

TABLE OF CONTENTS, xiii 



PAGE 



VERMES . -578 



Dinophilus, p. 586 ; Gasterotricha, p. 587 ; 

 Echinoderidae^ p. 587; Desmoscoleridae, p. 588; 

 Chaetosomidae, p. 588. 

 (i) Enteropneusta . . . . . ... .589 



(ii) Chaetopoda . . . . . . . -593 



Myzostomidae, Archi- Chaetopoda , p. 609. 

 (iii) Archi- Annelida . . . . . . . .613 



(iv) Gephyrea . . . . . . . . .616 



(v) Hirudinea . . . . . . . . .627 



(vi) Rotifera , . . . . . . . . 632 



(vii) Nemertea ......... 635 



(viii) Trematoda ........ 642 



(ix) Cestoda 655 



(x) Turbellaria .666 



(xi) Chaetognatha . . . . . . . .674 



(xii) Nematoda . . 676 



(xiii) Acanthocephala . . . . . . .689 



BRACHIOPODA, VERMIFORMIA, POLYZOA, PTEROBRANCHIA . . . .691 



Brachiopoda .......... 692 



Vermiformia 703 



Polyzoa . . . . . . . . . . 704 



Pterobranchia ... ... 711 



(b) Coelenterata, p. 712. 



(i) Ctenophora 716 



(ii) Anthozoa .... .... 724 



(a) Alcyonaria s. Octactiniae . . . . .726 



(b) Zoantharia s. Hexacoralla . . . , -733 

 (iii) Hydrozoa 745 



(a) Craspedota 748 



Trachy medusae, p. 749 ; Hydroidea, p. 755 ; 

 Siphonophora, p. 770. 



(b) Acraspeda . . 780 



Ephyroniae, p. 780; Tesseroniae, p. 786. 



(iv) Porifera -79 



B. MESOZOA, p. 813. 

 Orthonectidae, p. 813; Rhombozoa, p. 814. 



C. PROTOZOA, p. 8 1 8. 



*Plegepoda 824 



(i) Acinetaria ...... .824 



(ii) Infusoria 830 



(iii) Mastigophora ..... 840 



Flagellata, p. 841 ; Choanoflagellata, p. 847 ; 

 Dinoflagellata, p. 848; Cystoflagellata, p. 852. 



