Foraminifera of the Gault of Folkestone, By F. Chapman. 11 
Sci. Cracow (Pamiet. Wydz. III., Akad. Umiej. Krak.), vol. xvii. p. 8. 
pi. viii. fig. 6. 8. minima , Id., ibid., p. 9, pi. viii. fig. 7. S. difficilis, 
Id., ibid., p. 10, pi. viii. fig. 8. 8. tenuiseptatd Egger, 1893, Abliandl. 
k. Bayer. Ak. Wiss., Cl. ii. vol. xviii. pp. 218 and 223, pi. i. figs. 48, 
49. S. ( Ophthalmidium ) complanata , Id., ibid., p. 225, pi. iii. figs. 7, 
8. 8. nitida Jones, 1895, Monogr. Crag. Foram., Pal. Soc., p. 112, 
pi. v. fig. 3, woodcuts figs. 5, 6, p. 103 (woodcut fig. 5 is similar in 
section to the Gault specimen). 
For an extended synonymy of this species see Jones’s Monograph 
of the Crag Foraminifera, 1895. The typical form is characterised 
by the convex surface of the chambers, which may or may not be 
further relieved by subordinate limbation. The whole surface of the 
test is more or less flat, since it belongs to the group of which 
S. planulata Lam. sp. is the type. The Gault specimen is roundly 
ovate, the Jurassic forms are more often elongate. 
8, nitida is known from Jurassic deposits (Terquem, Wisniowski) ; 
and it is well distributed through the Tertiary series. The variety 
from the Crag of Sutton has the outer edges of the last two chambers 
limbate. As a recent Foraminifer 8. nitida is found in the shallower 
waters of the Mediterranean and the Tropics. 
The species was found in the Gault of Folkestone in zone x., one 
specimen. 
Family ASTRORHIZIDZE. 
Sub-family BHABDAMMININM 
Bhizammina H. B. Brady [1879]. 
Bhizammina indivisa Brady, plate II. fig. 4. 
Bhizammina indivisa Brady, 1884, Chalk Rep., vol. ix. p. 277,. 
pi. xxix. fig. 5-7. 
“ Test free, cylindrical, flexible ; consisting of an unbranched 
chitino-arenaceous tube, often tapering towards the ends. Apertures 
terminal. Length 1/3 inch, more or less.” — H. B. Brady. 
The Gault specimen agrees, as far as is possible in a fossil, with 
the above description. I have also met with several specimens 
closely comparable with this from the Chalk-marl of Charing, Kent. 
B. indivisa has also been recorded, in a list of American fossil 
Foraminifera, by Dr. Anthony Woodward, from the Pliocene of 
Woodford Corners, Peering, Maine.* 
Dr. Brady records this species as occurring especially in Globi- 
gerina-ooze of moderate depths, so that its appearance in the Gault is 
not wholly unexpected. Its natural fragility and shajie would tend 
to prevent its ready preservation. 
The only specimen was found in zone xi., 50 ft. from the top. 
* “ Fossil Foraminifera of North America,” ‘ Practical Microscopy,’ vol. v. No. 10, 
1894, p. 201. 
