Preliminary report on the Echini of the exploring expedition of H. M. S. " Challenger, " Sir C. Wyville Thomson chief of civilian staff Author Agassiz, A. text Proceedings of the American Academy of Arts and Sciences 1879 14 190 212 journal article DBD3664E219840C48C1CF0C195CB6477 DBD3664E219840C48C1CF0C195CB6477 Porocidaris elegans , new species This treatment is a stub. You can help Plazi making the full treatment available.