THE ANNALS 
AND 
MAGAZINE OF NATURAL HISTORY. 
[FIFTH SERIES. ] 
No. 6. JUNE 1878. 

XLIX.—On the Reticularian and Radiolarian Rhizopoda 
(Foraminifera and Polycystina) of the North-Polar Eape- 
dition of 1875-76. By Henry B. Brapy, F.R.S. 
[Plates XX. & XXI.] 
FORAMINIFERA. 
Amonest the collections brought home by Capt. H. W. 
Feilden, R.A., the naturalist to the North-Polar Expedition 
which sailed in 1875 under the command of Capt. Sir G. 
Nares, R.N., were a number of gatherings of material which 
had been laid aside from time to time for examination with 
respect to Microzoa and Microphyta. There were in all some 
fifty or sixty packages; and after the Diatomacee had been 
determined, Capt. Feilden was kind enough to place them in 
my hands for the investigation of the Foraminifera and Poly- 
cystina. The material consisted for the most part of sound- 
ings; but there were a few samples of dust and dirt from 
discoloured ice, and of mud from beds of glacial deposit of 
greater or less age. ‘The soundings were from depths of from 
10 to 220 fathoms; and the quantity of each was compara- 
tively small. The samples from mud-beds were larger, and 
yielded pretty good series of Foraminifera; but as they exhibit 
. a fauna which is practically identical with that of the present 
sea-bottom at moderate depths in the same latitudes, they 
require no separate treatment. The dust from ice-hummocks 
and similar positions gave no Rhizopoda worth recording. 
Ann. & Mag. N. Hist. Ser. 5. Vol. i. 23 
