TABLE OF CONTENTS 



Page 



Introduction 7 



Technique 9 



Methods of Study 10 



Biology 12 



Types of Localities 12 



Reactions of Worms 17 



Morphology 22 



Family Planariidae 22 



Planaria velata Stringer 1909 22 



Planaria macidata Leidy 1847 23 



Planaria truncata Leidy 1851 24 



Family Catenulidae 25 



Stenostoma leucops (Ant. Duges) 1828 26 



Stenostoma tenuicauda von Graff 1911 30 



Stenostoma giganteum nov. spec 30 



Stenostoma glandiferum nov. spec 35 



Family Microstomidae 37 



Microstoma caudatum Leidy 1852 38 



Macrostoma sensitivum Silliman 1884 39 



Macrostoma album nov. spec 39 



Family Prorhynchidae 42 



Prorhynchus stagnalis M. Schultze 1851 43 



Prorhynchus applanatus Kennel 1888 44 



Family Dalyelliidae 45 



Dalyellia dodgei von Graff 1911 46 



Dalyellia alba nov. spec 47 



Dalyellia megacepkala nov. spec 49 



Family Typhloplanidae 50 



Rhynchomeso stoma rostratum (Miiller) 1774 51 



Strongylostoma rosaceum nov. spec 52 



Epithelium 54 



Muscular system 57 



Parenchyma 58 



Digestive System 59 



Nervous System 60 



Excretory System 62 



Reproductive System 63 



Development 64 



Life Habits 69 



Typhloplana viridata (Abildgaard) 1789 71 



Mesostoma ehrenbergii (Focke) 1836 73 



