Mollusooidea — Crustacea. 



Cap. XXIII. 59.46 MoUascoidea (Brachiostoma). 

 Cap. XXIV. 59.47 Bryozoa. 



47 Bryozoa 



.1 Gymnolaemata 

 •2 PhyJactolaemata 



49 Tuuicutu 

 .1 Aseidiae 

 .2 Copelatae 

 •3 Monascidiae 



47.3 Pterobranchia 

 .4 Entoprocta 



Phoronis v. 51.76. 



Cap. XXV. 59.48 Brachiopoda. 



Cap. XXVI. 59.49 Tunicata. 



49.4 Synascldiae 

 .5 Pyrosoma 

 •6 Salpae 

 .7 Doliolum 



Cap. XXVII. 59.5 ARTICULATA. 



Cap. XXVIII. 59.51 Vermes 



61 Venues 



.1 Helminthes, Parasiti* 



•2 Platyhelminthes 



.21 Cestodes 



.22 Trematodes 



.23 Turbellarii 



.24 Nemertini 



.3 Nematodes 



.31 Gordiacei 



.33 .\caQthocephali 



.35 Chaetogoatbi 



•4 Annelida 



.5 Hirudinea 



(incl. Mesozoa, Trichoplax; 



51.6 Oligochaeta 

 .7 Polychaeta 

 .74 Gephyrea 

 .76 Phoronis 

 .78 Myzostomum 

 .8 Rotifera 

 .85 £chinoderes 

 .88 Gastrotricha 

 .89 Dinophilus 

 .9 Orthonectida 

 .95 Dicyemida 

 .99 Trichoplax, etc. 



Cap. XXIX. 59.52 ARTHROPOD A. 

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



53 Crustacea 



.1 P^riTomostraca 



.15 Pantopoda 



.2 Phyllopodii 



.23 Branchiopoda 



.24 Cladocerii 



.3 Ostracoda 



•4 Copepoda 



•45 Paraaita 



.5 Cirripedia 



•6 Malacoatraca, Leptostraca 



•7 Arthrostraca 



.71 Amphipoda 



53.72 Isopoda 

 .8 Thoracoatraca 

 •81 Cumacea 

 .82 Stomapoda 

 .83 Sehizopoda 

 .84 Decapoda 

 .841 Macrura, Anomura 

 .842 Brachyura 

 .9 Gigantoatraca 

 .91 Eurypterida 

 .92 Xiphosura 

 .93 Trilobita 



> Im allgeineinen. 



