52 U.S. NATIONAL MUSEUM BULLETIN 264 



Nacospatangus gracilis A. Agassiz 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 3, 

 p. 189, 1873. 



Syntypes: 



MCZ 3243 (5 alcohol), Juan Fernandez, ^%ims.,Hassler Expedition. 



Notechinus marionis Mortensen 



Discovery Reports, vol. 12, p. 221, pi. 2, figs. 5-10; pL 9, figs. 1-4, 

 1936. 



= Pseudechinus marionis (Mortensen)- -see Mortensen' s Monograph of 

 the Echinoidea, vol. 3, no. 2, p. 236. 



Syntypes: 



MCZ 7596 (2 dry), off Marion Island, Discovery Sta. 1564. 



Notechinus novaezealandiae Mortensen 



Videnskabelige Meddelelser f ra den naturhistoriske Forening i Kjoben- 

 havn, bd. 73, p. 153, pi. 6, figs. 7-10; pi. 7, figs. 4-5, 1921. 

 = Pseudechinus novaezealandiae (Mortensen)- -see Mortensen' s Mono- 

 graph of the Echinoidea, vol. 3, no. 2, p. 237. 



Syntype: 



MCZ 4987 (1 dry), Foveaux Strait, New Zealand, 22 fms., 1915. 



Notocidaris gaussensis Mortensen 



Echinoidea der deutsche Sudpolar Expedition, p. 18, 1909. 



Syntypes: 



MCZ 2023 (1 dry). Gauss Winter Station, Antarctica, 195-212 fms. 



MCZ 4863 (1 dry), off Antarctica, 195 fms. 



Nudechinus scotiopremnus H. L. Clark 



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

 no. 4, p. 277, pi. 97, figs. 4-6, 1912. 



Holotype and Paratype: 



MCZ 1209 (2 dry--latgest is holotype), Suez. 



Paratype: 



MCZ 1210 (1 dry), New Zealand (exact locality not known). 



Nudechinus stictus H. L. Clark 



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

 no. 4, p. 279, pi. 93, fig. 1; pi. 97, figs. 1-3, 1912. 



Holotype: 



MCZ 1211 (dry), Sulu Archipelago, 1-S fms., Siboga collection. 



Palaeobrissus hilgardi A, Agassiz 



Memoirs of the Museum of Comparative Zoology at Harvard, vol. 10, 

 no. 1, p. 56, pi. 24, figs. 6-15, 1883. 



