7 



Invertebrata — Mollusca» 



Cap. XVI. 59.2 mVERTEBEATA, 



51 Protozoa 

 •1 Rhizopoda 

 •2 Foraminifera 

 •3 Heliozoa 

 •4 Radiolaria 

 •5 Infusoria 

 .6 Flagellata 

 •7 Ciliata 



Cap. XVII. 59.31 Protozoa. 



31.75 Suctoria 

 .9 Sporozoa 

 .91 Gregarinidae 

 .92 Coccidia 

 .926 Haematozoa 

 .93 Sarcosporidia 

 .94 Myxoeporidia 

 .95 Microsporidia 



Cap. XVIII. 59.33 Coelentorata. 

 Cap. XIX. 59.34 Spongiae, Porifera. 



84 Spongiae, Porifera 

 .1 Myxospongiae 

 •2 Ceratospongiae 

 •3 Halichondriae, Monactinellida 



34.4 Lithospoîigiae Tetractineîlida 

 .5 Hyalospongiae, ilexactinellida 

 •6 Calcispongiae 



Cap. XX. 59.35—38 Cnidaria. 



85 Cnidaria 



86 Actinozoa 



.1 Hugos a, Tetracorallia. 

 •2 Alcyonaria, Octocorallia 

 •3 Zoantharia, Hexacorallia 

 •4 Autipatharia 

 •5 Actinaria 

 .6 Madreporaria 



87 Hydrozoa 



Cap. XXI. 59.S 



89 EchinocUrma 



•1 Crinoidea, Pelmatozoa 

 .2 Asteroaoa 

 •3 Asteroidea 

 •4 Ophiuroidea 



37.1 Hytlromedusae, Graptolitha 



•2 Siphonophora 



•3 Acalephae 



•4 Calycozoa 



•5 Rhizostomidna 



.6 Marsupialida 



.7 Discophora 

 38 Ctenophora 



Echinoderma (incl. Enter opceusta), 



39.5 Echinoidea 

 .6 Holothurioidea 

 .7 Pedata, Elasipoda 

 .8 Apoda 

 .9 Enteropneusta 



Cap. XXII. 59.4—4.5 Mollusca. 



Mollusca 



•1 Lamellibranchia 

 •2 Scaphopoda 

 •3 Gastrcpoda 

 •31 Aiïiphineura 

 »32 Prosobranchia 

 .34 Heteropoda 

 •35 Opisthobranchia 

 •36 Nudibranchia 

 •37 Tectibranchia 



4.3$ 

 .4 

 .5 

 .51 

 .52 

 .53 

 .55 

 .56 

 .58 



Pulmonaîà 

 Pteropoda 

 Oephalopoda 

 Tetrabraiicbia 

 Nautiloidea 

 Ammonitae 

 Dibranchia 

 Octopoda 

 Decapoda 



