168 
SELACHII. 
Notidanus thevenardi, E. Delfortrio, Actes Soc. Linn. Bordeaux, 
vol. xxxii. (1878), p. 256, woodcuts. — Faluns; St. Mcdard, 
Girondo, France. [Lower median tooth.] 
Notidanus urcianensis, R. Lawley, loe. cit. vol. iv. (1879), p. 198. 
— Pliocene ; Tuscany. [Lower median tooth.] 
Of the above species, those founded upon lower median teeth are 
especially doubtful. The so-called Notidanus amalthel, Oppel ‘, from 
the Lias of Wiirtembcrg and Yorkshire, has been recorded upon the 
evidence of indeterminable fragments ; and the present writer has 
been unable to confirm Munster’s determination “ of a tooth of this 
genus from the same horizon. A tooth from the Oxfordian of 
Switzerland ascribed to Notidanus by PI. Favre ’ appears also to be 
doubtfully determined, and most likely pertains to ilyhodus. 
The caudal region of a Selachian from the Lithographic Stone of 
Bavaria, named Adlopos vow/neri by Agassiz (Poiss. Foss. vol. iii. 
1843, p. 377), is also referred to AbdefowMS by A. Wagner, Abh. k.- 
bay. Akad. Wiss. math.-phys. Cl. vol. ix. p. 296. A nearly complete 
fish, from the Upper Cretaceous of Mount Lebanon, is also described 
under the name of N. yraciUs, 3. W. Davis, Trans. Boy. Dublin Soc. 
[2] vol. iii. p. 470, pi. xiv. fig. 1. The former specimen is preserved 
in the Munich Museum, the latter at liklinburgh. 
Notidanus hiserratm, Munster (Beitr. Petrefakt. v. 1842, p. 66, 
pi. XV. fig. 9), from the Oligocene of the Vienna Basin, is founded 
upon an imperfect tooth of Oaleoesrdo, now in the Munich Museum. 
Some awl-shaped teeth from the “ marls of New Jersey,” appa- 
rently referable to the symph 3 ’'si 8 of the upper jaw of Notidanus, are 
described under the name of Xiphodolamia ensis, J. Leidy, Journ. 
Acad. Nat. Sci. Philad. [2] vol. viii, (1877), p. 252, pi. xxxiv. 
figs. 25-30. 
Genus CHLAMYDOSELACHE, German. 
[Bull. Essex Institute, vol. xvi. 1884, p. 52.] 
Body much elongated, slender ; mouth terminal ; gill-opcnings 
six, with anterior flaps of skin, the first especially large. Dentition 
similar in both jaws, but a median symphysial series of teeth only 
> A. Oppel, Wiirtt. Jahresh. vol. x. (1854), p. 62, pi. i. fig. 1 ; Tate & Blake, 
Yorksh. Lias, 1876, p. 256; A. S. Woodward, Gteol, Mag. [3] vol. iii. (1886), 
pp. 208, 525. The described specimens are respectively in the Museums of 
Munich and Whitby. 
’ Beitr. Petrefakt. vi. (1843), p. 55. 
’ M^m. Soc. Pal^ont. Suisse, vol. iii. (1876), p. 16, pi. ii. fig. 1. 
