NORTH PACIFIC OPHIURANS IN NATIONAL MUSEUM CLARK. 257 



OPHIOCOMA ERINACEA. 



Ophiocoma erinaceus MULLER and TROSCHEL, Sys. Ast., 1842, p. 98. 



.Locality. Kagoshima Bay, Japan, 1 specimen. 



The disk diameter of this specimen is 23 mm. and the upper arm 

 spines are remarkably long, 8 to 10 mm. The specific name has 

 always been written erinaceus, but there seems to be no good reason 

 why it should not conform in gender to the generic name. 



OPHIOPTERIS PAPELLOSA. 



Ophiocoma papillosa LYMAN, 111. Cat. Mus. Comp. Zool., vol. 8, pt. 2, 1875. p. 11. 



Locality. Monterey, California, 8 to 12 fathoms, 3 specimens. 



There seems to be no question that this species is congeneric with 

 0. antipodum, although it has hitherto been left in Ophiocoma. The 

 specimens before me are about 13 mm. across the disk and light 

 brown in color, the arms faintly banded with darker. 



Family OPHIOTHRICID^E. 



OPHIOTHRIX CILIARIS. 



Ophiura ciliaris LAMARCK, Anim. s. Vert., vol. 2, 1816, p. 545. 

 Ophiothrix ciliaris MULLER and TROSCHEL, Sys. Ast., 1842, p. 114. 



Locality. Kobe, Japan, 8 fathoms, 1 specimen. 



This is one of the Challenger specimens, identified doubtfully by 

 Lyman as ciliaris. It is unlike that species in certain characters, and 

 I suspect it is probably a form of koreana. 



OPHIOTHRIX KOREANA. 



Ophiothrix koreana DUNCAN, Jour. Linn. Soc. London (Zool.), vol. 14, 1879, p. 473. 



Localities. Albatross station 3656, Hakodate Bay, Japan, 11.5 

 fathoms, green mud, sand, 1 specimen; station 3657, Hakodate Bay, 

 Japan, 13.5 fathoms, fine gray sand, 2 specimens; station 3659, 

 Hakodate Bay, Japan, 15.5 fathoms, fine gray sand, 1 specimen; 

 station 3661, Gulf of Tokyo, Japan, 169 fathoms, mud, pebbles, 2 

 specimens; station 3698, off Manazuru Zaki, Japan, 153 fathoms, 

 green mud, volcanic ashes, sand, 9 specimens; station 3702, off Seno 

 Umi, Japan, 31 to 41 fathoms, volcanic mud, sand, rocks, 1 specimen; 

 station 3704, off Seno Umi, Japan, 94 to 150 fathoms, fine volcanic 

 sand, 2 specimens; station 3707, off Ose Zaki, Japan, 63 to 75 fathoms, 

 volcanic sand, ashes, gravel, 20 specimens; station 3713, off Ose Zaki, 

 Japan, 45 to 48 fathoms, volcanic sand, shells, rocks, 1 specimen; 

 station 3716, off Ose Zaki, Japan, 65 to 125 fathoms, volcanic sand, 

 shells, rocks, 4 specimens; station 3717, off Ose Zaki, Japan, 63 to 

 100 fathoms, volcanic sand, shells, rocks, 10 specimens; station 3720, 

 off Ose Zaki, Japan, 63 fathoms, volcanic sand, shells, 2 specimens; 

 34916 Bull. 7511 17 



