590 
Transactions of the Society. 
Sitzungsb. d. k. Ak. Wiss. Wien, vol. xlvi. p. 39, plate ii. figs. 10, 18. 
B. nana Bertbelin, 1880, Mem. Soc. geol. France, ser. 3, vol. i. 
mem. 5, p. 43. 
This species has been found in the North-German Gault (Reuss) ; 
the Gault of Montcley, France (Berthelin) ; the Septaria-clay of 
Germany (Keuss, Schlicht) ; and the Miocene of Transylvania (Neuge- 
boren). As a recent form it affects depths down to 400 fathoms 
(Brady). It is found in the Gault of Folkestone in zone i., specimen h, 
very rare ; zone iv., very rare ; zone vii., very rare ; zone x., frequent ; 
zone xi., 55 ft. from the top, frequent ; 45 ft., very rare ; 35 ft., 
frequent ; 30 ft., frequent ; 25 ft., frequent ; 20 ft., very rare ; 12 ft., 
frequent ; 6 ft., very rare. 
Nodosaria (B.) communis d’Orbigny, plate IX. fig. 1. 
Nodosaria (B.) communis d’Orbigny, 1826, Ann. Sci. Nat., 
vol. vii. p. 254, No. 35. B. communis d’Orbigny, 1840, Mem. Soc. 
geol. France, vol. iv. p. 13, plate i. fig. 4. N. ( B .) communis Reuss, 
1845, Yerstein. bohm. Kreideform., pt. 1, p. 28, plate xii. fig. 21. 
The typical B. communis is found in various Cretaceous deposits 
newer than the Gault, such as the Planermergel of Bohemia (Reuss) ; 
besides all important deposits above and below the Cretaceous series. 
In the Folkestone Gault it occurs in zone iii., very rare ; zone v., 
rare ; zone vii. frequent ; zone ix., frequent ; zone xi., 55 feet from 
the top, common; 50 ft. common; 45 ft., rare; 40 ft., frequent; 
35 ft., common; 30 ft., frequent; 25 ft., very common; 12 ft., 
frequent. 
Nodosaria (D.) mucronata Neugeboren, plate IX. fig. 2. 
Bentalina mucronata Neugeboren, 1856, Denkschr. d. k. Ak. 
Wiss. Wien, vol. xii. p. 83, plate iii. figs. 8-11. N. ( B .) mucronata 
Brady, 1884, Chall. Rep., vol. ix. p. 506, plate Ixii. figs. 27-29. 
N. (B.) mucronata Burrows, Sherborn and Bailey, 1890, Journ. R. 
Micr. Soc., p. 557, plate ix. fig. 31. 
This species has been found in the Speeton Chalk (Burrows, 
Sherborn and Bailey) ; and in various beds of Tertiary age. As a 
recent form it is unrestricted as to depth. In the Gault it is found 
in zone v., very rare ; zone x., very rare ; zone xi., 30 ft. from the 
top, very rare ; 25 ft., very rare ; 12 ft., very rare. 
Nodosaria (D.) costellata Reuss, plate IX. fig. 3. 
Nodosaria costellata Reuss, 1845, Yerstein. bohm. Kreideform., 
pt. 1, p. 27, plate xiii. fig. 18. 
This form was found by Reuss in the Planermergel of Bohemia. 
The lower part of Reuss’ shell was ornamented with striae extending 
half-way across the chambers, whilst the upper part was wholly striate. 
A fragment only was found in zone xi., 45 ft. from the top. 
