62 U.S. NATIONAL MUSEUM BULLETIN 264 



Podocidaris scutata A. Agassiz 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 5, 

 no. 9, p. 72, 1880. 



= Habrocidaris scutata (Agassiz)- -see Mortensen's Monograph of the 

 Echinoidea, vol. 2, p. 550. 



Holotype: 



MCZ 503 (dry), Santa Cruz, 510 fms., Blake collection. 



Porocidaris cobosi A. Agassiz 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 32, 

 p. 74, pi. 3, figs. 2-5, 1898. 



= Histocidaris cobosi (Agassiz) — see Mortensen's Monograph of the 

 Echinoidea, vol. 1, p. 84. 



Syntype: 



MCZ 352 (8 dry), off Chatham Island, Galapagos, 385 fms. 



Porocidaris milleri A. Agassiz 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 32, 

 p. 74, pi. 4, 1898. 



= Aporocidaris milleri (Agassiz) — see Mortensen's Monograph of the 

 Echinoidea, vol. 1, p. 110. 



Syntype s: 



MCZ 349 (5 dry). Albatross Sta. 3360, off Panama, 1,672 fms. 



MCZ 350 (4 dry). Albatross Sta. 3381, off Panama, 1,772 fms. 



MCZ 372 (9 alcohol), Albatross Sta. 3399, see above. 



MCZ 373 (2 alcohol). Albatross Sta. 3381, see above. 



Porocidaris purpurata Wyville- Thomson 



Proceedings of the Royal Society of London, p. 493, 1872. 

 = Poriocidaris purpurata (Wyville- Thomson) — see Mortensen's Mono- 

 graph of the Echinoidea, vol. 1, p. 104. 



Syntype: 



MCZ 252 (1 dry), northwest of Scotland, 500-600 fms.. Porcupine 

 collection. 



Porocidaris sharreri A. Agassiz 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 5, 

 no. 9, p. 71, 1880. 



= Histocidaris sharreri (Agassiz) — see Mortensen's Monograph of the 

 Echinoidea, vol. 1, p. 86. 



Syntype s: 



MCZ 253 (1 dry), Blake Sta. 152, off St. Kitts. 122 fms. 



MCZ 362 (1 alcohol), off Nevis, 356 fms. {= Calocidaris micans). 



Porocidaris variabilis A. Agassiz and H. L. Clark 



Memoirs of the Museum of Comparative Zoology at Harvard, vol. 34, 

 no. 1, p. 32, pi. 16, fig. 1, 1907. 



- Histocidaris xxiriabilis (Agassiz and Clark)--see Mortensen's Mono- 

 graph of the Echinoidea, vol. 1, pp. 56, 82. 



