Foraminifera of the Gault of Folkestone. Bij F. Chapman. 753 
portion. It is characteristic of the Cretaceous strata, and has also 
been found in the Middle Tertiary beds of Hungary (Hantken). 
The recent forms described by Brady were found in and near the 
tropics at depths varying from 11 to 675 fathoms. In the Gault of 
Folkestone it appears in zone x., very rare ; zone xi., 50 ft. from the 
top, frequent ; 45 ft., common ; 35 ft., very rare ; 25 ft., very rare. 
Gaudryina oxycona Beuss, plate XII. fig. 1 a, b. 
Gaudryina oxycona Reuss, 1860, Sitzungsb. k. Ak. Wiss. Wien, 
vol. xl. p. 229, plate xii. fig. 3 a, b c. 
The figure given by Reuss, from a Westphalian-Chalk specimen, 
is more regular in the general outline of the shell, and less compressed 
than the Gault specimens ; otherwise they agree in all essential 
characters ; Reuss also found this species in the Gault of the Rhine. 
Fig. 1 b shows the three-chambered commencement of the aboral 
pointed end slightly fractured. The species has also been found in 
the Gault of Montcley in the north of France (Berthelin). In the 
Folkestone Gault this form occurs in zone xi., 12 ft. from the top, 
common ; 6 ft., very rare. 
Gaudryina dispansa, plate XI. fig. 10 a, b. 
A form of Gaudryina of a somewhat distorted appearance was met 
with in the Gault, reminding one at first glance of the G. baccata 
of Schwager.* It appears, however, to possess decided characters of 
its own ; the chambers (which would, in their normal condition, be 
arranged as in G. pupoides) are developed in a series flattened in the 
direction of the length of the shell, whilst the margins of the chambers 
are slightly overlapping. In G. baccata the chambers are always 
more or less inflated. The texture of the test of G. dispansa is the 
same as that of G. pupoides; and the aperture a Textularian slit, 
slightly twisted. This species attains the length of 1/40 in. It is 
found in zone viii., very rare ; zone x., rare ; zone xi., 40 ft. from the 
top, rare. 
Valvulina d’Orbigny [1826]. 
Valvulina conica Parker and Jones, plate XI. fig. 11 a, b. 
Valvulina triangularis Parker and Jones, 1857, Ann. and Mag. 
Nat. Hist., ser. 2, vol. xix. p. 295, plate xi. figs. 15, 16. V. trian- 
gularis var. conica Parker and Jones, 1865, Phil. Trans., vol. civ. 
p. 406, plate xv. fig. 27. V. conica Brady, 1884, Chall. Rep., 
vol. ix. p. 392, plate xl:x. figs. 15, 16. 
This is a conspicuous form in the Gault series, and agrees very 
well with the figures and descriptions of V. conica , with the exception 
that the Gault specimens are free, and without any signs of ever 
having been attached. There is just the possibility of the above 
* Novara-Exped., 4to, Wien. Geol. Theil, ii. (1866) p. 200, pi. iv. fig. 12. 
