Foraminifera of the Gault of Folkestone. By F. Chapman. 589 
45 ft., excessively common ; 40 ft., excessively common ; 35 ft., ex- 
cessively common ; 30 ft., excessively common ; 25 ft., excessively 
common ; 20 ft., excessively common ; 12 ft., common ; 6 ft., 
frequent. 
Globigerina sequilateralis Brady, plate XIII. fig. 7. 
Globigerina sequilateralis, Brady, 1879, Quart. Journ. Micr. 
Sci., vol. xix. N.S. p. 7. Id., 1884, Cliall. Bep., vol. ix. p. 605, 
plate lxxx. figs. 18-21. Wright, 1885-6, Proc. Belf. Nat. Field 
Club for 1884-5, Appendix, p. 332, plate xxvii. figs. 9 a , h. Chap- 
man, 1892, Quart. Journ. Geol. Soc., vol. xlviii. p. 517, pi. xv. 
figs. 14 a , b. 
The Cretaceous specimens of G. sequilateralis differ from the 
recent examples in having the early spiral portion of the test closely 
coiled. This difference is merely trivial, and it is better to relegate 
the Cretaceous examples to the same species. The essential character 
of the test is the depression of the spiral in the umbilical area so 
that it is apparent on both sides ; hence the equilateralness of the 
form. 
This species has been noted from the Chalk of Ready Hill 
(Wright) ; from the Neocomian beds of Surrey, and the Chalk of 
Lewes and Taplow (Chapman) ; and from the Chalk of the Island of 
Bugen (by Ehrenberg as Phanerostomum asperum). 
G . sequilateralis was found in the Gault in zone i. spec, b, rare ; 
zone ii. spec, a, very rare ; zone iii. very rare ; zone iv. frequent ; 
zone v. rare ; zone viii., rare ; zone ix., very rare ; zone xi., 45 ft. from 
the top, very common ; 40 ft., common ; 35 ft., very common ; 30 ft. 
very common ; 25 ft., common ; 20 ft., frequent. 
Spmroidina d’Orbigny [1826]. 
Sphseroidina bulloides d’Orbigny, plate XIII. fig. 8. 
Sphseroidina bulloides d’Orbigny, 1826, Ann. Sci. Nat., vol. vii. 
p. 267, No. 1, — Modele, No. 65. S. austriaca d’Orbigny, 1846, For. 
Foss. Yien., p. 284, plate xx. figs. 19-21. S. bulloides Brady, 1884, 
Chall. Bep., vol. ix. p. 620, pi. lxxxiv. figs. 1-7. Burrows, Sherborn, 
and Bailey, 1890, Journ. Boy. Micr. Soc., p. 562, plate xi. figs. 20, 
21 . 
This species has been recorded from the Bed Chalk of Speeton 
(Burrows, Sherborn, and Bailey) ; the Chalk of Meudon and of the 
Island of Bugen ( hhrenberg) ; and it is a well-distributed form 
throughout the Tertiary formations. As a recent organism it appears 
to be unrestricted in its bathymetrical distribution. 
S. bulloides was found in the Gault of Folkestone in zone v. 
very rare. 
