xiv Contents 



PAGE 



Culturing Freshwater Bryozoa x 79 



By Mary Rogick, College of New Rochelle 



Phylum XIII. Annelida 

 Class Polychaeta 



Nereis limbata I ° 2 



By Benjamin H. Grave, De Pauw University 



A Method for Rearing Nereis agassizi and N. procera . . .184 

 By John E. Guberlet, University 0} Washington 



Hydroides hexagonus I &5 



By Benjamin H. Grave, De Pauw University 



Sabellaria vulgaris I ^7 



By Alex B. Novikoff, Brooklyn College 



Class Oligochaeta 



Cultivation of Enchytraeus albidus 19 J 



By Raymond F. Blount, University of Minnesota Medical School 



Laboratory Culture of Enchytraeus 193 



By Victor Loosanoff, U. S. Bureau of Fisheries 



Enchytraeid Worms I 93 



By William LeRay and Norma Ford, University of Toronto 



Tubificidae x 94 



By George R. La Rue, University of Michigan 



Earthworms x 95 



By Walter N. Hess, Hamilton College 



Culture of Allolobophora I 9° 



By R. N. Danielson, University of Minnesota 



Class Gephyrea 



Culturing Larvae of Urechis caupo r 97 



By G. E. MacGinitte, California Institute of Technology 



Class Hirudinea 



Laboratory Care of Leeches 201 



By J. Percy Mooee, University of Pennsylvania 



