‘>12 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 233b. 
Ammaus from 
1)rri>ge and 
Trawl. 
Station 233b (Sounding 373), off Japan (see Chart 35). 
May 26, 1875 ; lat. 34° 18' N., long. 133° 35' E. 
Temperature of air at noon, 71°’8 ; mean for the day, 67°‘9. 
Temperature of water at surface, 66° '3. 
Demsity at 60° F. at surface, 1 ’02631. 
Depth, 15 fathoms ; deposit. Blue Mud, containing 4 ’29 per cent, of carbonate of 
lime, and numerous oval-shaped pellets, believed to be the dung of Holothurians 
(see Murray and Renard, Deep-Seg, Deposits Chall. Exp.). 
At 5 A.M. got up steam. At 6.15 a.m. weighed anchor and proceeded through the 
channels leading from Harima Nada to Bingo Nada. At 9.5 a.m. passed Odutsi Island. 
At 11.20 A.M. stopped to dredge in about 12 fathoms to the east of the headland of 
.\keno Mi.saki. At 11.50 a.m. proceeded. At 12.40 p.m. stopped, and put over trawl 
in about 15 fathoms. The dredge came up with a bag full of mud, and the trawl came 
up at 1.30 P.M. with numerous specimens. Proceeded towards Miwara. After crossing 
the northern part of the Bingo Nada, the ship stopped at 4.15 p.m. off the village of 
Matsuhama, and close to the town of Miwara, both situated on the mainland of Nipon, 
and anchored in 14 fathoms. 
The following species are recorded in the Zoological Reports from the dredge and trawl 
at this Station ; — 
Asteroidka (Sladen, Zool. pt. 51). 
Astr&pecten jaj'ionicus, Muller and Troschel. Many specimens ; obtained also at 
Station 233 and Yokohama. 
OpHiUROiDHA (Lyman, Zool. pt. 14). 
Ophiofjhjpha sinensis, Lyman. Several specimens ; obtained also at Yokohama. 
Amphiura deprcssa, Lyman (?). Obtained also at Fiji. 
Echinoidp:a (Agassiz, Zool. pt. 9). 
Kchinocardium australe, Gray. Obtained also at Port Jackson. [Recorded in 
error from Station 234]. 
S:lnuister jcqjonicus, n.sp. Several specimens ; obtained also at Stations 188, 233, 
Yokohama, and Ilong Kong. 
IIoLOTHURlOIDKA (TliCcl, Zool. pt. 39). 
Synaptn disLincta, Marenzeller. Several fragments; obtained also at Station 233. 
Annelida (MMntosh, Zool. pt. 34). 
CJdoeia Jiava (Pallas). Two .specimens ; obtained also in Arafura Sea (?). 
Dnsyhranchus (?) sp. Tine specimen. 
