xo. 1673. liECEXT CRIXOIDS FROM THE PHILIPPINES— CLARK. 409 



Family PENTACRINITID.E. 



Genus ENDOXOCRINUS A. H. Clark. 

 ENDOXOCRINUS ALTERNICIRRUS (P. H. Carpenter). 



Two fine specimens of this interesting species were dredged at 

 station 523G ; off the eastern coast of Mindanao, north of Lianza 

 Bay; 494 fathoms; one has thirty, the other thirty-one arms, 115 

 mm. long from the basals. They agree perfectly with Carpenter's 

 description and figure, and with the Challenger specimen in the U. S. 

 National INIuseum. The color is a slightly brownish white. 



Carpenter included as uncertain Cliallengcr station 210, off' Pan- 

 glao and Siquijor (375 fathoms), in his list of localities; the 

 rediscovery of the sjDecies in the Philippine Islands suggests that he 

 was right in referring his unlabeled specimens to this station. 



Genus HYPALOCRINUS A. H. Clark. 



HYPALOCRINUS NARESIANUS (P. H. Carpenter). 



Three specimens, each with arms about 150 mm. long, were secured 

 at station 523G; off the eastern coast of Mindanao, north of Lianza 



nADIAL.S. BASALS, AND INFRABA.SALS OF HYPALOCRINUS NARESIANUS. 



Bay; 404 fathoms. They agree perfectly Avith a specimen at hand 

 from the Challenger collection which possibly was taken off Panglao 

 and Siquijor in 375 fathoms. The peculiar dorso-ventral flattening 

 of the short proximal cirrus joints, and the double dorsal tubercles 

 on the more di.stal joints, characteristic of the genus, are well marked. 

 The terminal 30 mm. to 35 mm. of the arms have only rudimentary 

 pinnules, so that the arms present the same curious " rat-tailed "" 

 appearance considered by Carpenter as especially characteristic of 

 Metacrimoi. This condition is exhibited by the two specimens figured 

 by Prof. Doderlein which were obtained by the Sihoga off Celebes; 



