18 U.S. NATIONAL MUSEUM BULLETIN 264 



= Clypeaster (Stolonoclypus) speciosus Verrill--see Mortensen's Mono- 

 graph of the Echinoidea, vol. 4, no. 2, p. 103. 



Syntypes: 



MCZ 2203 (3 dry), La Paz, Mexico (exact locality not known). 



Coelopleurus floridanus A. Agassiz 



Revision of the Echini, pp. 102, 267, pi. 2c, figs. 14-15, 1872. 



Holotype: 



MCZ 4718 (spines, dry), off Tennessee Reef, Florida, 160 fms. 



Coelopleurus longicollis A. ^assiz and H. L. Clark 



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

 no. 2, p. 89, pi. 49, figs. 29-30, pi. 53, fig. 10, 1908. 



Holotype: 



MCZ 500 (dry), Basilan Straits, Philippines, 82-102 fms., Challenger 

 collection. 



MCZ 543 (1 alcohol), same as 500. 



Coelopleurus maculatus A. Agassiz and H. L. Clark 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 51, 

 no. 5, p. 116, 1907. 



Syntypes: 



USNM 27479 (2 dry), Albatross Sta. 4937, Kagoshima Gulf, Japan, 

 310 13' N., 139043' 10" E., 58 fms., Aug. 16, 1906. 



USNM 27614 (2 dilcohol), Albatross Sta. 4937, see above. 



MCZ 778 (1 dry). Albatross St3i. 4881, eastern channel, Korea Strait, 

 40-57 fms. 



A note in Clark's writing with specimens cataloged USNM 27479 reads 

 "Large one type specimen." 



Colobocentrotus stimpsoni A. Agassiz 



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

 no. 1, p. 9,pl. 2, figs. 4-7;pl. 29; pi. 32, figs. 1-4; pis. 33-34; pis. 37-39, 

 figs. 4-5; pi. 40-45, figs. 1-5, 1907. 



= Colobocentrotus mertensii Brandt--see Mortensen's Monograph of 

 the Echinoidea, vol. 3, no. 3, p. 433. 



Type: 



USNM 25434 (dry), Bonin Islands, North Pacific Exploring Expedition, 

 1853-56, collected by William Stimpson. 



This may well be the holotype; there is no indication of other type speci- 

 mens in existence, and no way of knowing from Agassiz' s description 

 whether he had one or more specimens. However, the Museum of Compara- 

 tive Zoology has three specimens from the same locality and same collector 

 labeled Colobocentrotus mertensii (1874 and 2136), but they are not marked 

 types. Also some spines from the above USNM specimen are at MCZ. 



