IOWA ACADEMY OF SCIENCE 143 



few exceptions, of the cranial nerves of the larvae of plethoddnt forms. 

 In the words of Kingsbury: "The acceptance of Necturus as a per- 

 manent larva best explains at present these features." 



LITERATURE. 

 Botvers, Mary A. 



1900. The peripheral distribution of the cranial nerves of Spelerpes bilin- 



eatus. Proc. Amer. Acad. Arts and Sci., vol. 36. 

 Coghill, G. E. 



1902 The cranial nerves of Amblystoma tigrinum. Jour. Comp. Neurol., 



vol. 12. 

 1906. The cranial nerves of Triton taeniatus, Jour. Comp. "Neurol, and Psych., 

 vol. 16. 

 Druner, L. 



1901. Studien zur Anatomie der Zungeubein — , Kiemenbogen — , und Kehl- 



kopfmuskeln der Urodelen. I Theil. Zool. Jahrb., Bd. 15. 



1904. Studien zur Anatomie der Zungenbein — , Kiemenbogen — , und Kehl- 



kopfmuskeln der Urodelen. II Theil. Zool. Jahrb., Bd. 19. 

 Emerson, Ellen Tucker, 2d. 



1905. General anatomy of Tj^phlomolge rathbuni. Proc. Boston Soc. Nat. 



Hist., vol. 42, no. 3. 

 Fischer, J. G. 



1864. Anatomische Abhandlungen uber die Perennibranchiaten und Dero- 

 tremen. Hamburg. 

 Gaupp, E. 



1911. Ueber den N. trochlearis der Urodelen und uber die Austrittsstellen 

 der Gehirnnerven aus dem Schadelraum in allgemeinen. Anat. Anz., 

 Bd. 38, no. 16 u. 17. 

 Holmes, S. J. 



1906. The biology of the frog. New York. 

 Kingsbury, B. F. 



1895 On the brain of Necturus maculatus. Jour Comp., Neurol., vol. 5. 



1905. The rank of Necturus among the tailed Batrachia. Biol. Bull. vol. 

 8, no. 2. 

 Lee, Stewart. 



1893. Zur Kenntniss des Olfactorius. Berichte d. Naturforsch. Gesellsch, 

 zu Freiburg i. B.. Bd. 7, Heft 2. 

 Mooclie, Roy L. 



1908a The lateral line system in extinct Amphibia. Jour. Morph. vol. 19, no. 2. 



1908b The ancestry of the Caudate Amphibia. Amer. Nat., vol. 42. 

 Norris, H. W. 



1908. The cranial nerves of Amphiuma means. Jour. Comp. Neurol, and 



Psych., vol. IS. 



1909. The fifth and seventh cranial nerves in Plethodon glutinosus. Proc. 



Iowa Acad. Sci., vol. 16. 



1910. The cranial nerves of Siren lacertina. Proc. Iowa. Acad. Sci., vol. 17. 



1911. The cranial nerves of Siren lacertina. Science, n. s., vol. 33, no. 842. 



