20 U.S. NATIONAL MUSEUM BULLETIN 264 



Dermatodiadema globulosum A. Agassiz 



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

 p. 76, pi. 5 figs. 3-4, 1898. 



= Plesiodiadema globulosum (Agassiz) — see Mortensen's Monograph 

 of the Echinoidea, vol. 3, no. 1, p. 29. 



Syntypes: 



MCZ 582 (1 dry) , Albatross Sta. 3381, north of Malpelo Island, 1,772 

 fms. 



MCZ 583 (3 dry), Albatross Sta. 3398, off Galera Point, Ecuador, 

 1,573 fms. 



Dermatodiadema horridum A. Agassiz 



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

 p. 76, pL 5, figs. 5-7, 1898. 



= Plesiodiadema horridum (Agassiz) — see Mortensen's Monograph of 

 the Echinoidea, vol. 3, no. 1, p. 31. 



Syntypes: 



MCZ 584 (6 dry), Albatross Sta.. 3413, northwest of Culpepper Island, 

 Galapagos, 1,360 fms. 



MCZ 585 (3 dry), Albatross Sta. 3400, between Galera Point and the 

 Galapagos, 1,322 fms. 



MCZ 586 (2 dry). Albatross Sta. 3398, off Galera Point, Ecuador, 

 1,573 fms. 



MCZ 587 (6 dry). Albatross Sta.. 3363, between Cocos Island and main- 

 land, 978 fms. 



MCZ 588 (2 dry). Albatross Sta. 3362, between Cocos Island and main- 

 land, 1,175 fms. 



MCZ 589 (1 dry). Albatross Sta. 3361, between Cocos Island and main- 

 land, 902 fms. 



MCZ 607 (9 alcohol), same as 585. 



MCZ 608 (5 alcohol), same as 587. 



Desmechinus anomalus H. L. Clark 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 45, 

 p. 342, 1923, 



Holotype: 



MCZ 4635 (dry), China Sea (exact locality not known). 



Diadema mexicanum A. Agassiz 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 1, 

 p. 29, 1863. 



Syntypes: 



MCZ 635 (19 dry) Acapulco, Mexico. 



