Foraminifera of the Gault of Folkestone. By F. Chapman. 157 
Frondicularia strigillata Keuss (plate III. figs. 13 and 14). 
Frondicularia strigillata Keuss, 1860, Sitzungsb. d. k. Ak. 
Wiss. Wien, vol. xl. p. 195, plate vi. fig. 3. 
This species is an exceedingly variable one in the Folkestone 
series. Few of the specimens exactly resemble Reuss’s figure, but the 
feeble appearance of the nuclear chamber and the interrupted 
strigillate ornamentation tend to clear away any doubt as to their 
identity. In some specimens one side of the shell is developed almost 
wholly at the expense of the other. Reuss’s Cretaceous specimens were 
obtained from detrital sand of Westphalia. In the Gault it is found 
in zone vi., very rare ; zone vii., very rare ; zone x., very rare ; 
zone xi., 55 ft. from the top, frequent ; 45 ft., very rare. 
Frondicularia lanceola Keuss (plate III. fig. 15). 
Frondicularia lanceola Keuss, 1860, tom. cit., p. 198, plate v. 
fig. i. 
The Gault specimen does not exactly agree with Reuss’s figure 
since it has the aboral end of the shell abnormally developed or sub- 
Flabelline ; but there is no doubt of its affinity with this species. 
Reuss’s specimens are recorded from the Lower Senonian marl of 
Westphalia. One specimen only was found in the Gault, in zone xi., 
20 ft. from the top. 
Frondicularia Ungeri Keuss (plate III. fig. 16). 
Frondicularia Ungeri Keuss, 1862, Sitzungsb. d. k. Ak. Wiss. 
Wien, vol. xlvi. p. 54, plate iv. fig. 11 a, h. F. Ungeri Berthelin, 
1880, Mem. Soc. geol. France, ser. 3, vol. i. No. 5, p. 61, plate iv. fig. 4. 
This species has been recorded from the Minimus- clay of North 
Germany (Keuss) and from the French Gault (Berthelin). In the 
Gault of Folkestone it is a well-distributed form ; and though clearly 
the same species as that figured by Keuss, it varies considerably, in a 
long series of specimens, in regard to the number of its chambers. 
At Folkestone it is found in zone v., very rare ; zone vii., very rare ; 
zone ix., common ; zone xi., 55 ft. from the top, rare ; 45 ft., rare ; 
40 ft., frequent ; 35 ft., common ; 30 ft., frequent ; 25 ft., rare ; 
20 ft., rare ; 12 ft., rare ; 6 ft., frequent. 
Frondicularia Parkeri Keuss (plate III. fig. 17). 
Frondicularia Parkeri Keuss, 1862, Sitzungsb. d. k. Ak. Wiss. 
Wien, vol. xlvi. p. 91, plate xii. fig. 7. 
This species was originally described by Keuss from the Folkestone 
Gault, and I have also met with it in the Gault of Godstone, Surrey. 
At Folkestone it occurs in zone v., rare ; zone vi., rare ; zone vii., 
rare ; zone ix., very rare ; zone x., common ; zone xi., 55 ft. from 
the top, rare ; 50 ft., rare ; 45 ft., frequent ; 40 ft., very rare ; 20 ft., 
very rare ; 6 ft., very rare. 
