SUMMARY OF RESULTS. 
1159 
Station 311 (Sounding 460), Gulf of Penas to Sandy Point through Magellan 
Strait (see Chart 41). 
January 11, 1876 ; lat. 52° 45' 30" S., long. 73° 46' W. 
Temperature of air at noon, 50°'0 ; mean for the day, 48°‘3. 
Temperature of water at surface, 50°'0 ; bottom, 46° '0. 
Density at 60° F. : — 
Surface, . 
. 1-01904 
100 fathoms, 
. 1-02452 
25 fathoms, 
. 1-02271 
200 
. 1-02388 
50 „ 
. 1-02412 
Bottom, 
. 1-02454 
Depth, 245 fathoms ; 
deposit. Blue Mud, containing 34'07 
per cent, of carbonate 
of lime (see Murray and Renard, Deep-Sea Deposits Chall, Exp.). 
At 3.30 A.M. got up steam. At 4.30 a.m. proceeded out of Innocentes Bay. At 
10.30 A.M. stopped and sounded in 245 fathoms. Put over trawl, which came up at 
12.30 P.M. containing numerous specimens. The carbonic acid was determined in bottom 
water and amounted to 51 '2 milligramm.es per litre. Proceeded for Port Churruca and 
anchored there at 2.45 p.m. in 14 fathoms. Exploring parties went on shore. 
The following species are recorded in the Zoological Reports from the trawl at this 
Station ; — 
Monaxonida (Ridley and Dendy, Zool. pt. 59). 
Gellius carduus, n.sp., var. magellanica, nov. One specimen ; the species obtained 
also at Stations 145 and 148. 
Tedania tenuicapitata, Ridley. Several specimens ; obtained also at Stations 308 
and 314. 
Trachy tedania patagonica, n.sTp. One specimen (Station doubtful); obtained also 
at Station 308. 
lophon pattersoni (Bowerbank). Numerous fragments ; obtained also at Stations 135 
and 308. 
Myxilla mollis, n.sp. Five specimens (Station 308 or 311, or both). 
,, nohilis, n.sp., var. patagonica, nov. One specimen and fragments ; the 
species obtained also at Stations 148, 307 (var. hacillifera), 
and 320. 
Tetractinellida (Sollas, Zool. pt. 63). 
Cydonium magellani, n.sp. Several specimens ; obtained also at Station 308. 
Station .311. 
Animals from 
Trawl. 
