7 



Invertebrata — Mollusca. 



Cap. XVI. 59.2 INVERTEBRATA. 



81 Protozoa 

 •1 Rhizopoda 

 •2 Foraminifera 

 •3 Heliosoa 

 •4 Radiolaria 

 •5 InfuBoria 

 .6 Flagellata 

 •7 Ciliata 



Cap. XVII. 59.31 Protozoa. 



31.75 Suctoria 

 .9 Sporozoa 

 .91 Gregarinidae 

 .92 Coccidia 

 .926 Haematozoa 

 .93 Sarcosporidia 

 .91 Myxosporidia 

 .95 Microsporidia 



Cap. XVIII. 59.33 Coelenterata. 



Cap. XIX. 59.34 Spongiae, Porifera. 

 34 Spongiae, Porifera 34.4 Liihospongiae Tetractinellida 



.1 Myxospongiae 



.2 Ceratospongiae 



•3 Halichondriae, Monactinellida 



i5 Hyalospongiae, Hexactinellida 

 ,6 Calcispongiae 



Cap. XX. 59.35—38 Cnidaria. 



35 Cnidaria 



86 Âctinozoa 



.1 Rugoaa, Tetracorallia. 

 ,2 Alcyonaria, Octocorallia 

 ,3 Zoantharia, Hexacorallia 

 ,4 Antipatharia 

 •5 Actinaria 

 ,6 Madreporaria 



87 Hydrozoa 



37.1 Hydromedusae, Graptolith.a 



.2 Siphonophora 



.3 Acalephae 



.4 Calycozoa 



.5 Rhizostomidae 



.6 Marsupialida 



.7 Discophora 

 38 Ctenophora 



Cap. XXI. 59.39 Echinoderma (incL Enteropneusta). 



89 Echinoderma 



•1 Crinoidea, Pelmatozoa 

 «2 Asterozoa 

 .3 Asteroidea 

 •4 Ophiuroidea 



39.5 Echinoidea 

 .6 Holothurioidea 

 .7 Pedata, Elasipoda 

 .8 Apoda 

 .9 Enteropneusta 



Mollusca 

 .1 Lamellibranchia 

 •2 Scaphopoda 

 •3 Gastropoda 

 .31 Amphineura 

 .32 Prosobranchia 

 .34 Heteropoda 

 .35 Opistbobranchia 

 •36 Nudibranchia 

 .37 Tectibranchia 



Cap. XXII. 59.4—4.5 Mollusca. 



4,38 Pulmonata 



,4 Pteropoda 

 i5 Cephalopoda 

 ,51 Tetrabranchia 

 .52 Nautiloidea 

 .53 Ammonitae 

 i55 Dibranchia 

 ,56 Octopoda 

 ,58 Decapoda 



