Marvels of Pond-Life. 



113 



Somewhat like the Cephalosiphon, though much 

 commoner and without the siphon, is Limnias cerato- 

 phylli, which every collector is sure to meet. The 





a 



m 



Cephalosiphon limnias. 



length of the Limnias varies, according to Pritchard, 

 from 1-20" to 1-40". Our Cephalosiphon, when fully 

 extended and magnified one hundred and eighty linear, 



8 



