LIST OF AUTHORS. 1 49 



54. Homan, John, Regeneration of Limbs in Triton. 



Proc. Boston Soc. Nat. Hist, vol x, p. 174. 



55. Wyman, On the Structure of the Heart and Physiol- 



ogy of Respiration in the Batrachians. Proc. Bost. 

 Soc. Nat. Hist, vol v, p. 51. 



56. Putnam, F. W., Remarks on Plethodon erythrono- 

 tus and its eggs. Proc. Boston Soc. Nat. Hist. vol. 

 ix, p. 173. 



57. Sager, Abram, On American Amphibia. American 

 Jour. Sciences and Arts, 1839, P- 3 2 °- 



58. Kennicott, Robert, Animals seen at Fort William, 



North Shore Lake Superior. Trans. Chicago Acad, 

 vol. i, p. 144. 



59. Hoy, P. R., On the Amblystomaluridum. Smithso- 

 nian Reports, 1854, P- 2 95- 



60. Mann, Rev. Chas., On the History of an Aquatic 



Salamander Amblystoma opacum, Smithsonian Re- 

 ports, 1854, P> 2 94- 



61. Vaillant, Dr. Leon, Histoire Anatomique de Sirene 



lacertine. Ann. des scien. Nat. 4me ser. Tome xix, 

 P- 2 95- 



