7 



Invertebrata — Mollusca. 



Cap. XVI. 59.2 INVERTEBRATA. 



Cap. XVII, 59.31 Protozoa. 



81 Protozoa 81.75 Suctoria 



.1 Rhizopoda .9 Sporozoa 



.2 Foraminifera .91 Gregarinidae 



•3 Helioïoa .92 Coccidîa 



•4 Kadiolaria .926 Haematozoa 



.5 Infusoria .93 Sarcosporidia 



.6 Flagellata .94 Myxosporidia 



•7 Ciliata .95 Microsporidia 



Cap. XVIII. 59.33 Coelenterata. 



Cap. 



84 Spongiae, Porifera 

 .1 Myxospongiae 

 .2 Ceratoapongiae 

 •8 Halichondriae, M< 



XIX. 59.34 Spongiae, Porifera. 



34.4 Lithospongiae Tetractinellida 



.5 Hyalospongiae, Hexactinellida 



•6 Calcispongiae 



lactinellida 



35 Cnidaria 



86 Aetinozoa 



.1 Kugosa, Tetracorallia. 

 •2 Alcyonaria, Octocorallia 

 •8 Zoantharia, Hexacorallia 

 A Antipatharia 

 .5 Actinaria 

 .6 Madreporaria 



87 Hydrozoa 



Cap. XX. 59.35—38 Cnidaria. 



37.1 Hydromedusae, Graptolitha 



•2 Siphonophora 



•3 Acalephae 

 .4 Calycozoa 



.5 Rhizostomidae 



.6 Marsupialida 

 • 7 Discophora 

 88 Ctenophora 



Cap. XXI. 59.39 Echinoderma (incl. Enteropneusta) 

 89 Echinoderma 39.5 Echinoidea 



•1 Crinoidea, Peluaatozoa 

 .2 Aeterozoa 

 •8 Asteroidea 

 •4 Ophiuroidea 



Cap. XXII. 



Mollusca 



•1 Lamellibranchia 

 •2 Scaphopoda 

 •8 Gastrcpoda 

 .31 Amphineura 

 •82 Prosobranchia 

 .84 Heteropoda 

 •85 Opisthobranchia 

 •36 Nudibranchia 

 .87 Tectibraachia 



.6 Holothurioidea 

 • 7 Pedata, Elasipoda 

 .8 Apoda 

 .9 Enteropneusta 



59.4—4.5 Mollusca. 



4.38 Pulmonata 

 .4 Pteropoda 

 •5 Cephalopoda 

 .51 Tetrabranchia 

 .52 Nautiloidea 

 .53 Ammonitae 

 .55 Dibranchia 

 .56 Octopoda 

 •58 Decapoda 



