﻿440 ACT1N0PTERYGTI.. 



P. 994 a, P. 3457 a. Smaller individual, in counterpart, wanting 

 part of the head and the extremity of the tail ; Lehach. 



Efjerton 4' Ennishillen Colls. 



P. 980 a, P. 3459 a. Small specimen, in counterpart, obliquely 

 crushed, and labelled Amblypterus lateralis by Agassiz ; 

 Lebach. Egerton $ Ennishillen Colls. 



Amblypterus duvemoyi (Agassiz). 



1833. Palceoniscus duvernoy, L. Agassiz, Poiss. Foss. vol. ii. pt. i. pp. 4, 

 45, 103, pi. vii. 



1834. Palceoniscus vratislaviensis, L. Agassiz, ibid. p. 60, pi. x. figs. 1, 

 2,4-6. 



1834. Palceoniscus lepidurus, L. Agassiz, ibid. p. 64, pi. x. figs. 3, 7, 8, 9. 

 1848. Amblypterus duvernoy, C. G. Giebel, Fauna der Vorwelt, Fische, 



p. 252. 

 1848. Palceoniscus vratislaviensis, C. G. Giebel, ibid. p. 247. 

 1851. Palceoniscus gibbus, F. H. Troschel, Verhandl. naturh. Verein 



preuss. Rheinlande u. AYestphalens, p. 523, pi. ix. 

 1851. Palceoniscus dimidiatus, F. H. Troschel, ibid. p. 528, pi. x. 

 (?) 1851. Palceoniscus tenuicauda, F. H. Troschel, ibid, p. 532, pi. xi. 

 (?) 1851. Palceoniscus elongatus, F. H. Troschel, ibid. p. 536, pi. xii. 

 1851. Palceoniscus opisthopterus, F. H. Troschel, ibid. p. 538, pi. xiii. 

 1857. Palceoniscus duvemoyi, F. H. Troschel, ibid. p. 16. 

 1861. Palceoniscus rohani, J. J. Heckel, Denkschr. k. Akad. YYiss., 



rnath.-naturw. CI. vol. xix. p. 51, pis. i.-iii. [Koyal Bohemian 



Museum, Prague.] 

 1861. Palceoniscus obliquus, J. J. Heckel, ibid. p. 56, pi. v. [Ibid.] 

 1861. Palceoniscus caudatus, J. J. Heckel, ibid. p. 58, pi. vi. [Ibid.1 

 1861. Palceoniscus vratislaviensis and lepidurus, H. B. Geinitz, Dyas, 



pp. 18, 19. 

 1861. Palceoniscus blainvillei, H. B. Geinitz (errore), ibid, p. 19, pi. ix. 



fig. 3. 

 1864. Palceoniscus vratislaviensis, E. Weiss, Zeitschr. deutsch. geol. 



Gesell. vol. xvi. p. 274, woodcut. 

 1877. Amblypterus duvemoyi, E, H. Traquair, Quart. Journ. Geol. Soc. 



vol. xxxiii. p. 558. 

 1877. Amblypterus wratislaviensis, R. H. Traquair, ibid. p. 558. 

 1877. Amblypterus lepidurus, dimidiatus, elongatus, tenuicauda, gibbus, 



opisthopterus, rolianni, obliquus, and caudatus, R. H. Traquair, ibid. 



p. 558. 



Type. Two nearly complete fishes ; Palaeontological Museum, 

 Munich, and olim H. G. Bronn Collection. 



Trunk deep in the abdominal region, and the caudal pedicle 

 produced ; the back much arched in advance of the dorsal fin, the 



