CONTENTS. 



XIU 



Chapter XIX. CRVSTACEA-contimted. 



If. Glands (antennal and shell-glands) 

 /. Genital organs 

 Literature referring to the embryonic development of the Crustacea 

 II. ]\Ietamorphosis of the Crustacea 



1. The Nauplius stage 



Primary segmentation of the Nauplius 



Metanauplius 



Phylogenetic significance of the Nauplius 



Further development of the Nauplius stage 



2. Typical form of the Crustacean limbs . 



Significance of the Phyllopodan limbs 



3. Metamorphosis of the Phyllopoda 



A. Branchiopoda 



Apus 



Branchipus 



Estheria . 



General considerations regarding the Branchiopoda 



B. Cladocera 



4. 3Ietamori)liosis of the Ostracoda 



Cypridae 



Cytheridae, Cypridinidae . 



Halocypridae 



5. Metamorphosis of the Cirripedia 



A. Thoracica 



Nauplius 



Metanauplius 



Free-swimming Cypris stage . 



Attachment and transformation of the Cypris larva 



Development of the adult Cirripede shell 



Metamorphosis of the Balanidae 

 £. Abdoniinalia . . . . 



C. Rhizocepliala . . . . 



Nauplius of Sacculina 



Cypris stage of Sacculina 



Kentrogon stage . . . . 



Sacculina interna . . . . 



Sacculina externa . . . . 



Z>. Ascothoracida . . . . 



E. The morphological derivation of the complemental males 



6. Metamorphosis of the Copepoda 



General considerations . . . . 



A. Gnathostomata . . . . 



Character of the Nauplius stage 



Metanauplius . . . . 



Cyclops stage . . . . 



£. Parasita ..... 



General considerations regarding parasitic Copepoda 



Chondracanthidae . . . . 



Philichthyidae . . . . 



Dichelestiidae . . . . 



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