Foraminifera of the Gault of Folkestone. By F. Chapman. 323 
zone x., frequent; zone xi., 55 ft. from the top, frequent; 50 ft., 
frequent; 45 ft., rare; 40 ft., frequent; 35 ft., frequent; 30 ft., 
very rare ; 25 ft. very rare. 
Haplo phragrn ium latidorsatum Bornemann sp., plate Y. figs. 12 
a and b. 
Nonionina latidorsata Bornemann, 1855, Zeitschr. d. deutsch. 
geol. Gesell., vol. vii. p. 339, plate xvi. figs. 4 a and b. 
This form is readily distinguished from U. nonioninoides by its 
greater breadth, and in its consisting of fewer chambers, which rarely 
number more than six ; in this form also the wall of the test is com- 
paratively thick. Its arenaceous test is usually of a brownish-white 
colour, in the specimens from the Gault. In recent soundings it 
occurs as a deep-water form ; and has been recorded fossil from 
the Septaria-clay of Hermsdorf by Bornemann, from the Salt-clay 
of Wieliczka in Galicia by Reuss ( II . crassum ), and from the 
Clavulina-Szaboii beds of Hungary by Hantken. Zone i., specimen 
a, very rare; zone i., specimen b, very rare; zone ii., specimen a, 
common; zone ii., specimen b, frequent; zone ii., specimen c, 
frequent; zone iii., rare; zone v., frequent; zone viii., frequent; 
zone ix., very rare ; zone x., very rare ; zone xi., 55 ft. from the top, 
very rare ; 45 ft., rare ; 35 ft., very rare ; 12 ft. very common ; 
6 ft., very common. 
Uaplophragmium latidorsatum var. papillosa , plate V. fig. 13. 
This variety resembles the preceding form in all its general 
characters, but differs in the appearance of its arenaceous test which 
has distributed over the surface numerous rough papillae which are 
composed of the same moderately fine sandy material as the rest of 
the shell. These tubercles are most numerous along the dorsal edge 
of the test. There are about six chambers in the specimens found. 
Diameter 1/40 in. Zone x., two specimens. 
Uaplophragmium (equate Homer sp., plate VI. figs. 1, 2, and 3. 
Spirolina sequalis Romer, 1840-1841, die Yerstein. d. nord- 
deutsch. Kreidegeb., p. 98, plate xv. fig. 27. Haplophragmium sequale 
Rom. sp., Reuss, 1860, Sitzungsber. k. Ak. Wiss. Wien, vol. xl. 
p. 218, plate , xi. figs. 2 and 3. H. sequale Rom. sp., Reuss, 1862, 
Sitzungsber. k. Ak. Wiss. Wien, vol. xlvi. p. 29, plate i. figs. 1-7. 
This species differs from H. agglutinans d’Orb. by the absence of 
an umbilical depression in the initial spiral portion, and in the infla- 
tion instead of compression of the spiral. It is a very variable form 
in the Gault clays ; the two varieties figured show its chief characters. 
A section of the shell, not quite median, shows the chambered 
structure, which is represented on plate VI. fig. 3. Recorded by 
2 a 2 
