— 102 



Genus Hanleya 



,, Hemiarthrum 



,, Choriplax (= Microplax) 

 IL Superfamilia Mesoplacophora 

 Faniilia Ischnochitonidae 

 Subfamilia Ischnochitoninae 

 Genus Tonicella 

 „ Schizoplax 

 ,, Callochiton 



Sectio Stereochiton 

 ,, Trachydermon 



Subgenus Cyanoplax 



,, Chaetopleura 

 „ Pallochiton 

 ,, Dinoplax 



„ Ischnochiton 

 Subgenus Stenochiton 

 „ Stenoplax 



Sectio Stenoradsia 

 Subgenus Ischnoplax 



,, Ischnochiton s. s. 

 Sectio Lepidozona 

 ,, Radsieila 

 ,, Ischnoradsia 

 Subgenus Heterozona 

 Subfamilia Callistoplacinae 

 Genus Callistochiton 



,, Nuttallina 



Subgenus Middendorffia 

 ,, Craspedochiton 



,, Phacellozona (= Angasia) 

 „ Callistoplax 

 „ Ceratozona 

 Familia Mopaliidae 

 Genus Mopalia 

 ,, Placiphorella 

 „ Plaxiphora 



Auch hat Pilsbry durch Diagramme 

 gesucht. 



Sectio Guildingia 

 ,, Fremblya 

 Subgenus Placophoropsis 

 Familia Acanthochitidae 

 Genus Spongiochiton 

 ,, Acanthochites 

 Sectio Notoplax 

 ,, Cryptoconchus 

 ,, Loboplax 

 ,, ? Lep toplax 

 ,, Katharina 



,, Amicula 



„ Cryptochiton 

 Familia Cryptoplacidae 

 Genus Crvptoplax 

 ,, Choneplax 

 III. Superfamilia Teleoplacophora 

 Familia Chitonidae 

 Subfamilia Chitoninae 

 Genus Chiton 



Sectio Eadsia 

 ,, Sclerochiton 



,, Eudoxochiton 

 Subfamilia Toniciinae 

 Genus Tonicia 



Sectio Fannettia 

 ,, Acanthopleura 



Subgenus Mesotomura 



,, Acanthopleura s. s, 



,, Maugeria 



Amphitomura 

 Subfamilia Liolophurinae 

 Genus Schizochiton 



Lorica 

 Loriceila 



Enoplochiton 



Oiiithochiton 

 Liolophura 



die Phylogenie der Gruppen zu veranschaulichen 



