7 



Invertebrata — Mollusca. 



Cap. XVI. 59.2 INVERTEBRATA, 



Cap. XVII. 59.31 Protozoa. 



81 Protozoa 31.75 Suctoria 



.1 Rhizopoda .9 Sporozoa 



•2 Foraminifera .91 Gregarinidae 



•3 Heliozoa .92 Coccidîa 



•4 Radiolaria .926 Haematozoa 



.5 Infusoria .93 Sarcosporidia 



.6 Flagellata .94 Myxosporidia 



•7 Ciliata .95 Microsporidia 



Cap. XVIII. 59.33 Coelenterata. 



Cap. XIX. 59.34 Spongiae, Porifera. 

 84 Spongiae, Porifera 



.1 Myxospongiae 

 •2 Ceratospongiae 

 .8 Halichondriae, Monactinellida 



34.4 Lithospongiae Tetractinellida 

 .5 Hyalospongiae, Hexactinellida 

 •6 Calcispongiae 



Cap. XX. 59.35—38 Cnidaria. 



85 Cnidaria 



86 Actinozoa 



.1 Rugosa, Tetracorallia. 

 •2 Alcyonaria, Octocorallia 

 •3 Zoantharia, Hexacorallia 

 .4 Antipatharia 

 .5 Actinaria 

 •6 Madreporaria 



87 Hydrozoa 



37.1 Hydromedusae, Graptolithe 



.2 Siphonophora 



.8 Acalephae 



.4 Calycozoa 



.5 Rhizostomidae 



.6 Marsupialida 



• 7 Discophora 

 88 Ctenophora 



Cap. XXI. 59.39 Echinoderma (incl. Enteropneusta), 



39 Echinoderma 



•1 Crinoidea, Pelmatozoa 

 .2 Asterozoa 

 •8 Asteroidea 

 .4 Ophiuroidea 



39.5 Echinoidea 

 .6 Holothurioidea 

 .7 Pedata, Elasipoda 

 .8 Apoda 

 .9 EnteropneusU 



Mollusca 



•1 Lamellibranchia 

 •2 Scaphopoda 

 •3 Gastropoda 

 .31 Amphineura 

 •32 Prosobranchia 

 .34 Heteropoda 

 •85 Opisthobranchia 

 •36 Nudibranchia 

 .87 Tectibranchia 



Cap. XXII. 59.4—4.5 Mollusca. 



4,38 Pulmonata 

 .4 Pteropoda 

 •5 Cephalopoda 

 .51 Tetrabranchia 

 .52 

 .53 



Nautiloidea 

 Ammonitae 

 .55 Dibranchia 

 .56 Octopoda 

 .58 Decapoda 



