HE COLUMELLA AURIS IN AMPHIBIA. 

 B. F. KINGSBURY AND H. D. REED. 



PLATE IV. 



Fig. .35. — Adnlt Ambystoiua. 



Fig. .3G. — Traiisfoniiiiiir Cbondrotus. 



Fig. .37. 

 >ansforming Aiubystoma. 



Fig. 38. — Traiisfonuiiig Cbondrotus. 



Fig. 39. 

 Embryo Ambystoma. 



Fhb .Tournal of MoRPHOLOoy. — Vol. XX, No. 4. 



