STRUCTURE AND DEVELOPMENT OE LEPIDOSTEUS. 
433 
into each other. If, in fact, we were anxious to make any radical change in the 
ordinary classification of Fishes, it would be by uniting the Teleostei and Ganoids, or 
rather constituting the Teleostei into one of the sub-groups of the Ganoids, equivalent 
to the Chondrostei. We do not recommend such an arrangement, which in view of 
the great preponderance of the Teleostei amongst living Fishes would be highly incon¬ 
venient, but the step from Amia to the Teleostei is certainly not so great as that 
from the Chondrostei to Amia, and is undoubtedly less than that from the Selachii to 
the Holocephali. 
List of Memoirs on the Anatomy and Development of Lepidosteus. 
1. Agassiz, A. “ The Development of Lepidosteus.” — Part I. Proc. Amer. Acad. 
Arts and Sciences, vol. xiv., 1879. 
2. Agassiz, L. c Becherches s. 1. Poissons Fossiles.’ Neuchatel: 1833-45. 
3. Boas, J. E. “ liber Herz u. Arterienbogen bei Ceradotus u. Protopterus .” 
Morphol. Jahrbuch, vol. vi., 1880, 
4. Davidoff, M. von. “ Beitrage z. vergleich. Anat. d. hinteren Gliedmassen d. 
Fische.” Morphol. Jahrbuch, vol, vi., 1880. 
5. Gegenbaur, C. c Untersuch. z. vergleich. Anat. d. Wirbelthiere,’ Heft II., 
Schultergurtel d. Wirbelthiere. Brustfiosse der Fische. Leipzig: 1865. 
6. Gegenbaur, C. “ Zur Entwick. d. Wirbelsaiile d. Lepidosteus, &c.” Jenaische 
Zeitschrift, vol. iii., 1867. 
7. Hertwig, 0. “ Uber d. Hautskelet d, Fische (Lepidosteus u. Polypterus ).” 
Morphol. Jahrbuch, vol. v., 1879. 
8. Hceyen, Van der. “liber d. zellige Schwimmblase d. Lepidosteus .” Muller’s 
Archiv., 1841. 
9. Hyrtl, J. “ Uber d. Schwimmblase von Lepidosteus osseus.” Sitz. d. Wiener 
Akad., vol. viii., 1852. 
10. Hyrtl, J. “ Uber d. Pori abdominales, d. Kiemen-Arterien, u. d. Glandula 
thyroidea d. Ganoiden.” Sitz. d. Wiener Akad., vol. viii., 1852. 
11. Hyrtl, J. ‘Uber d. Zussammenhang d. Geschlechts u. Harnwerkzeuge bei d. 
Ganoiden.’ Wien: 1855. 
12. Kolliker, A. ‘Uber d. Ende d. Wirbelsaule b. Ganoiden.’ Leipzig: 1860. 
13. Muller, J. “ liber d. Bau u. d. Grenzen d. Ganoiden.” Berlin Akad., 1844. 
14. Schneider, H. “Uber d. Augenmuskelnerven d. Ganoiden.” Jenaische Zeit¬ 
schrift, vol. xv., 1881. 
15. Wilder, Burt G. “ Notes on the North American Ganoids, Amia, Lepidosteus, 
Acipenser, and Polyodon.” Proc. Amer. Assoc, for the Advancement of Science, 
1875. 
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