7 



Invertebrata — Mollusca. 



Cap. XVI. 59.2 INVEETEBEATA. 



81 Frotozoa 



,1 Rhizopoda 

 •2 Foramini fera 

 •8 Heliozoa 

 •4 Badiolaria 

 •5 InfuBoria 

 •6 Flagellata 

 •I Ciliata 



Cap. XVII. 59.31 Protozoa. 



31.75 Suctoria 

 .9 Sporozoa 

 .91 Gregarinidae 

 .92 Coccidia 

 .926 Haematüzoa 

 .93 Sarcosporidia 

 .94 Myxosporidia 

 .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 Lilhospongiae ïetractinellida 

 •5 Hyalospongiae, Hexactineliida 

 .6 Calcispongiae 



Cap. XX. 59.35—38 Cnidaria 



85 Cnidaria 



86 Actiuozoa 

 .1 Rugosa, Tetracorallia. 

 •2 Alcyonaria, Octocorallia 

 •8 Zoantharia, Hexacorallia 

 •4 Antipatharia 

 •5 Actinaria 

 •6 Madreporaiia 



t7 Uydrozoa 



37.1 Hydromedusae, Graptolitha 

 .2 Siphonophora 

 .3 Acalephae 

 .4 Calycozoa 

 •5 Rhizostomidae 

 .6 Marsupialida 

 .7 Discophora 

 38 Ctenophora 



Cap. XXI. 59.39 Echînoderma (incl. Enteropneusta). 



89 Eeliinoderma 



•1 Crinoidea, Pelmatozoa 

 •2 Asterozoa 

 •8 Asteroidea 

 •4 Ophiuroidea 



39.5 Echinoidea 

 .6 Holothurioidea 

 .7 Pedata, Elasipoda 

 .8 Apoda 

 .9 Enteropneusta 



4 Mollusca 



•1 Lamellibranchia 

 •2 Scaphopoda 

 •8 Gastrcpoda 

 .31 Amphineura 

 •32 Prosobranchia 

 •34 Heteropoda 

 •85 Opisthobranchia 

 •36 Nudibranchia 

 .37 Tectibranohia 



Cap. XXII. 59.4—4.5 Mollusca. 



4.38 Pulmonata 

 .4 Pteropoda 

 .5 Cephalopoda 

 .51 Tetrabrancliia 

 .52 Nautiloidea 

 .53 Ammonitae 

 .55 Dibranchia 

 .56 Octopoda, 

 •58 Decapoda 



