754 
Transactions of the Society. 
form being a Valvuline modification of Textularia conica , from which 
it is distinguished by the triserial and twisted arrangement of the 
chambers, and the flange which projects over the aperture of the 
mouth. It appears not to have been found before in the fossil state. 
It occurs in zone i., specimen a, very rare ; zone v., very rare ; 
zone xi., 50 ft. from the top, very rare ; 45 ft., very rare ; 35 ft., 
rare ; 25 ft., very rare. 
Valvulina fusca Williamson sp., plate XI. fig. 12. 
Botalina fusca Williamson, 1858, Eec. For. Gt. Br., p. 55, 
plate y. figs. 114, 115. Valvulina fusca Brady, 1884, Chall. Eep., 
yoI. ix. p. 392, pi. xlix. figs. 13, 14. 
This form also is here recorded as a fossil for the first time. Some 
of the specimens found resemble in the minutest details the recent 
specimens figured by Dr. Brady. It is noted as a shallow- water form, 
though found occasionally at as great depths as 500 or 600 fathoms. 
Many of the specimens from the Gault have become detached, but their 
adherent nature can be easily made out. The texture of the shell of 
some of the specimens is much finer than that of the one figured. The 
specimens occur in zone iii., very rare ; zone vii., rare ; zone x., rare. 
Sub-family B ULIMININVE. 
Bulimina d’Orbigny [1826]. 
Bulimina Orbignyi Eeuss, plate XII. fig. 2. 
Bulimina TOrbignyi Eeuss, 1845, Verst, bohm. Kreid., vol. i. 
p. 38, plate xiii. fig. 74. 
This elegant form is easily recognized by the long and gradually 
tapering shell, and by the deeply set oral aperture. It is the largest 
species of Bulimina in the Gault series. Eeuss records it from the 
Gault of Folkestone and of the Ehine, as well as from many localities 
in N. Germany and Bohemia from various strata throughout the 
Upper Cretaceous series. It is fairly wMl distributed in the Gault 
of Folkestone, being found in zone i., specimen b, very rare (small 
var.) ; zone viii., common ; zone ix., rare ; zone x., common ; zone xi., 
45 it. from the top, very rare ; 20 ft., common ; 12 ft., frequent ; 6 ft., 
frequent. 
Bulimina obliqua d’Orbigny, plate XII. fig. 3. 
Bulimina obliqua d’Orbigny, 1840, Mem. Soc. geol. France, 
vol. iv. p. 40, plate iv. figs. 7 , 8. 
A well-known form in the Chalk of France and England. It has 
also been found in the Phosphatic beds of Cambridge (G. E. Vine) 
and previously in the Gault of Kent (T. Eupert Jones in Morris 
Catalogue, 2nd ed.). At Folkestone it occurs in zone viii., frequent ; 
