JOURNAL 
OF THE 
ROYAL MICROSCOPICAL SOCIETY. 
FEBRUARY 1896. 
TRANSACTIONS OF THE SOCIETY, 
I. — The Foraminifera of the Gault of Folkestone. — YII1. 
By Frederick Chapman, F.R.M.S. 
{Read 20 th November , 1895.) 
Plates I. and II. 
Cristellaria — continued. 
Cristellaria turgidula Reuss, plate I. fig. 1 a, b. 
C. turgidula Reuss, 1862, Sitzungsb. d. k. Ak. Wiss. Wien, 
vol. xlvi. p. 73, plate viii. fig. 4 a, b. C. ingenua Berthelin, 1880, 
Mem. Soc. geol. France, ser. 3, vol. i. No. 5, p. 54, plate iii. figs. 20, 21. 
The above species may be regarded as one of the modifications 
of the type C. cultrata, so numerously represented in the Cretaceous 
deposits of this and other countries. It shows fairly constant characters 
by which it can be distinguished from the other feebly developed 
examples of a similar type occurring in the younger fossiliferous 
EXPLANATION OF PLATES. 
Plate I. 
Fig. 1. — Cristellaria turgidula Reuss: a, lateral aspect; b, front peripheral aspect. 
X 60. 
„ 2. — C. circumcidanea Berthelin: a, lateral aspect; b, front peripheral aspect. 
X 60. 
„ 3. — C. subalata Reuss : a, lateral aspect ; b, front peripheral aspect, x 45. 
„ 4. — C. secans Reuss var. angulosa nov. : a , lateral aspect ; b, front peripheral 
aspect, x 45. 
„ 5. — C. nodosa Reuss sp. : a, lateral aspect ; b, front peripheral aspect, x 45. 
„ 6. — C . convergens Bornemann : a , lateral aspect ; 6, front peripheral aspect, 
X 60. 
„ 7. — C. gibba d’Orbigny : a, lateral aspect ; b, front peripheral aspect. X 60. 
„ 8. — C. rotulata Lamarck sp. : a, lateral aspect; b, front peripheral aspect. 
X 30. 
„ 9. — C. rotulata var. macrodiscus Reuss : a, lateral aspect ; b, front peripheral 
aspect, x 30. 
„ 10. — C. gaultina Berthelin : a, lateral aspect ; 5, front peripheral aspect, x 30. 
„ 11. — C. gaultina T erthelin : specimen of redundant growth, x 16. 
1896 D 
