596 
THE VOYAGE OF H.M.S. CHALLENGER. 
the Rockall Bank ; whilst in the opposite hemisphere it reaches as far as about lat. 46° S. 
in the Southern Ocean. 
The specimens originally described by Egger were fossils from the Miocene of Lower 
Bavaria. Examples of Globigerina conglomerates from the Pliocene of Kar Nicobar, for 
w r hich I am indebted to Dr. Schwager, present characters almost identical with those 
of many of the recent shells, though sometimes showing an approach towards the general 
form of Globigerina conglobata. The author’s figure ( loc . cit.), is not a very satisfactory 
rendering of their distinctive characters. 
Globigerina cretacea, d’Orbigny (PI. LXXXII. fig. 10, a-c [?]. Fossil specimen, 
fig. 11 , a-c.). 
Globigerina cretacea,, d’Orbigny, 1840, Mem. Soc. geol France, vol. iv. p. 34, pi. iii. figs. 12-14. 
„ foveolata (pars), Ehrenberg, 1854, Mikrogeologie, pi. xxiv. fig. 49. 
5) 
libani, 
Id. 
Ibid. 
pi. xxv. fig. 30. 
Planulina pachyderma, 
id. 
Ibid. 
pi. xxv. fig. 31. 
Rotalia pertusa, 
Id. 
Ibid. 
pi. xxiv. fig. 41. 
JJ 
aspera, 
Id. 
Ibid. 
pi. xxvii. figs. 57, 58 ; — pi. xxviii. 
fig. 42; — pi. xxxi. fig. 44. 
?> 
globulosa, 
Id, 
Ibid. 
pi. xxvii. fig. 60;- — pi. xxviii. figs. 
40,41; pi. xxxi. figs. 40, 41, 43. 
5 J 
densa, 
Id! 
Ibid. 
pi. xxvii. fig. 62. 
}) 
guaterna, ■ 
Id. 
Ibid. 
pi. xxvii. fig. 53; — pi. xxviii. 
fig. 34. 
5? 
rosa, 
Id. 
Ibid. 
pi. xxvii. fig. 54. 
pacing omphala; 
Id. 
Ibid. 
pi. xxvii. fig. 55. 
>5 ’ 
tracheotetras, 
Id. 
Ibid. 
pL xxviii. fig. 35. 
5J 
perforata, 
Id. 
Ibid. 
pi. xxviii. fig. 36 ; — pi. xxix. fig. 2. 
5 J ' 
protacmcea, 
Id. 
Ibid. 
pi. xxviii. fig. 37. 
55 
laxa, 
Id. 
Ibid. 
pL xxviii. fig. 38 ; — pi. xxix. fig. 1 ; 
pi. xxxi. fig. 42. 
55 ' 
centralis, 
Id. 
Ibid. 
pi. xxviii. fig. 39. 
Globigerina cretacea, Brady, 1879, Quart. Journ. Mier. Sci., vol. xix., N. S., p. 285. 
Test rotaliform, much compressed ; superior face flattened or only slightly convex, 
inferior side depressed towards the centre and excavated at the umbilicus, periphery 
obtuse and lobulated ; composed of about three tolerably distinct convolutions, the outer- 
most consisting of from five to seven segments segments relatively small, subglobular ; 
apertures opening into an umbilical vestibule. Diameter, -g^th inch (0'5 mm.). 
Globigerina cretacea resembles Globigerina dubia in the regular Rotaliform construction 
of the test and in the conspicuous size of the umbilical cavity, but its contour is 
comparatively thin and outspread, and, though the segments are often as numerous, 
the entire shell seldom attains the same dimensions as that of the latter species. 
The synonymy, so far as relates to Ehrenberg’s figures, must be taken with a certain 
