Foraminiferci of the Gault of Folkestone. By F. Chapman. 585 
5 rounded costae ; aperture ectosolenian, and the aboral extremity 
minutely denticulate. Length 1/100 in. 
This variety differs from the species described by Dr. Brady * in 
having rounded angles to the shell and slightly inflated sides. One 
specimen only, from zone ii., specimen a. 
Sub-family N0D0SAB1IN2E. 
Nodosaria Lamarck [1816]. 
Sub-genera 
Glandulina; 
Dentalina 1 
d’Orbigny [1826]. 
Nodosaria (Gl.) humilis Boemer, plate VIII. fig. 18. 
Nodosaria humilis Roemer, 1841, Verst, norddeutsch. Kreide, 
p. 95, pi. xv. fig. 6. Glandulina mutabilis, pars, Beuss, 1862, 
Sitzungsb. d. k. Ak. Wiss. Wien, vol. xlvi. pp. 58, 91, pi. v. figs. 
9,11.. 
This is a somewhat uncommon but very distinct form in the 
Gault series. Dr. Reuss has grouped the longer forms with Roemer’s 
species under the name of Gl. mutabilis; but since Gl. humilis 
exhibits very slight variation from the typical peg-top-shaped form, it 
seems justifiable to retain the earlier name for the species possessing 
an ovoid outline. It has been recorded, with the species next to be 
described, from the Upper Hils-clay, the Speeton Clay, and Gault of 
North Germany (Roemer, Beuss) ; from the Gault of Folkestone 
(Reuss, Rupert Jones); from the Gault of France (Berthelin) ; and 
from the Chalk-detritus of Charing (Rupert Jones in Morris’s Cat.). 
It is found in the Folkestone Gault in zone v., very rare ; zone x., 
very rare ; zone xi., 40 ft. from the top, very rare. 
Nodosaria (Gl.) mutabilis Reuss, plate VIII. figs. 19, 20. 
Glandulina mutabilis , pars, Reuss, 1862, vol. xlvi. pp. 58, 91, 
plate v. fig. 7, 8, 10. 
The forms which are here placed under Reuss’s name of Gl. 
mutabilis are the very variable, lengthened, and irregular ones of 
which the two specimens figured are examples. The references to 
previous occurrences given for Gl. humilis apply also to this form. 
It is found in the Gault of Folkestone in zone iii., very rare ; zone vi., 
very rare ; zone xi., 35 feet from the top, very rare ; 20 ft., rare ; 
6 ft., very rare. 
Nodosaria (Gl.) cylindracea Reuss, plate VIII. fig. 21. 
Nodosaria (Gl.) cylindracea Beuss, 1845, Verstein. d. bohm. 
Kreideform., pt. i. p. 25, plate xiii. figs. 1, 2. Glandulina cylin- 
* Lagena quinquelatera Brady, 188], Quart. Journ. Micr. Sci., vol. xxi. N. S. 
p. 60. Id., 1884, Chall. Rep., vol. ix. p. 454, pi. lxi. figs. 15, 16. 
