534 



the water through the siphons with great force. It uses only one 

 siphon at a time ; and the two inspirations follow in quick succes- 

 sion. 



Fig. 1. 



I noticed the intervals of these deep inspirations as follows. R 

 means that the right siphon, and L the left, was used. 



h. m. s. 



R.» 10 3 15 



R. 10 7 25 



R 10 10 40 



R 10 15 



R 10 20 



L 10 25 20 



R 10 30 15 



The appearance of the animal when in this position is wonder- 



Fiff. 2. 



fully like a frog with a very large mouth, the marked division hetweeu 



