140 THE UNIVERSITY SCIENCE BULLETIN. 



Hibernation. Wessenberg-Lund, 1913, says Velia currens winters as an 

 adult in moss which covers the stones. 



Oviposition. The eggs of the European form are said to be attached 

 to the rocks and vegetation at the surface of the water. 



Number of generations. Kulgatz says that Velia currens has several 

 generations a year. 



Food Habits. Predatory as are other striders. 



Summary. This genus needs attention by some one located where 

 there is flowing water. The writer is not thus located. 



