CONTENTS. 

 J* 



Page. 



Materials and methods of study , io73 



General description of adult toadfish '073 



Historical account i 1074 



Habits and characteristics i077 



Nesting habits 1077 



Nesting places 1077 



The eggs _ 1078 



Number of eggs in a nest- 108 1 



The fish polygamous 1081 



Orientation of the embryos 1082 



Care of the nests 1083 



Cleaning the nests 1085 



Brooding and guarding the young 1086 



Attitudes and movements 1087 



Feeding habits 1 1088 



Food 1 088 



Capture of food .__ 1089 



Disposition ^ 1 089 



Feeding in captivity 1 090 



Fighting tendencies 1091 



Diseases logi 



Vitality 1093 



Winter habitat 1093 



Sounds 1 1093 



Economic value 1094 



Life history 1 095 



Organs of generation 1095 



The ovary ^ , i095 



The testis 1096 



Fertilization and embryonic development _. 1096 



Natural fertilization _ . _- 1096 



Artificial fertilization 1096 



Formation of the germ disk 1098 



Segmentation __ 1098 



Invagination 1 099 



Formation of the embryonic shield iioo 



Differentiation of the embryo 1 100 



The larval toadfish iioi 



Early stage : -. iioi 



Late stage 1103 



The free-swimming young toadfish 1105 



The adult toadfish _ 11 06 



Literature cited 1108 



1072 



