NORTH PACIFIC OPHIURANS IN NATIONAL MUSEUM CLAEK. 119 



long. 128° 34' 40'' E., 139 fathoms, gray sand, broken shells, bottom 

 temperature 52.9°, 10 specimens; station 4916, Eastern Sea, lat. 30° 

 25' N.; long. 129° 6' 40" E., 361 fathoms, gray sand, globigerina, 

 broken shells, bottom temperature 42.7°, 1 specimen; station 4918 

 Eastern Sea, lat. 30° 22' N.;long. 129° 8' 30" E., 361 fathoms, gray 

 sand, globigerina, broken shells, bottom temperature 42.7°, 1 speci- 

 men; station 4933, Eastern Sea, lat. 30° 59' N. ; long. 130° 29' 50" E., 

 152 fathoms, rocky, bottom temperature 56°, 8 specimens; station4934, 

 Eastern Sea, lat. 30° 58' 30" N. ; long. 130° 32' E., 103 to 152 fathoms, 

 rocky, bottom temperature 60.6° to 56°, 9 specimens; station 4965, off 

 eastern Japan, lat. 33° 35' 20" N. ; long. 135° 10' 50" E., 191 fathoms, 

 dark green-gray sand, shells, bottom temperature 49.4°, 2 specimens; 

 station 5069, Suruga Gulf, lat. 35° 3' 10" N. ; long. 138° 47' E., 108 to 

 131 fathoms, mud, santl, broken shells, bottom temperature 55.8°, 

 6 specimens; station 5091, Uraga Strait, lat. 35° 4' 10" N. ; long. 

 139° 38' 12" E., 197 fathoms, green mud, coarse black sand, pebbles, 

 bottom temperature 47.6°, 2 specimens; station 5094, Uraga Strait, 

 lat. 35° 4' 42" N.; long. 139° 38' 20" E., 88 fathoms, black sand, 

 broken shells, bottom temperature 54.8°, 2 specimens. Bathymet- 

 rical range, 79 to 361 fathoms. Temperature range 60.6° to 42.7°. 

 Fifty-seven specimens. 



Type.— Cat. No. 25642, U.S.N.M., from station 4833. 



Like Tuirahilis, this species is very easy to recognize, for it shows 

 little tendency to variation, and in its color and in the arrangement 

 of its supplementary upper arm plates, it is quite different from the 

 other members of the genus. Its range is south of that of the other 

 species, and it may be regarded as one of the characteristic ophiurans 

 of southern Japan. 



OPHIOPHOLIS LONGISPINA, new species.i 



Disk 10 mm. in diameter; arms about SO mm. long. Disk covered 

 in large part by radial shields; between these and on center of disk 

 are a number of more or less circular or elliptical plates; on many 

 of these there is a single long slender spine; these spines may be 

 acicular as in fig. 45a, or they may be rough with minute thorns and 

 end in several teeth. Radial shields very large, much longer than 

 wide, separated from each other or just touching at distal end. Upper 

 arm plates circular or longer than wide, much swollen distally, more 

 or less surrounded by rounded granules, which are not in close contact 

 except at sides of plates, where several may touch each other; basal 

 upper arm plates smaller than those farther out. Interbrachial areas 

 below covered by spine-bearing plates. Oral shield very short and 

 wide, with adoral plates nearly as large. Oral papillae long, flat, and 

 blunt, three or four in a cluster just proximal to adoral plate. Teeth 



o Longus, signifying long, and spinus, signifying spine, in reference to the long arm 

 spines. 



