144 
the VOYAGE OF H.M.S. CHALLENGER. 
Stati >x 5. 
Station 5 (Sounding 49), Tenerife to Sombrero (see Chart G and Diagram 1). 
February 21, 1873 ; lat. 24° 20' N., long. 24 c 28' W. 
Temperature of air at noon, 66°‘8 ; mean for the day, 66° ‘4. 
Temperature of water : — 
o 
Surface, .... 68‘0 
100 fathoms, . . . 62-6 
200 „ ... 57-2 
300 „ ... 52-5 
400 „ ... 49-0 
O 
500 fathoms, 
46-3 
1000 „ 
40 0 
1500 „ 
37-5 
Bottom, . 
37-0 
Density at 60° F. at surface, 1 ‘02753 ; bottom, 1 ‘02744. 
Depth, 2740 fathoms; deposit, Red Clay, containing 12‘00 per cent, of carbonate 
of lime (see Murray and Eenard, Deep-Sea Deposits Chall. Exp.). 
At 2.15 p.m. proceeded under steam, head to wind as necessary for sounding, and 
sounded at 3 p.m. in 2740 fathoms. At 5 p.m. put over dredge, with 2 cwt. attached 
40' f thorns from the dredge, and at 7.20 p.m. veered dredge-rope to 3400 fathoms. At 
i 15 a m. next morning commenced heaving in dredge, which came up at 5.45 a.m. full 
of Red Clay. 
Position at noon, about 500 miles south-west of Tenerife ; Sombrero Island distant 
2220 miles. Ma.de good 144 miles. Amount of current 14 miles, direction S. 78’ W. 
A MMAIA fHOM 
Dkkimir. 
The following species are recorded in the Zoological Reports from the dredge at 
this Station : — 
Ostuacoda (Brady, Zool. pt. 3). 
(Jyt/i^r dasyderma, n.sp. Widely distributed; obtained at Stations 5, 70, 85, 
122. 146, 1G4, 167, 185, 191, 218, 246, 296, 300, 302, 305, 
311, 317, 332, 335, and 346, 150 to 2740 fathoms. 
Lamfllibhanchiata (Smith, Zool. pt. 35). 
Lido ultima , n.sp. One specimen and single valve; obtained at no other locality. 
I.n npsis cristata, Jeffreys, var. (?). One specimen and a few odd valves ; obtained 
at no other locality by the Challenger. 
Area (Si'fipJuirca) ituvyuisculpta, n.sp. One specimen ; obtained also at Station 24, 
390 fathoms. 
In addition, two apparently new forms of Polyzoa are noted in the Station-book. 
Foraminikkra (Brady, Zool. pt. 22). — The following species of Foraminifera were 
observed during the examination of the deposit at this Station (see also Murray and 
