PARTIAL LIST OF LITERATURE 



Andrews, E. A.: An Undescribed Acraniate: Asymmetron lucanum, 1893. 



Ayers, H. : Concerning Vertebrate Cephalogenesis, 1890. 



Beddard, F. E. : Mammalia, Cambridge Natural History, Vol. X, 1909. 



Beebe, C. W.: The Tetrapteryx Stage in the Ancestry of Birds, 1915. 



Bensley, B. A.: On the Evolution of the Australian Marsupialia, with Re- 

 marks on the Relationships of Marsupials in General, 1903. 



Boulenger, G. A. : The Tailless Amphibia of Europe, 1897. 



Boulenger, G. A.: Teleostei; Cambridge Natural History, Vol. VII, 1904. 



Bourne, G. C.: An Introduction to the Study of the Comparative Anatomy 

 of Animals, 2 vols., 1900. 



Brehm, A. E.: Tierleben; allgemeine Kunde des Tierreichs. 4th edition, re- 

 vised. Vol. I, Saugetiere, 1912. 



Bridge, T. W.: Fishes, Cambridge Nat. Hist., Vol. VII, 1904. 



Bronn, H. G.: Klassen und Ordnungen des Thierreichs. 



Caldwell, H. : Embryology of Monotremata and Marsupialia, 1887. 



Case, E. C.: The Permo-Carboniferous Red Beds of North America and their 

 Vertebrate Fauna, 1915. 



Cerfontaine, P.: Recherches sur la developpement de 1'Amphioxus, 1906. 



Chamberlin, T. C.: On the Habitat of the Early Vertebrates, 1900. 



Child, C. M.: Individuality in Organisms, 1915. 



Child, C. M.: Senescence and Rejuvenescence, 1915. 



Cope, E. D. : Batrachia of North America. 



Cope, E. D.: Article on Amphibia in Riverside Natural History. 



Cope, E. D. : Crocodiles, Lizards, and Snakes of North America, 1900. 



Coues, E. : Key to North American Birds, 1887. 



Dean, B.: Fishes Living and Fossil, 1895. 



Dean, B.: Fin-fold Origin of Paired Fins, 1896. 



Dean, B.: Development of Garpike and Sturgeon, 1895. 



Dean, B. : Chimeroid Fishes and Their Development, 1906. 



Dendy, A. : Outlines of Evolutionary Biology, 1912. 



Dickerson, M. C.: The Frog Book, 1907. 



Ditmars, R.: The Reptile Book, 1907. 



Duckworth, W. L. H.: Prehistoric Man, 1912. 



Evans, A. H.: Birds; Cambridge Natural History, Vol. IX, 1909. 



Flower, W. H.: Osteology of Mammals, 1885. 



Flower, W. H., and Lydekker, R. Mammals, 1891. 



Gadow, H.: Amphibia and Reptiles; Cambridge Natural History, Vol. VIII, 

 1901. 



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