10 U.S. NATIONAL MUSEUM BULLETIN 293 



Holotype: 



USNM 25615 (dry), Albatross Sta. 2866, near Flattery Rocks, Wash- 

 ington, 171 fms., 1888. 



Paratypes: 



USNM 33381 (5 alcohol), Albatross Sta. 2866, see above. 



MCZ 3165 (2 dry), Albatross Sta. 2866, off Washington, 171 fms. 



Amphiodia trychna H. L. Clark 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 62, 

 pp. 285-292, pi. 3, figs. 1-3, 1918. 



Holotype: 



MCZ 4144 (1 dry), Buccoo Bay, Tobago, 1-3 ft., April 1916, Carnegie 

 Expedition. 



Amphiodia vicina H. L. Clark 



Zoologica, VOL XXV (part 3), p. 338, figs. 1-2. 1940. 



Holotype: 



MCZ 6026 (1 dry), Zaca Sta. 213-D13-16, Gulf of Nicoya, Ballenas 

 Bay, Costa Rica, 35-45 fms. 



Paratypes: 



MCZ 6125 (3 dry), same as 6026. 



MCZ 6124 (7 alcohol), same as 6026. 



AHF 86.0 (1 dry), Zaca Sta. 213-38, Ballenas Bay, Gulf of Nicoya, 

 Costa Rica, 35-45 fms., 1928. 



Amphioncus platydiscus H. L. Clark 



John Murray Expedition 1933-34. Scientific Reports, vol. VI, no. 2. 

 p. 68, figs. 24-26, 1939. 



Para type: 



MCZ 6027 (1 dry), John Murray Exped. Sta. 16, Gulf of Aden, 102 fms. 



Amphiophiura canaliculata Koehler 



U.S. National Museum Bulletin 100, vol. 5, p. 357, pi. 82, figs. 10-12, 

 1922. 



Holotype: 



USNM 41341 (dry). Albatross Sta. 5356, North Balabac Strait, Philip- 

 pines, 58 fms., Jan. 5, 1909. 



Amphiophiura fastigiata Koehler 



U.S. National Museum Bulletin 100(5), p. 359, pi. 82, figs. 1-4, 

 1922. 



Holotype: 



USNM 41344 (dry), Albatross Sta. 5259, Caluya Island, off north- 

 western Panay, 312 fms., June 3, 1908. 



Amphiophiura irregularis Ziesenhenne 



Allan Hancock Pacific Expeditions, vol. 8, no. 2, p. 36, pi, 7, figs. 4-6, 

 1940. 



