614 
THE VOYAGE OF H.M.S. CHALLENGED. 
only Foraminifer with which it is likely to be confounded is Globigerina ceguilateralis ; 
but in that species the shell is more compressed and the spire evolute ; the walls are 
thicker, the perforations larger, and the aperture comparatively small and inconspicuous ; 
besides which the surface is rarely spinous, and the spines, when present, are small and 
not serrated. 
To the original description in the “ South America ” memoir, d’Orbigny appends the 
following remark : — “ Cette espece est une rare exception parmi les Foraminiferes essen- 
tiellement cotiers, puisque nous l’avons prise en pleine mer, a une grande distance des 
cotes du Perou, dans l’ocean Pacifique, par 20° de latitude sud et 89° de longitude ouest 
de Paris, oh elle nous a paru tres rare.” Even now, with a much wider knowledge of 
the life-conditions of the Foraminifera, Hcistigerina pelagica is one of the very small 
number of species of which it can be said with any approach to certainty that it lives 
only at the surface of the ocean. A few of the thicker-shelled specimens are found 
from time to time in bottom-dredgings, but they are by no means common, and are seldom 
even approximately complete. The spines are invariably broken off, and when the shells 
are not otherwise fractured the surfaces are worn and the texture rotten. Of these 
figs. 5-8 are fair examples. 
Living specimens of Hastigerina pelagica were collected by the Challenger natural- 
ists at five points in the North Atlantic, at two in the South Atlantic, at three in the 
South Pacific, and at twelve in the North Pacific ; and on the cruise of the “ Triton ” in 
1882, the species was obtained in great abundance in the Faroe Channel. Dead shells 
have been noticed in the dredged material from three Stations in the North Atlantic, 
from five in the South Atlantic, and from three in the South Pacific, as well as in sands 
from the Gulf of Suez. 
No fossil remains of the species have hitherto been recognised. 
Pullenia , Parker and Jones. 
Nonionina, pars, d’Orbigny [1826], Reuss, Bornemann, Costa, Parker and Jones, Karrer, 
Scblicbt. 
Pullenia, Parker and Jones [1862], Carpenter, Reuss, Karrer, Pourtales, M. Sars, Miller and 
Vanden Broeck, Hantken, Wright, Norman, Brady, Marsson, Seguenza, &c. 
The zoological features of the genus Pullenia have been variously estimated by dif- 
ferent systematists. By d’Orbigny and other earlier authors the typical species were 
placed amongst Nonionince, and it was not until 1862 that their distinct structure and 
affinities were pointed out by Parker and Jones. In Carpenter’s “Introduction” the genus 
was classed in the Sub-family Globig evince, between Globigerina and Splicer oidina, but 
this mode of treatment has not hitherto met with general acceptance. Reuss, even in his 
