A MONOGRAPH OF THE EXISTING CRINOIDS 81 



Albatross station 4888; Eastern Sea, about 20 miles southwest of Nagasaki En- 

 trance; Nomo Zaki bearing N. 57 E., 16.5 miles distant (lat. 3226'00" N., long. 

 12927'30" E.) ; 128 meters; bottom temperature 15.39 C.; dark gray sand and broken 

 shells; August 8, 1906 [A. H. Clark, 1912, 1915, 1918] (3, U.S.N.M., 35623). 



Albatross station 4934; Eastern Sea, off Kagoshima Gulf; Sata Mistiki Light 

 bearing N. 77.5 E., 7 miles distant (lat. 3058'30" N., long. 13032'00" E.); 185-273 

 meters; bottom temperature 15.89 C.; rocky bottom; August 16, 1936 [A. H. Clark, 

 1907, 1908, 1912, 1915, 1918] (15, U.S.N.M., 22627, 35564, 35565, 35620, 36185). 



Albatross station 4935; Eastern Sea, off Kagoshima Gulf; Sata Misaki Light 

 bearing N. 58 E., 4.5 miles distant (lat. 30 57'20"N., long. 13035'10" E.); 185 

 meters; bottom temperature 15.89 C.; bottom, stones; August 16, 1936 [A. H. Clark 

 1912, 1915, 1918] (1, U.S.N.M., 35566). 



Albatross station 5070; Suruga Gulf; Ose Saki bearing S. 8 W., 1.8 miles distant 

 (lat. 3503'25" N., long. 13847'40" E.); 194 meters; bottom temperature 14.22 C.; 

 mud, sand, and broken shells; October 15, 1906 [A. H. Clark, 1912, 1915, 1918] (2, 

 U.S.N.M., 35624; M.C.Z., 344). 



Albatross station 5069; Suruga Gulf; Ose Saki bearing S. 6.5 E., 1.7 miles distant 

 Gat. 3503'10" N., long. 13847'00" E.); 194-236 meters; bottom temperature from 

 13.22 to 17.22 C.; mud, sand, and broken shells; October 15, 1906 [A. H. Clark, 1912, 

 1915, 1918] (3, U.S.N.M., 35617). 



Sagami Bay (lat. 3503' N., long. 13847' E.); 153 meters; Alan Owston, yacht 

 Golden Hind [A. H. Clark, 1908, 1912, 1915, 1918] (1, U.S.N.M., 35625 [original No. 

 7010]). 



Albatross station 3719; off southern Japan; Ose Zaki bearing S. 13 W., 1.5 miles 

 distant; 128-166 meters; volcanic sand, shells, and rock; May 11, 1900 (1, M.C.Z., 

 270). 



Geographical range. From the vicinity of Hong Kong northward to southern 

 Japan, from the Korean Straits to Sagami Bay. 



Bathymetrical range. From 128 to 306 meters; the average for all the records is 

 219 meters. 



Thermal range. From 10.78 to 15.89 C.; the average for all records is 13.67 C. 



Character of bottom. Rocky; stones; mud, sand, and broken shells; coral and 

 sand ; dark gray sand and broken shells; fine gray sand and broken shells; gray sand and 

 broken shells. 



Note. This is by far the most common and most generally distributed species of 

 the family Thalassometridae occurring in Japan, just as the corresponding species, 

 P. granulata, is the most common and most generally distributed species of the family 

 in the Philippine Islands. 



History. This species was first described under the name of Antedon orion in a 

 paper published on September 17, 1907. The type specimen had been dredged by the 

 Albatross at station 4934 in the previous year. 



In my first revision of the old genus Antedon published on October 29, 1907, this 

 species was transferred to the new genus Charitometra and was listed as Charitometra 

 orion. In a paper on new genera of unstalked crinoids published on April 11, 1908, I 

 remarked that "the species compressa and orion, placed in Charitometra, should have 

 been referred to Thalassometra . . ." In another paper published on May 14, 1908, 



