BREEDING HABITS OF AMBLYSTOMA PUNCTATUM. 289 



intervals between the emissions of eggs. This spring a female 

 taken at the height of the breeding season voided enough eggs 

 to cover the bottom of a small aquarium jar. She was brought 

 into the laboratory without an attendant male and after several 

 hours began to deposit eggs. The deposition lasted ten days 

 and the eggs first laid hatched. Captive females have more of a 

 tendency to lay single eggs than in nature, yet single eggs have 

 been recorded afield. Even before the female reaches the marshes 

 or ponds she occasionally lays eggs. In several instances near 

 the breeding grounds we have found under moist stones or logs 

 one or two eggs laid by Ambly stomas. 



Cornell University, 

 Ithaca, N. Y. 



