570 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxxu. 



Station JVo. 4915. —31° 31' 00" north latitude, 129° 25' 30" east lon- 

 gitude, Tsurikake Saki Light bearing north 62° east, 14.8 miles dis- 

 tant. Depth, 427 fathoms; bottom temperature, 41.9° F.; bottom, gray 

 globigerina ooze and broken shell, August 12, 1906. 



One small specimen, 



Staiion Mk 4916.-30° 25' 00" north latitude, 129° 06' 40" east lon- 

 gitude, Gwaja Shima bearing south 37° east, 37.5 miles distant. 

 Depth, 361 fathoms; bottom temperature, 42.7° F.; bottom, gra}' 

 sand, globerina ooze, and broken shell. August 13, 1906. 



Three medium-sized specimens, 



Sfafio/i ^K pi9.—30° 34' 00" north latitude, 129° 22' 00" east lon- 

 gitude, Kusakaki Jima bearing north 10 east, 17.5 miles distant. 

 Depth, 440 fathoms; bottom temperature, 41.8° F. ; bottom, globige- 

 rina ooze. August 13, 1906. 



One hundred and four medium-sized specimens. 



Station No. 4920.— 30° W 00" north latitude, 129° 22' 00" east lon- 

 gitude, Kusakaki Jima bearing north 10° east, 17.5 miles distant. 

 Depth, 440 fathoms; bottom temperature, 41.8° F. ; bottom, globige- 

 rina ooze, August 13, 1906. 



Five specimens. 



Station No. 4975.-33° 21' 30" north latitude, 135° 38' 50" east lon- 

 gitude, Shio Misaki Light bearing north 49° east, 7 miles distant. 

 Depth, 712 fathoms; bottom temperature, 37.5° F. ; bottom, l)rown 

 mud, pel)bles, and foraminifera. August 31, 1906. 



Nine medium-sized specimens. 



Station Nj. 5082.-34:° 05' 00" north latitude, 137° 59' 00" east Ion 

 gitude, Omai Saki Light bearing north 22° east, 33 miles distant. 

 Depth, 662 fathoms; bottom temperature, 37.7° F, ; bottom, green 

 mud, line sand, globigerina ooze. October 20, 1906, 



Seventy medium-sized specimens. 



Station No. 5083.-34° 04' 20" north latitude, 137° 57' 30" east lon- 

 gitude, Omai Saki Light bearing north 23^° east, 34,5 miles distant. 

 Depth, 624 fathoms; bottom temperature, 38.1° F.; bottom, tine gvdy 

 sand and globigerina ooze. October 20, 1906. 



Twentv-eight large specimens. 



This species was obtained at depths var3ang from 361 to 712 fathoms 

 and at temperatures of from 37.5° to 43.4° F., the average depth being 

 483.6 fathoms and the mean temperature being 40.8° F. The speci- 

 mens from Station No. 5083 were the largest, measuring: arms, 106 

 mm.; longest cirri, 50 mm. There is considerable variation in this 

 species in regard to the extent of the first brachials beyond the centro- 

 dorsal. In most of the examples the first brachials are fairly conspicu- 

 ous, but in one or two they do not show at all, so that the first pinnule 

 is borne on the lowest visible arm joint. The arms and cirri are long 



