X 



CONTENTS. 



By E. Kohschelt 



Chapter XXII. PENTASTOMIDAE. 



1. Embryonic development 



2. The larval development 



3. General considerations 



Literature ..... 



Chapter XXIII. PANTOPODA. By E. Korschelt 

 Oviposition and care of the brood 



1. Cleavage and formation of the germ-layers 



2. The further development of the embryo 



3. The form of the larva and its transformation into the 



4. General coi>siderations . 



Literature ..... 



Chapter XXIV. 

 Literature 



TARDIGRADA. By E. Korschelt 



adult 



Chapter XXV. ONYCHOPHORA (Pekipatus). By E. Korschelt 

 Structure of the egg .... 



1. Cleavage and formation of the germ-layers 



Peripatus novae-zealandiae 

 Peripatus capensis 

 The American species 



2. The development of the external form of the body 



3. The formation of the organs 



The ectodermal structures 



The integument 



The nervous system and the ventral organs 



The eyes .... 



The slime- and the crural glands 

 The alimentary canal 

 The mesodermal structures 



The body-cavity and the blood-vascular system 



The musculature 



The nephridia 



The salivary glands 



The anal glands 



The genital organs 

 Another account of the origin of the mesodermal structures 

 General considerations 

 Literature ..... 



Chapter XXVI. MYRIOPODA. By E. Korschelt 

 Oviposition and the constitution of the egg 



1. Cleavage and formation of the germ layers 



2. The development of the external form of the body 



A. Chilopoda .... 



E. Diplopoda .... 

 The first rudiment of the embryo 

 Flexure of the germ-band 

 The further development of the embryo 

 The interpretation of the mouth-parts of the Myr 

 Post-embryonic development . 



C. Symphyla and Pauropoda 



opod 



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