GTMNODONTID^. 
57o 
pi. viii. fig. 13. HejptadAodon echinus^ H. G. Bronn, Leth. 
Geogn. ed. 3, yoI. iii. (1855), p. 677.—Upper Eocene; 
Monte Postale, Italy. [Type species of so-caUed 
Enneodon or Heptadiodon, showing no clear differences 
irom. Diodon. Imperfect fish; Zigno Coll., University of 
Padua.] 
Diodon lieterodon, A. Portis, Joe. cit. 1889, p. 363. Gpnnodus 
^diodon, E. Uelfortrie, Actes Soc. Linn, Bordeaux, vol. 
xxviii. (1871), p. 233, pi, xii. fig. 54. Gymnodus 
lieterodon^ E. Uelfortrie, ibid. p. 234, pi. xii. fig. 57.— 
Upper Miocene ; Gironde, Erance. [Type species of so- 
^ called Gymnodus. Jaw.] 
Diodon hilgendorji.^ A. Portis, Toe. cit. 1889, p. 364. Progymnodon 
hilgendorji, W. Dames, Sitzungsb. k. preuss. Akad. TTiss., 
phys.-math. Cl. pt. i. 1883, p. 148, pi. iii. fig. 13.— 
Lower Tertiary; Birket-el-Qurun, Egypt. [Type species 
of so-called Progymnodon., with anterior dental plates in 
close contact with inner plates. Dental plates ; Royal 
Museum of jS’atural History, Berlin.] 
Diodon incertus, F. Bassani, Atti R. Accad. Sci. Xapoli [2] 
vol, ix. (1899), no. 13, p. 34, pi. iii. figs. 66-68. Pliyllodus 
incertus., G. Michelotti, Rev. et Mag. Zool. vol. xiii. 
(1861), p. 355. Diodon rovasendee, A. Portis, loc. cit. 
1889, p. 371, pi. X. figs. 9-13.—Upper Eocene; Pied¬ 
mont. [Dental plates,] 
Diodon italicus., G. de Alessandri, Mem. R. Accad. Sci. Torino [2] 
^ ,vol. xlv. (1896), p. 286, pi. i. fig. 23, and Mem. Soc. Ital. 
Sci. Hat. n. s. vol. vi. (1897), no. 1, p. 27, pi. i. fig-^— ^ 
Middle Miocene; S. Bartolomeo, Piedmont. TDental_ 
plates ; Rovasenda Collection.] Tise. 
Diodon meristodus, A. Portis, loc. cit. TS89, p. 36o, pi. x. dgs. -- 
3, 4.—Upper Eocene ; Gassino, Piedmont. [Dental plates.] 
^iodon monsegurensis, A. Portis, loc. cit. 1889, p. 363. Gymno- 
g^iis monsegurensis, E. Delfortrie, Actes Soc. Linn. 
* Bordeaux, vol. xxviii. (1871), p. 236, pi. xii. fig. 64.— 
Lower Miocene ; Gironde, Erance. [Imperfect jaw.] 
O^^cDiodon pJatyodus, A. Portis, loc. cit. 1889, p. 367, pi. x. figs. 5-8. 
—Middle Oligocene; Horth Italy. [Dental plates: 
of Rome.] 
Z 'd' ^,%JAiodon stenodus, A. Portis, loc. cit. 1889, p. 376, pi. x. figs. 14,15. 
—Lower Miocene ; Turin. [Ditto.] = 
^ Diodon tenuispinus, L. Agassiz, Poiss. Eoss. vol. ii. (1833-44), 
pt. i. p. 17, pt. ii. p. 273, pi. Ixxiv. figs. 2, 3. Tetrodon 
