108 COPEIA 



and sometimes there finish the trill. If on land, the 

 female would at once start for the water. A few 

 moments after reaching the water, the male would 

 lose his hold and be tossed off. Then the perform- 

 ance would start all over again, the male usually 

 climbing first out of the water. He would take ab- 

 solutely no notice of the female if he was not trilling 

 when she was placed next to him. Thus, the interest- 

 ing feature was that the trill is the apparent stimu- 

 lus for both sexes. We left the pool about eleven 

 o'clock, but the trills were heard far into the night. 

 We did not actually see the operation of spawn- 

 ing, but a little later hundreds of tiny tadpoles were 

 observed in the pool. 



Gordon Boit Wellman, 



Maiden, Mass. 



Edited by J. T. Nichols, American Museum of Natural History 

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