458 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



I laid special stress upon the fact that the length of the distal pinnules and of their 

 component segments are characteristic of A. acerba. He remarked that this com- 

 bination scarcely ever occurs in his specimens, though often long pinnule segments 

 together with strongly developed brachial spines. He concludes that acerba is a 

 synonym of anthus. 



Gislen said that the only tolerably sure difference between Asterometra anthus 

 and A. macropoda seems to be the appearance, length, and number of segments of 

 the cirri, young specimens of A. macropoda being, in fact, very difficult or even im- 

 possible to distinguish from the young of A. anthus. 



The proximal dorsal spines of the cirri are usually more strongly developed in 

 specimens of A. anthus from the Bonin Islands than in those from Japan. 



Parasite. Professor Gisle"n noted that specimens from Bock's stations 51, 53, 

 54, and 56 carried parasitic gastropods of the genus Stylina (see Part 2, page 648). 



Localities. Dr. Th. Mortensen's Pacific Expedition 1914-'16, station 9; the 

 coral bank, Goto Islands, off southwestern Japan (lat. 3215' N., long. 12812' E.); 

 162 meters; hard bottom; May 15, 1914 [Gisle"n, 1927]. 



South of the Goto Islands (lat. 3215' N., long. 12820' E.); 183 meters; Capt. 

 H. Christiansen, April 17, 1926 (1, C. M.). 



Albatross station 4936; Eastern Sea, off Kagoshima Gulf; Sata Misaki Light 

 bearing N. 21 E., 5.7 miles distant (lat. 3054'40" N., long. 13037'30" E.); 

 185 meters; bottom temperature 15.89 C. ; stones; August 16, 1906 [A. H. Clark, 

 1907, 1908, 1909, 1912, 1915, 1918] (1, U.S.N.M., 22625). 



Formosa (Taiwan) Strait; 64 meters [A. H. Clark, 1908, 1909, 1912, 1913, 1915, 

 1918; GislSn, 1922; Sieverts, 1932] (1, C. M.). 



Dr. Sixten Bock's Expedition to Japan station 45; Bonin Islands, east of Chichi- 

 jima; 146 meters; July 31, 1914 [Gisl6n, 1922, 1924]. 



Dr. Sixten Bock's Expedition to Japan station 46; Bonin Islands, east of the 

 Channel; 128 meters; August 1, 1914 [Gislen, 1922, 1924]. 



Dr. Sixten Bock's Expedition to Japan station 47; Bonin Islands, east of the 

 Channel; 146 meters; August 1, 1914 [GislSn, 1922, 1924]. 



Dr. Sixten Bock's Expedition to Japan station 53; Bonin Islands, 2 miles east 

 of Higashijima; 165 meters; sand and broken shells; August 7, 1914 [Gisl6n, 1922, 

 1924]. 



Dr. Sixten Bock's Expedition to Japan station 54; Bonin Islands, east of Chichi- 

 jima; 128 meters; broken shells and sand; August 7, 1914 [Gisle"n, 1922, 1924]. 



Dr. Sixten Bock's Expedition to Japan station 55; Bonin Islands; eastnortheast 

 of Chichijima; 210 meters; sand and shells; August 15, 1914 [Gislen, 1922, 1924]. 



Dr. Sixten Bock's Expedition to Japan, station 56; Bonin Islands, east of the 

 Channel; 210 meters; August 15, 1914 [Gislen, 1922, 1924]. 



Dr. Sixten Bock's Expedition to Japan station 57; Bonin Islands, east of Chi- 

 chijima; 183 meters; August 15, 1914 [GislSn, 1922, 1924]. 



Dr. Sixten Bock's Expedition to Japan station 59; Bonin Islands, eastnortheast 

 of Anojima; 183 meters; August 15, 1914 [Gisl6n, 1922, 1924]. 



Sahul Bank (lat. 1030' S., long. 125 E.); from a cable [Bell, 1893; A. H. Clark, 

 1909, 1912; Gisle"n, 1922] (1, I. M.). 



Geographical range. From the Bonin Islands, southwestern Japan, and Formosa 



