^n^ alt 



bc6 fed)6ten S5anbeö. 



©eite 

 SSiccfc gcope 2(6ff)eltun3 t)fS 



Soop^^tcn .... 1 



3()re ©tnf^eilung in SlaJTen 3 

 öcflc Glaffc bec 3oop()»;ten. 



ECHINODERMATA ... 5 



1. Asterias 6 



Asterias 7 



Ophiura 21 



Gorgonocephalus ... 25 



2. Comatula 27 



3. Hol opus 31 



4. Encrinus . • . . . — 



5. Echinus 33 



Cidaris 37 



Astropyga 40 



Echinus — 



Echinoneus 47 



Nucleolites 48 



Galerites — 



Scutella — 



Cassidulus 51 



Ananchites 52 



Clypeaster 53 



Fibularia 54 



Spatangus 5G 



©ette 



6. Holothuria .... 59 



Cladodactyla 63 



Dactylota 64 



Aspidochir — 



Sporadipus 65 



Psolus — 



Oncinolabes 66 



Stichopus 67 



Holothuria — 



Cladolabes 72 



Chiridota — 



Synapta 74 



Molpadia 76 



Zweite Drbnung. 



7. Priapulus 77 



8. Sipunculus . . . . 78 



9. Bonellia 80 



10. Thalassema .... 81 



Thalassema — 



Echiurus — 



Sternaspis 83 



2)ic ©ingcwcttiCi 

 wurmer 



ENTOZOA 83 



NEMATOIDEA. 



