106 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station 310. — January 10, 1876. Lat. 51° 30' S., long. 74° 3' W. Sarmiento 
Channel. Sounding ; depth, 400 fathoms ; bottom temperature, 7 °' 9 C. ; 
mud. 
Station 311. — January 11, 1876. Lat. 52° 50' S., long. 73° 53' W. Sounding; 
depth, 245 fathoms ; bottom temperature, 7° ’7 C.; mud. 
The five Stations last enumerated represent a line of soundings amongst the 
islands on the west coast of Patagonia. The quantity of material available 
for examination from each locality was exceedingly small, but it was of the 
same character throughout, and sufficiently revealed the general aspect of 
Rhizopod-fauna. The same sub-arctic species prevailed as at the preceding 
four Stations, with the addition of a varying proportion of some of the 
smaller Arenaeea, such as Reophax scorpiurus, Haplophragmium latidor- 
satum and Haplophragmium canariense, Clavulina communis, Valvulina 
fusca, and an occasional starved specimen of Cyclammina cancdlata. 
Station 313. — January 20, 1876. Lat. 52° 20' S., long. 68° O' W. Magellans 
Strait. Depth, 55 fathoms; bottom temperature, 8° '8 C.; sand. 
Very muddy sand, nearly barren of Foraminifera. Contains only a few Miliolce, 
Truncatulince, Discorbince, and other shallow- water forms, in starved con- 
dition. 
P. Stations 314 to 347. — South Atlantic, from Magellans Strait to the Falkland 
Islands, and thence to Buenos Ayres. From Buenos Ayres eastward to 
about long. 13° W . , and then nearly direct north by the Island of Ascension 
to the Equator at about long. 14° W. 
Station 315 A. — February 1 , 1876. Stanley Harbour, Falkland Islands. Depth, 6 
fathoms. 
Black mud, with broken shells. Much richer in Ostracoda than in Foraminifera, 
which latter consisted chiefly of starved varieties of Rotalia, Polystomella, 
Lagena, and Bulimina. The only species of any particular interest were 
Patellina corrugata and Bulimina elegantissima. 
Station 317. — February 8, 1876. Lat. 48° 37' S., long. 55° 17' W. North of the 
Falkland Islands. Depth, 1035 fathoms; bottom temperature, 1 0, 7 C.; hard 
ground. 
The material examined was a small quantity of coarse, shelly sand, with a 
sprinkling of little black stones. The Foraminifera it contained were for the 
