PLATE XXIX. 



Abactinal System op 



1. Bothriocidaris Pahleni, copied from Schmidt. 



2. Palsecliinus elegans, copied from Bailey. 



3. Goiiiocidaris biserialis, copied from Ddderlein. 



4. Leiocidaris imperialis, copied from Doderlein. 



5. Porocidaris Sharreri, copied from A. Agassiz. 



6. Goniocidaris geranioides, copied from A. Agassiz. 



7. Phyllacanthus baculosa, copied from A. Agassiz. 

 8-10. Dorocidaris papillata, copied from A. Agassiz. 



11. Dorocidaris Blakei, copied from A. Agassiz. 



12. Dorocidaris Bartletti, copied fi-om A. Agassiz. 



13. Aspidodiadema tonsuni, copied from A. Agassiz. 



14. 15. Aspidodiadema Jacobyi, copied from A. Agassiz. 



16. Aspidodiadema microtuberculatum, copied from A. Agassiz. 



