AMPHIBIANS. 



27 



taken up into the cloaca of the female. The eggs are nsnall}^ laid 

 the day after fertilization, in masses containing from six to ten, 

 and are attached to stems or leaves of water plants. The larvae 

 emerge after an interval of about two weeks. The latter were 



Fig. 4. Distribution of Amhystoma ligrinum. 

 Horizontal ruling, specimens examined; vertical ruling, reports only. 



former!}' supposed to be a distinct species, "AxolotT". due to the 

 fact that metamorphosis may be delayed and breeding take place 

 during the larval stage. Under normal conditions, liowever, the 

 adult form is reached in about one hundred davs after hatchinc^. 



Distrihutlon: Northeast to ^Minnesota and south. (Jordan, 

 1899.) 



