstedt, Handb. Petrefakt. 3rd edit. 
(1882), p. 288, pi. xx. figs. 26.—“Eeuerstein; Mark- 
iscbe Geschiebe.” 
Otodus tricuspis , L. Agassiz, Pois. Eoss. vol. iii. (1843), p. 273, 
pi. xxxvi. fig. 28.—Lower Miocene; Wilhelmshohe, near 
Cassel. 
Orthodon condamyi , H. Coquand, Descr. Geol. Dept. Charente, 
vol. ii. (1860), p. 126.—Upper Cretaceous; Charente, 
Erance. 
Genus PRISTIURUS, Bonaparte. 
[Faun. Ital. vol. iii. 1841, art. 131.] 
Dorsal and anal fins as in Scyllium. A series of small flat spines 
on each side of the upper edge of the caudal fin. Snout much 
elongated. Teeth small, tricuspid.. , . 
Fristim'ixs kassei, sp. nov. P 
1862. Notidanus (young), A. Wagner, Abh. k.bay. Akad. Wiss.,math.- 
phys. Cl. vol. ix. p. 295. 
1882. Pristiurus , C. Hasse, Natiirl. Syst. Elasmobr., Besond. Theil, 
p. 255, pi.'xxxv. figs. 45, 46. 
Type. Nearly complete fish; Palaeontological Museum, Munich. 
A very small species, distinguished from the existing P. melcino- 
stomus by the relatively greater size of the tail. The second dorsal 
fin is situated above the hinder part of the anal; and the length of 
the tail behind the second dorsal is equal to that of the trunk in 
advance of this fin. 
Form. § Loc. Lower Ximmeridgian (Lithographic Stone): Bavaria. 
38003. Plaster cast of type specimen, figured, without specific name, 
by C. Hasse, op. cit. ; Eichstadt. The snout is indicated 
as being very obtuse, and, if confirmed, this feature will 
necessitate a slight modification in the accepted definition 
of the genus. Purchased , 1864. 
Genus MRSITRIA, Kramberger. 
[Pad jugoslav. Akad. vol. lxxii. 1885, p. 53.] 
First dorsal fin above or behind the pelvics; anal fin long. Tail 
