Foraminifera of the Gault of Folkestone. By F. Chapman. 755 
zone x., frequent ; zone xi., 55 ft. from the top, very rare ; 45 ft., 
very rare ; 25 ft., frequent ; 20 ft., very common. 
Bulimina Presli Reuss, plate XII. fig. 4. 
Bulimina Presli Reuss, 1845, Yerst. bohm. Kreid., vol. i. p. 38, 
plate xiii. fig. 72. 
A very common form in the Chalk. Also from the Red Chalk 
(Burrows, Sherhorn, and Bailey) ; the Gault of Montcley (Berthelin) ; 
and previously from the Gault of Folkestone (T. R. Jones in Geol. 
Surv. Mem. “ The Weald ”). This species is perhaps the most 
extensively distributed and characteristic form of the Gault Buliminse ; 
occurring in zone vi., rare ; zone vii., very common ; zone viii., 
frequent ; zone ix., common ; zone x., common ; zone xi., 55 ft. from 
the top, very common ; 50 ft., very rare ; 45 ft., frequent ; 40 ft., 
common; 35 ft., rare; 30 ft., frequent; 25 ft., common; 20 ft., 
common; 12 ft., rare ; 6 ft., common. 
Bulimina Presli Reuss, var. sabulosa, plate XII. fig. 5. 
In general form it resembles B. Presli, but since the specimens 
found keep their character of shell-structure distinct they appear to 
merit at least a varietal name. The test is composed of sandy 
particles as in B. Presli, but many of the fragments are much larger 
than are usually seen in the shells of the Buliminse, the surface 
generally being exceedingly rough. Length 1/24-1/40 in. Found 
in zone xi., 20 ft. from the top, very common ; 12 ft., very common ; 
6 ft., very common. 
Bulimina Murchisoniana d’Orbigny, plate XII. fig. 6. 
Bulimina Murchisoniana d’Orhigny, 1840, Mem. Soc. geol. 
France, vol. iv. p. 41, pi. iv. figs. 15, 16. B. Murchisoniana Reuss, 
1845, Verst, bohm. Kreid., vol. i. p. 37, pi. viii. figs. 69, 72 and 
pi. xiii. fig. 70. 
This form has the last three or four chambers very much in- 
flated, the sutural furrows strongly marked, the ahoral end tapering 
suddenly to a sharp point. It is a species well known from the 
Chalk of England, France, Germany, and Bohemia (Rupert Jones, 
d’Orbigny, Reuss) ; and also noted from the Phosphatic beds of 
Cambridge (G. R. Vine), hut apparently unknown from the Gault. 
It occurs in zone xi., 45 ft. from the top, very rare ; 40 ft., 
common ; 35 ft., rare ; 30 ft., very rare ; 20 It., rare ; 12 ft., 
frequent ; 6 ft., rare. 
Bulimina obtusa d’Orbigny, plate XII. fig. 7 a, b. 
Bulimina obtusa d’Orbigny, 1840, Mem. Soc. geol. France, 
vol. iv. p. 39, pi. iv. figs. 5, 6. B. truncata, Reuss, 1845, Yerst. 
bohm. Kreid., vol. i. p. 37, pi. viii. fig. 73. 
