66 U.S. NATIONAL MUSEUM BULLETIN 264 



Holotype: 



MCZ 7075 (dry), Garden Island, near Freemantle, Western Australia, 

 Apr. 25, 1914. 



Protocentrotus annulatus Mortensen 



Echinoiden de deutsche Sudpolar Expedition, p. 58, taf. 8, figs. 7-8; 

 taf. 9, figs. 8, 10; taf. 14, figs. 3, 9, 1909. 



= Parechinus angulosus (Leske)--see Mortensen's Monograph of the 

 Echinoidea, vol. 3, no. 3, p. 149. 



Syntypes: 



MCZ 2027 (3 dry), Simane Bay, Cape of Good Hope. 



Psammechinus pulcherrimus A. Agassiz 



Proceedings of the Academy of Natural Sciences, Philadelphia, p. 357, 

 1863. 



= Hemicentrotus pulcherrimus (i^assiz) — see Mortensen's Monograph 

 of the Echinoidea, vol. 3, no. 3, p. 248. 



Syntype: 



MCZ 1752 (1 dry), Hakodate, Japan. 



Pseudechinus hesperus H. L. Clark 



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

 p. 395, pi. 27, fig. 1, 1938. 



Holotype: 



MCZ 7151 (dry), shore, Rottnest Island, Western Australia, Oct. 19, 

 1929. 



Pseudolovenia hirsute A. Agassiz and H. L. Clark 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 50, 

 no. 8, p. 255, 1907. 



Syntypes: 



USNM E834 (1 dry), Albatross Sta. 4083, off Puniawa Point, Maui, 

 Hawaii, 238-253 fms., July 21, 1902. 



USNM E781 (1 dry). Albatross Sta. 3836, Molokai, Hawaii, 238-255 

 fms., Apr. 3, 1902. 



USNM E782 (dry fragments). Albatross Sta. 3836, see above. 



USNM E907 (1 dry), Albatross Sta. 4036, off Kawaihae Light, Hawaii, 

 687-692 fms., July 10, 1902. 



USNM E908 (1 dry), Albatross Sta. 3920, off Diamond Head, Oahu, 

 Hawaii, 265-280 fms., May 6, 1902. 



USNM E922 (1 dry). Albatross Sta. 4122, off Barber's Point, Oahu, 

 Hawaii, 192-352 fms., July 26, 1902. 



USNM E4731 (dry fragments). Albatross Sta. 3839, Molokai, Hawaii, 

 259-266 fms., Apr. 4, 1902. 



