MoUuscoidea — Orustacea. 



8 



Cap. XXIII. 59.46 MoUuscoidea (Brachiostoma). 

 Cap. XXIV. 59.47 Bryozoa. 



47 Bryozoa 



.1 Gymnolaemata 

 •2 Phylactolaemata 



47.3 Pterobranchia 

 .4 Entoprocta 



Phoronis v. 51.76. 



49 Tnnicata 

 •1 Ascidiae 

 •2 Copelatae 

 •3 Monascidiae 



Cap. XXV. 59.48 Brachiopoda. 



Cap. XXVI. 59.49 Tunicata. 



49.4 Synascidiae 



.5 Pyrosoma 



.6 Salpae 



.7 Doliolum 



Cap. XXVII. 59.5 ARTICULATA. 



Cap. XXVIII. 59.51 Vermes 

 51 Vermes 



•1 Helminthes, Parasiti^ 

 •2 Platyhelminthes 

 •21 Cestodes 

 .22 Trematodes 

 .23 Turbellarii 

 .24 Nemertini 

 •3 Nematodes 

 •31 Gordiacei 

 •33 Acanthocephali 

 .35 Chaetognathi 

 .4 Annelida 

 .5 Hirudinea 



(incl. Mesozoa, Trichoplax) 

 51.6 Oligochaeta 



.7 Polychaeta 



.74 Gephyrea 



.76 Phoronis 



.78 Myzostomum 



.8 Rotifera 



.85 Echinoderes 



.88 Gastrotricha 



.89 Dinophilus 



.9 Orthonectida 



.95 Dicyemida 



.99 Trichoplax, etc. 



Cap. XXIX. 59.52 ARTHROPODA. 

 Cap. XXX. 59.53 Crustacea (incl. Pantopoda et Xiphosura) 



53 Crustacea 



.1 Entomostraca 

 .15 Pantopoda 

 .2 Phyllopoda 

 .23 Branehiopoda 

 .24 Cladocera 

 .3 Ostracoda 

 •4 Copepoda 

 .45 Parasita 

 •5 Cirripedia 



.6 Malacostraca, Leptostraca 

 • 7 Arthrostraca 

 .71 Amphîpoda 



53.72 Isopoda 

 .8 Thoracostraca 

 .81 Cumacea 

 .82 Stomapoda 

 .83 Schizopoda 

 .84 Decapoda 

 .841 Macrura, Anomurs 

 .842 Brachyura 

 .9 Gigantostraca 

 .91 Eurypterida 

 «92 Xiphosura 

 .93 Trilobita 



1 Im allgemeinen. 



