140 
THE VOYAGE OF H.M.S. CHALLENGER 
Station 3. 
Station 3 (Sounding 4, ), Tenerife to Sombrero (see Chart 6 and Diagram 1). 
February 18, 1873; lat. 25° 45' N., long. 20° 14' W. 
Temperature of air at noon, 67 c ' , 8 ; mean for the day, G6°-G. 
Temperature of waiter at surface, G5°‘0; bottom, 37 o, 0. 
Density at GO F. at surface, 1 ’027 19. 
Depth, 1525 fathoms; deposit, Pterqpod Ooze, containing about 70 per cent, of 
carbonate of lime, manganese concretions, and dead fragments of Coral coated 
wiiii manganese (see Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
9 \.m. sounded in 1525 fathoms, but the machine brought up no bottom ; sounded 
again in 1530 fathoms with a similar result. At 10 a.m lowered dredge with 2 cw r t. at 
•M 11 ! fathoms from it, and with 2200 fathoms of line. At 1 p.m. boats went away 
i" pich up surface animals, and returned at 4 p.m., when the trawl was put over. At 
5. : p.m. the dredge came up w r ith many specimens; a small quantity of the deposit 
was obtained from the basal portions of the large Sponges. At 7 p.m. hauled in the trawl. 
1 coition at noon, 1G0 miles south-w T est of the island of Ferro ; Sombrero Island distant 
24:1b miles. Made good 46 miles. Amount of current 9 miles, direction W. 
1 he following species are recorded in the Zoological Reports from the dredge and 
trawl at this Station : — 
Amnaiai TRoM 
1)kkim;k and 
Tkawi 
Hexactixellida (Schulze, Zool. pt. 53). 
Poliopogon amadou , Wyville Thomson, n.g.,n.sp. Two specimens; obtained at no 
other locality. The only other species of the genus ( Poliopogon 
gigas) was obtained at Station 170a, G30 fathoms. 
Alcv'oxaria (Wright and Studer, Zool. pt. 64). 
Aut i/omastus canariensis, n.sp. One specimen ; obtained at no other locality. 
PUurocor allium johnsoni, Gray. Many fragments (coated with peroxide of 
manganese); obtained also at Station 35, 1125 fathoms. Re- 
corded from Madeira. 
A'-nurlla i rbuscxda (Johnson). Several specimens; obtained at no other locality 
by the Challenger. Recorded from North Atlantic. 
Corals (Moseley, Zool. pt. 7). 
Ci'f/pfohelat pud M.- Edwards and Haime. Several specimens; obtained also at 
Stations 24, 171, 23G and 320, 390 to 775 fathoms. 
Recorded from New' Guinea and South Pacific. 
C aryophylha berteriana, Duchassaing. One specimen and fragments; obtained at 
no other locality by the Chnllenger. 
