CONTENTS. 



PAGE. 



Introduction 27 



Narrative 27 



Historical Account 29 



The Breeding Season 30 



Distinction between Sexes 32 



Method of Transfer of the Eggs 32 



Sex of the Egg Carrier 33 



Size of Mouth Cavity 34 



Size of Eggs and Number Incubated 35 



Size of Young and Number Carried. . 37 



26 



PAGE. 



Food and Feeding 39 



Feeding and Growth of Young while 



in the Paternal Mouth 42 



Length of Period of Gestation 43 



The Purpose of Buccal Incubation in 



the Gaff-topsail 46 



The Origin of the Habit of Oral 



Gestation 46 



Literature Cited. . 51 



