OBSERVATIONS ON HOTARU-TKA WATASENIA SCINTILI^ANS. 107 
CONTENTS. 
Page 
Preface 75 
Habits Observed from the Zoological Point of View 
Sexual Dimorphisms 76 
Luminous Organs and their Phosphorescence 77 
Food 80 
Seasonal Changes of Liver Contents 81 
Female Genital Organ 82 
Number of Ovarian Eggs of the Female 83 
Male Genital Organ 84 
Spermatophores Fixed in the Female Body 85 
Facts Concerning Fate of the Male 85 
Eggs Floating on the Sea 87 
Conclusion 88 
Habits Observed from the Fishery Point of View 
Methods of Investigation 90 
Fishing Conditions of the Whole Coast 91 
Fishing Conditions of Local Parts 93 
Summary 102 
Explanation of Plates 106 
Plates I-III 
