430 
SELAOHII. 
Cetorhinus duponti, Hasse. 
1882. Selache duponti, C. Hasse, Natiirl. Syst. Elasmobr., Besond. 
Theil, p. 241, pi. xxxii. figs. 6-8. 
Type. Detached vertebra ; Brussels Museum. 
A provisional species founded upon vertebrae very similar to those 
of the living Cetorhinus maximus, and in which the calcified con¬ 
centric rings are very numerous. 
Form. Sf Log. Pliocene (Crag): Antwerp, Belgium. 
P. 2316. Half of a typical vertebra, 0-095 in diameter, in section. 
By exchange, 1883. 
The following extinct species are also recognized upon imperfect 
evidence:— 
Cetorhinus auratus : Selache aurata , R. Lawley, Atti Soc. Tosc* 
Sci. Hat. vol. iv. (1879), p. 109 ; E. Sacco, Bull. Soc. Geol. 
France, [3] vol. xiv. (1886), p. 364. Hannovera aurata, 
P. J. van Beneden, Bull. Acad. Roy. Sci. Belg. [2] vol. xxxi. 
(1871), p. 504, pi. ii. fig. 16; R. Lawley, Huovi Studi, 
Pesci etc. Colline Toscane (1876), p. 44, pi. i. fig. 17 c. 
Teeth resembling Selache maxima, R. Lawley, op. cit. p. 89, 
pi. i. fig. 11.—Pliocene; Belgium and Italy. [Founded 
upon dermal appendages of gill-arches (see A. Hannover, 
Overs, k. Danske Yidensk. Selsk. Eorhandl. 1867, p. 46, 
woodcut).] 
Cetorhinus glauconiticus: Selache glauconitica , E. Noetling, Abh. 
Geol. Specialk. Preussen u. Thiiring. Staaten, vol. vi. pt. 3 
(1885), p. 49. Selache sp., C. Hasse, Pakeontogr. vol. xxxi. 
(1884), p. 10, pi. ii. fig. 18.—Upper Eocene ; Palm- 
nicken and Samland, Prussia. [Founded upon a vertebra.] 
Cetorhinus vetustus: Selache vetusta , O. G. Costa, Paleont. Regno 
Napoli, pt. ii. (1854-56), p. 58, pi. vii. figs. 59, 63 (60).— 
Miocene; Naples. [Tooth.] 
The so-called Selache manzonii , R. Lawley ( loc. cit. vol. v. (1881), 
p. 167, woodcuts), from the Miocene of Monte Titano, Republic of 
San Marino, is founded upon a very doubtful tooth. 
Large dermal spines identical with those affixed to the claspers of 
the existing male Cetorhinus maximus are described from the Crag 
of Antwerp by P. J. van Beneden, Bull. Acad. Roy. Sci. Belg. [2] 
vol. xlii. (187(6), p. 294 (with plate). The following are similar 
specimens fronitht) EWgUkh Crag :— 
