PEDIGREE OF STAR-FISHES. 167 
Clypeastridze 
Spatangidee 
Dysasteridze 
Aspidochirota Sie 
Synaptida Cassidulidee 
Petalosticha 
Liodermatida | 
Apodia = Sa .. ~BMechinosike 
Galeritidee 
Echinometridze 
SSS eee 
Dendrochirota 
Eupodia Latistelles 
Holothurize Salenidse 
| 
Angustistelles 
Desmosticha 
Autechinida 
Colocrinze 
F | Spheeronitidee 
Phytastra 
Eocidaridee Eleutherocrina 
Ophiastra Agelacrinzs 
Discogastra Cystidea 
Melonitida Phatnocrins 
Brisingastra Palechinida Brahiata Pentremitida 
Echinida Blastoidea 
Colastra ee eee cae ao 
Brachiata 
Crinoida 
Crinastra 
Ms eg Po ee 
Tocastra 
Actinogastra 
Asterida 
| 
Phractelminthes 
Coelomati 
Gastraa 
