58 8 
Transactions of the Society. 
45 ft., rare ; 40 ft., rare ; 30 ft., very rare ; 25 ft., common ; 12 ft., fre- 
quent ; 6 ft., common. 
Gloligerina cretacea d’Orbigny, plate XIII. figs. 5, 6. 
' Gloligerina cretacea d’Orbigny, 1840, Mem. Soc. geol. France, 
vol. iv. p. 34, plate iii. figs. 12-14. Eeuss, 1845-6, Verst, bohm. 
Kreidef., pt. i. p. 36, pi. viii. figs. 55 a, l. Id., 1860, Sitzungsb. d. 
k. Ak. Wiss. Wien, vol. xl. p. 225. Id., 1862 ; ibid., vol. xlvi. p. 88. 
Berthelin, 1880, Mem. Soc. geol. France, ser. 3, yol. i. No. 5, p. 65. 
Brady, 1884, Chall. Rep., vol. ix. p. 596, plate lxxxii. figs. 10 a-c [?] ; 
fossil specimen, figs. 11 a-c. Burrows, Sherborn, and Bailey, 1890, 
Journ. Boy. Micr. Soc., p. 561, plate xi. figs. 18 a, b f c. Perner, 1892, 
Ceska Ak. Cisare Frantiska Josefa, Prague (Palseontographica Bo- 
hemiae, No. 1), p. 64, plate ix. figs. 7-10. Chapman, 1892, Quart. 
Journ. Geol. Soc., yol. xlviii. p. 517, plate xv. figs. 13 a-c. Wood- 
ward and Thomas, 1893, Final Keport Geol. and Nat. Hist. Survey 
Minnesota, p. 41, plate D, figs. 18, 19. 
The above species is almost entirely confined to Cretaceous strata, 
where it is usually very abundant. Associated with Anomalina 
ammonoides, it constitutes by far the greater . bulk of the washings 
from the Gault clays, especially those of zone xi. Berthelin also 
remarks on the fact of their extreme abundance in the Gault of 
France. 
The test of this species is often infilled with pyrites, in common 
with many other species from the Gault ; and frequently the casts alone 
remain, as is the case with many of the larger fossils from the Gault, 
such as Ammonites, Nucula , &c. In those zones where glauconite 
abounds, the granules found in the washings are often easily recog- 
nisable as casts of Gloligerina cretacea or of Anomalina ammonoides . 
In the Upper Chalk I have sometimes found G. cretacea infilled with 
crystalline calcite, which is revealed on dissolving away the thin test 
with dilute acetic acid, and then quickly arresting the process. 
This species has been recorded from the Neocomian of Surrey 
(Chapman); the Gault of Folkestone, &c. (Jones); the Red Chalk 
of Yorkshire (Burrows, Sherborn, and Bailey); the various Cre- 
taceous strata of England and Ireland (d’Orbigny, Jones, Wright, 
Chapman, and others) ; from the Gault and Chalk of Germany and 
Bohemia (Reuss, &c.); and the Cenomanian of Bohemia (Perner). 
It also occurs in the Cretaceous marls of New Jersey (Woodward and 
Bagg), and abundantly in the Chalk strata of Iowa, Minnesota, &c. 
(Calvin, Woodward, and Thomas). 
G. cretacea was found at Folkestone in zone i., spec. I , frequent ; 
zone ii., spec, a, frequent ; zone ii., spec, c, frequent; zone iii., common ; 
zone iv., frequent ; zone v., common ; zone vi., common ; zone vii., 
common ; zone viii., common ; zone ix., common ; zone x., common ; 
zone xi., 55 ft. from the top, very common ; 50 ft., very common ; 
