A MONOGRAPH OF THE EXISTING CRINOIDS 563 



Between Ito and Hatsushima; about 150 meters; Doctor Haberer, March, 1903; 

 original Nos. 4200, 4202, 4204, 4209 (4, U.S.N.M., 35757, 35760; Munich Mus.). 



Fukuura; about 150 meters; Doctor Haberer, March 1-12, 1903; original Nos. 

 4141, 4122 (part) (3, U.S.N.M., 35768; Munich Mus.). 



Aburatsubo; Prof. Franz Doflein, 1904; original No. 294 (1, Munich Mus.). 



Misaki; Prof. Franz Doflein, 1904-5; original No. 335 (1, Munich Mus.). 



Off Yenoshima; Alan Owston, March 27, 1905; original No. 9275 [A. H. Clark, 

 1908] (2, U.S.N.M., 35019, 35156). 



Off Yenoshima; probably 91 meters; Alan Owston, May 15, 1902; original No. 

 7217 (A. H. Clark, 1908] [1, U.S.N.M., 35160). 



Suruga Gulf; Alan Owston, April 12, 1903; original No. 7892 [A. H. Clark, 1908] 

 (1, U.S.N.M., 35070). 



Suruga Gulf and Sagami Sea [McClendon, 1906]. This refers to the Albatross 

 stations from 3701 to 3735 listed above. 



Japan; H. Loomis (1, U.S.N.M., 36168). 



Albatross station 5095; in Uraga Straits, at the entrance to Tokyo Gulf; Joga 

 Shima light bearing N. 28 W., 3 miles distant (lat. 35 05' 34" N., long. 139 38' 

 36" E.); 106 meters; temperature 14.33 C. ; fine black sand and broken shells; 

 October 26, 1906 (1, U.S.N.M., 36073). 



Geographical range.- From Hong Kong to the Korean Straits, and eastward to 

 Tokyo Bay. 



Bathymetrical range. From 25 to 188 (?288) meters. The average of 25 records 

 is 103 meters. 



Thermal range. From 14.33 to 16.6 C. The average of the 3 records is 15.61C. 



History. The crinoids which were obtained by the Albatross off southern Japan 

 in 1900 were originally sent to Dr. Hubert Lyman Clark, then professor of zoology 

 at Olivet College, for determination. The myzostomes which he found on these he 

 sent to Dr. Jesse F. McClendon for study. The very stout comasterids in the collection 

 Doctor Clark simply designated as a species of Actinometra, and they are given as 

 Actinometra, sp., in Doctor McClendon's report, which was published in 1906. 



In 1907 Doctor Clark, now on the staff of the Museum of Comparative Zoology, 

 was so kind as to turn over to me the Albatross crinoids from southern Japan, and 

 among these I found numerous examples of a species which I identified with Carpen- 

 ter's Actinometra robustipinna, originally described from the Moluccas. 



In 1908 in a paper on the crinoid genus Comatula I mentioned the features of the 

 union between the elements of the IBr series in Actinometra robustipinna. My idea 

 of that form was based upon these comasterids from southern Japan. 



Mr. Frank Springer in 1907 had purchased the crinoid collection of Mr. Alan 

 Owston, of Yokohama, who had done a considerable amount of dredging from his 

 yacht the Golden Hind, and had presented it to the National Museum. In another 

 paper published in 1908 I recorded this species, as Comaster robustipinna, from 5 

 localities in Sagami Bay and Suruga Gulf where it had been dredged by Mr. Owston 

 in 1901-1905. 



I soon discovered that this form is not the same as Carpenter's Actinometra 

 robustipinna, and in 1909 I described it as a new species under the name of Comanthus 

 (Comanthus) pinguis. 



