FORAMINIFERA FROM THE NORTH ATLANTIC AND ARCTIC OCEANS. 331 
Nodosarince , at 160 fathoms, just within the Arctic Circle,— such forms as are known 
under the subgeneric names of Glandulina , Nodosaria, Dentalina, Marginulina, and 
Cristellaria, and are abundant in some warm seas at less depths, and in the fossil state 
in the Chalk and other deposits of Secondary and Tertiary age. Where the “ Celtic 
Province” (under the name “Virginian”) impinges on the American coast of the 
Atlantic, between lat. 30° and lat. 50° N., some soundings made by the Coast-survey of 
the United States, at from 20 to 105 fathoms, yielded to Professor Bailey’s search 
several Dentalince, Marginulince , and Cristellarice of good size. (See Appendix II.) 
The Mollusca obtained by Messrs. MacAndrew and Barrett at Omnoes Oe, Nordland, 
at from 30 to 50 fathoms, half-a-mile from shore (the dredging No. 2 in our list above), 
are enumerated in Dr. Woodward’s ‘Manual of Mollusca, Recent and Fossil,’ p. 434; 
and a list of the shells from an equivalent dredging to our No. 6 (if not the same) is 
given at p. 435. 
4. From the North Atlantic Ocean, between 52° 25' and 48° north latitude. Deep-sea 
soundings in the North Atlantic between Ireland and Newfoundland, made in Her 
Majesty’s Ship ‘ Cyclops,’ by Lieut.-Commander Joseph Dayman, in June and July 
1857. See the Admiralty Report, with map and plates, and an Appendix by Pro- 
fessor Huxley, 8vo, 1858. Thirty-nine of these soundings, from 43 to 2350 fathoms, 
were examined. See Table V. and Map, Plate XII. 
The materials confided to us were small portions (about thimblefuls) of thirty-nine 
selected soundings, from out of a hundred and two. 
This collection affords as fair an exposition of the Foraminiferal fauna of the parti- 
cular tract of sea-bottom examined as the limited amount of material brought up by 
the sounding-machine can be expected to give. The other materials (organic and inor- 
ganic) besides Foraminifera are shown in Tables VI. & XII. 
Three soundings, at from 43 to 90 fathoms off the coast of Ireland, at about 30 miles, 
60 miles, and 75 miles off shore respectively (Nos. 39 [102], 38 [100], 37 [99]), indicate 
the Foraminifera there inhabiting the “Coral-zone”; here th e Nodosarince are rare and 
small ; Lagence rather more common ; Orbulina still more common ; Globigerina rare ; 
the Rotalince ( Planorbulina , Discorbina , Rotalia, and Pulvinulina) are represented, 
though not at all abundantly. Polystomella has its northern form (P. striatopunctata) 
here and little else ; Cassidulina, Uvigerina, Bulimina, and Textularia are plentiful ; 
Miliola and Lituola are comparatively poor both in number and size. 
At different depths, ranging from 223 to 415 fathoms further westward along the 
line of soundings, and nearly to the brink of the marginal plateau, this same fauna, 
with some exceptions and a few additions, continues ; but Globigerina increases in size 
and numbers; and so do Planorbulina TJngeriana and Pulvinulina Menardii , with its 
subvariety Micheliniana. 
Beyond and at the foot of the marginal plateau, the first sounding (15° & W. long.) 
is at 1750 fathoms, and here we find very few Foraminifera, only Orbulina, Globigerina , 
Pulvinulina Canariensis, and Cassidulina , the two latter being small and rare. Further 
