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REPORT on the FORAMINIFERA. 603 
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Cretaceous form, Globigerina elevata (Mem. Soc. geol. France, vol. iv. p. 34, pi. iii. figs. 
15, 16), which, approaches the same relative dimensions, and Reuss has a somewhat 
similar variety, Globige'f ww* trochoides (Haidinger’s Naturw. Abhandl., vol. iv. p. 37, pi. 
iv. fig. 5). It is difficult to determine from the figures whether these are really distinct 
from the present species. Minute specimens of analogous contour, such as those por- 
trayed in PI. T AX A di figs. 8, 9 are not uncommon in dredged ooze, but they generally 
bear the appearance of immature shells. 
Globigerina r'ubra is found in the North and South Atlantic, the North and South 
Pacific, the Ind' ian Ocean, and the Mediterranean. It is most abundant in the tropical part 
of the Atlantic* an d is comparatively rare in the North Pacific. Its true home is in the 
tropics, nevertheless it spreads northwards nearly to lat. 49° N., and southwards to lat. 36° S. 
Unless tl ie Cretaceous specimens already referred to pertain to this species, there is 
no record of its occurrence in the fossil condition. 
Globige r fi' na conglobata, H. B. Brady (PI. LXXX. figs. 1-5 ; PI. LXXXII. fig. 5). 
Globigerina conglobata, Brady, 1879, Quart. Journ. Micr. Sci., vol. xix., N. S., p. 72. 
Test spiral, subglobular ; earlier segments small and compactly arranged ; later 
segments, particularly the three forming the final convolution, large and inflated, and 
disposed s° as to form a convex base ; aperture consisting of a single arched opening at 
the inferio r umbilical margin of the final segment, and a number of rounded orifices situ- 
ated in thd sutural depressions of the superior face of the test ; walls thick and coarsely 
perforated. Pelagic specimens generally more or less spinous. Diameter about 
inch (075 n am -)- 
This is a paodification of the “ rubra ” type, in which the segments are few in number, 
and those of the final whorl are of preponderating size, and so combined that the test is 
almost equally convex on all sides. The species is in fact nearly isomorphous with 
Sphceroidir ia bulloides. Adult specimens are very stoutly built, the walls sometimes 
attaining & thickness of inch (0T mm.) or more. The entire shell is coarsely per- 
forated, tl ie pore-canals measuring about ^yyth inch (0'0084 mm.) in diameter. Surface- 
shells arc 5 generally found in the spinous condition. 
Globed crina conglobata occurs in the tow-net collections as well as in the bottom 
dredoings from both North and South Atlantic and North and South Pacific. Its area 
of distribution appears to extend about from lat. 40° N. to lat. 35° S. (from the Azores 
to th e Cape of Good Hope) in the Atlantic, but scarcely so far, either north or south, in 
the pacific. 
qlhere is no evidence of its occurrence in the fossil state ; but Reuss figures a some- 
what similar form from the Vienna Tertiaries (Denkschr. d. k. Akacl. Wiss. Wien, vol. i. 
pi. xl y ii- fig- 7), as a variety of Globigerina regularis, d’Orbigny. 
