PEDIGREE OF STAR-FISHES. 



167 



Clypeastridse 

 Spatangidae 



Synaptida 



Liodermatida 

 Apodia 



Aspidochirota 



Dysasteridse 



Dendrochirota 



Eupodia 



Holothuriae 



Phytastra 



Ophiastra 

 Discogastra 



Brisingastra 



Colastra 



Cassidalido9 

 Petalosticha 



Echinonidee 



Galeritidse 



Eckinometridse 



LatistellBB 



Salenidee 



Angnstistelte 

 Desmosticha 

 Autechiuida 



ColocrinBB 



SphseronitidsB 

 Eocidaridse 



Agelacrinse 

 Cystidea 



Melonitida 



PalecMnida 



Echinida 



Elentherocrma 



Pliatnocrmse 

 Brahiata Pentremitida 

 Blastoidea 



Brachiata 

 Crinoida 

 Crinastra 



Tocastra 



Actinogastra 



Asterida 



I 

 Phractelminthes 



I 

 Coelomati 



I 

 Gastrsea 



