FORAMINIFERA OF THE FUNAFUTI ATOLL. A415 
in comparative abundance from 50 to 200 fathoms. At a 
depth of 50-60 fathoms it appears to be in greatest profusion, 
associated with form B. 
The Pelagic Foraminifera. 
On reference to the foregoing Distribution Table it will be 
noticed that the pelagic species found in the dredgings almost 
uniformly increase in number according to the depth of water, 
and concurrently as the open water of the ocean is approached. 
This is exactly what might be expected, since the sides of the 
atoll present an even slope, and there are no other islands in 
the vicinity. An exception to this rule is Globigerina conglobata, 
which is frequently found in the shallow sands round the atoll. 
The thickness of the test in this species is a striking feature, 
and is comparable with other pelagic forms originally thin- 
shelled, but which become possessed of a thickened shell-wall on 
assuming the conditions of life in common with other bottom- 
living forms. 
The list of pelagic species occurring at Funafuti is as 
follows :— Globigerina bullovdes, G. bulloides var. triloba, G. rubra, 
G. Dutertret, G. pachyderma, G. suberetacea, G. equilateralis, 
G. conglobata, G. sacculifera, G. digitata, G. dubia, Orbulina 
universa, Caudenia nitida, Spheroidina dehiscens, Pullenia 
obliquiloculata, Cymbalopora (Tretomphalus) bulloides, Pulvi- 
nulina Menardi, P. tumida, and P. canariensis. 
The pelagic species noted from the beach-sands are Globigerina 
sacculifera and Cymbalopora (Tretomphalus) bulloides; whilst 
from the shallowest dredgings of the lagoon on the open side 
small specimens of Globigerina bulloides and its variety triloba 
have occurred with some frequency. 
In bringing to a conclusion the main results on the Forami- 
nifera of the dredged ~aterial down to 200 fathoms from 
Funafuti, it gives me much pleasure to reiterate my sincere 
thanks to those who have so carefully collected the material 
upon which this examination has been based; as well as to 
Prof. Judd, C.B., for facilities very kindly afforded for studying 
the collections at the Royal College of Science. My thanks are 
also due to my wite for assistance in elaborating this work, and 
to Mr. . J. Tailin for his help in the selection of specimens. 
29* 
