A. H. CLARK : THE CRINOIDS OF THE INDIAN OCEAN. 251 



PENTAMETROCRINUS JAPONICUS. 



Eudiocrinus japoiiicns 1882. P. H. Carpenter, Journ. Linn. See. (Zool.), vol. 16, 



p. 499. 

 Pentametrocrinus japonicus 1908. A. H. Clark, Proc. Biol. Soc. Washington, 



vol. 21, p. 135. 



Habitat. — Southern Japan. 

 Depth. — 103-712 fathoms. 



PENTAMETROCRINUS VARIANS. 



Eudiocrinus varians 1882. P. H. Carpenter, Journ. Linn. Soc. (Zool.), vol. 16, 

 p. 496. 



Pentametrocrinus varians 1908. A. H. Clark, Proc. Biol. Soc. Washington, 

 vol. 21, p. 135. 



Localities. — '"Investigator''' Station No. 315. 



'" Investigator '' Station No. 331. 



Remarks. — A very fine specimen dredged at Station 315 resembles in the 

 minutest details individuals at hand dredged by the United States Fisheries 

 Steamer " Albatross" off southern Japan. The arms were probably 100 mm. 

 to 110 mm. in length; the cirri are 30 mm. long, and are composed of 21 seg- 

 ments. This example is, therefore, of about the same size as the largest from 

 Japan. 



A specimen of the same size as, and similar to, the preceding, was dredged 

 at Station 331. 



Other Records. — Philippine Islands, and noitjiward to southern Japan. 

 Depth.— 361-1050 fathoms. 



PENTAMETROCRINUS SEMPERI. 



Eudiocrinus semperi 1882. P. H. Carpenter, Journ. Linn. Soc. (Zool.), vol. 16, 



p. 497. 

 Pentametrocrinus semperi 190S. A. H. Clark, Proc. Biol. Soc. Washington, 



vol. 21, p. 135. 



Habitat. — Off New South Wales. 

 Depth. — 950 fathoms.' 



Family ATELECRINID^. 



Aielecrinidoe 1899. Bather, Rep. British Association for 1S9S, p. 923. 



i Thaumatocrinus renovatus, whieli is the young of some undeterminable species of Pentametro- 

 crinus, was found by the " Challenger " in tlui oxtromi! soutli of the! Indian Oeean at a depth of 

 1800 fathoms. 



