222 HAWAIIAN AND OTHER PACIFIC ECHINI. 



The latter are called tridentate by Doderlein, but ophicephalous is preferable 

 because of the articular loops. 



The specimens studied show greater diversity of color than would be expected 

 from Doderlein's description, to which none of them answer exactly. The test, 

 although very light actinally, is light brown, dull violet or reddish brown above; 

 the color is deepest on the genital plates, while the periproct is often much lighter, 

 in decided contrast. The small spines are all light-colored and those of the 

 actinal side are nearly or quite white, but abactinally they are more or less 

 deeply tinged with yellowish green. The primaries are very pale brown or 

 yellowish green, with 3-6 narrow and indistinct bands of brownish red; as a rule 

 the bands are narrower than the light spaces which separate them, but near the 

 tip of the spine they may be as wide. The primaries are very slender and the 

 general appearance of this species is so different from hawaiiensis, as to leave no 

 doubt of its distinctness from that form. As hawaiiensis and indica are obviously 

 very nearly allied, I cannot follow Doderlein in considering indica merely a 

 variety or form of mirabilis. 



The latter was taken by the "Albatross" at the following stations, the 

 specimens ranging from 7 to 22 mm. in diameter. 



Station 3708. Off Ose Zaki, Honshu Island, Japan. 60-70 fathoms. Gr. 

 m., vol. s., a. 



Station 4807. Off Cape Tsiuka, Japan, 4136' 12" N., 140 36' E. 44-47 

 fathoms. Sh., crs. g. 



Station 4808. Off Cape Tsiuka, Japan, 41 35' 50" N., 140 36' 45" E. 47 

 fathoms. S., sh., crs. g. 



Station 4900. Off Ose Saki Light, Eastern Sea, 32 28' 50" N., 128 34' 40" E. 

 Bott. temp. 52.9. 139 fathoms. Gy. s., brk. sh. 



Station 4933. Off Kagoshima Gulf, Japan, 30 59' N., 130 29' 50" E. Bott. 

 temp. 56. 152 fathoms. Rky. 



Station 4934. Off Kagoshima Gulf, Japan, 30 58' 30" N., 130 32' E. Bott. 

 temp. 60.6-56. 103-152 fathoms. Rky. 



Station 4965. Off Hiro Misalu Light, Japan, 33 35' 20" N., 135 10' 50" E. 

 Bott. temp. 49.4. 191 fathoms. Dk. gn.-gy. s., sh. 



Station 5047. Off Kinka San Light, Japan, 38 12' 50" N., 141 49' 15" E. 

 Bott, temp. 49.6. 107 fathoms. Dk. gy. s., brk. sh., p. 



Bathymetrical range, 44-191 fathoms. Extremes of temperature, 60.6- 

 49.4. 



Forty specimens. 



