4 U.S. NATIONAL MUSEUM BULLETIN 264 



Ammotrophus cyclius H. L. Clark 



Records of the South Australian Museum, vol. 3, no. 4, p. 471, 1928. 



Paratypes : 



MCZ 2021 (3 dry). Encounter Bay, South Australia. 



MCZ 3352 (10 dry), Encounter Bay, South Australia. 



MCZ 7005 (1 alcohol). Encounter Bay, South Australia. 



Anthecinus roseus A. Agassiz 



Proceedings of the Academy of Natural Sciences, Philadelphia, 

 p. 358, 1863. 



= Microcyphus maculatus L. Agassiz — see Mortensen's Monograph of the 

 Echinoidea, vol. 3, no. 2, p. 155. 



Holotype : 



MCZ 1519 (dry), Ousima, Japan 



Apatopygus occidentalis H. L. Clark 



Memoirs of the Museum of Comparative Zoology at Harvard, vol. 55, 

 p. 425, pi. 28, fig. 103, 1938. 



Holotype : 



MCZ 7246 (dry), between Rottnest Island and Freemantle, Western 

 Australia, 10-12 fms., Oct. 20, 1929. 



Aporocidaris antarctica Mortensen 



Die Echinoiden der Deutschen Sudpolar- Expedition 1901-1903, 113 pp., 

 10 plates, 1909, p. 25, taf. HI, 5, 7; V, 2, 9-11; VII, 4-5; X, 6, 9; XI, 10; 

 XIV, 1, 16; XV, 8, 12-13, 16, 24-28; XVI, 15. 



Syntype : 



MCZ 2024 (1 dry), Antarctic Ocean, 1,937 fms., Gauss collection. 



Aporocidaris fragilis a. Agassiz and H. L. Clark 



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

 no. 1, p. 37, pi. 10, figs. 10-21; pi. 23, figs. 5-8, 1907. 



Syntype : 



MCZ 348 (1 dry), Albatross Sta. 3783, off Kamchatka, Alaska, 1,567 

 fms. 



Arachnoides tenuis H. L. Clark 



Memoirs of the Museum of Comparative Zoology at Harvard, vol. 55, 

 p. 415, pi. 27, figs. 3-4, 1938. 



Holotype : 



MCZ 7204 (dry), near mouth of Barred Creek, Western Australia, 

 September 1929. 



Paratypes : 



MCZ 7205 (2 dry), Entrance Point, Broome, Western Australia, 1929. 

 MCZ 7207 (1 dry), between Broome and Wallol, Western Australia, 

 8 fms., 1930. 



