XIV 



CONTENTS. 



Chapter XIX. CRUSTACEA— coo^mxerf. 



Caligidae (Chalimus stage) 

 Leniaeidae 

 Lernaeopodidae 

 C. Branchima .... 



7. General considerations regarding the segmentation of th 



and the metamorphoses of the Malacostraca 

 Segmentation of the body 

 Typical form of the limbs 

 Metamorphoses of the Malacostraca . 

 The Nairplius stage 

 The Metanauplius stage 

 The Protozoaea stage 

 The Zoaea stage 



The Mysis and Metazoaea stages 



Final stages of nietamorpliosis (Mastigopus, Megalopa) 

 Abl)reviation of metamorphosis 

 Metamorphosis of the Schizopoda and Stomatopoda 



8. Metamorphosis of the Leptostraca 



9. Metamorphosis of the Schizopoda 



Nauplius and Metanauplius of tlie Euphausiidae 

 Calyptopis stages . 



Furcilia and Cyrtopia stages 

 Development of the Mysidae and Lophogastridae 

 10. Metamorphosis of the Decapoda 



A. Sergestidae .... 



Metanauplius of Lucifer 

 Protozoaea and Zoaea of Lucifer 

 Mysis and Mastigopus larvae of Lucifer 

 Metamorphosis of Sergestes . 

 Elaphocaris (Zoaea of Sergestes) 

 Acanthosoma (Mysis larva of Sergestes) 

 Metamorphosis of other Sergestidae 



B. Penaeidae .... 



Metamorphosis of Penaeus 



Ceratapsis 



Metamorphosis of Stenopus . 



C. Caridea .... 



Abbreviated development of some Caridea 



Amphion 

 • D. Astacidea .... 



Homarus .... 



Nephrops . . . 



Astacus and Cambarus 

 K Loricata .... 



Embryos of Scyllarus 



Structure of the Phyllosoma . 



Metamorphosis of the Phyllosoma 

 F. Thalassinidea 



Metamorphosis of Gebia 



Larva of Galliaxis (Trachelifer) 



bodj' 



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