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the form placed by Terquem * amongst the Testae incertee sedis and 
assigned provisionally to Guttulina. It should be mentioned, how- 
ever, that Jones and Chapman | attribute the latter form to Boly- 
morphina, and name it var. circularis. The specific name given by 
Brady is so appropriate that it is unfortunate that it should have to 
be given up, but priority must be given to Terquem who used the 
same name for a Nubecularia in 1876. J 
Nubecularia dubia sp. n., plate Y. fig. 5 a-c. 
Test free, monothalamous, oviform, concave on two opposite sides 
which are smooth, the remaining sides being convex and wrinkled, 
aperture small, circular, situated in a cup-like depression at the apex 
of the test. 
A doubtful form, which may be claimed by the algologists, and 
have to go the way of Daclylopora. Somewhat analogous forms, 
bearing a superficial resemblence to this, occur in the Eocene of the 
neighbourhood of Paris, and are usually considered to be unicellular 
calcareous algae. In these, however, the cell-walls are thick and porous, 
whilst those of N. dubia are thin and imperforate. The specimens are 
remarkably uniform in size and shape. It is found only at Station 2, 
where it is not uncommon. 
Sub-Family II. Miliolininse. 
Biloculina d’Orbigny. 
Bilocidina ringens Lamarck sp. 
Miliolites ringens Lamarck, 1804, Ann. du Museum, vol. v. p. 351 ; 
vol. ix. pi. xvii. fig. 1 . Biloculina ringens Brady, 1884, Chalk Kept., 
p. 142, pi. ii. figs. 7, 8. 
A few small specimens, normal, and generally distributed. 
Biloculina ringens var. denticulata Brad} 7 . 
Biloculina ringens var. denticulata Brady, 1884, Chalk Bept., 
p. 143, pi. iii. figs. 4, 5. 
Found sparingly in Area 1. 
Bilocidina ringens var. striolata Brady, plate Y. fig. 8. 
Biloculina ringens var. striolata Brady, 1884, Chalk Bept>, 
p. 143, pi. iii. figs. 7, 8. 
Found only at Station 22 in Area 2. The specimens are small, 
and approach B. elongata, whilst those figured by Brady resemble 
B. depressa. Its geographical range is much restricted, as it was 
* Mem. Soc. Geol. France, ser. 3, vol. i. 1878, p. 48, pi. ix. fig. 41. 
t Journal Linnean Society (Zoology), vol. xxv. 1896, p. 505, fig. 24. 
t ‘ Essai sur le Classement des Animaux qui vivent sur la plage et dans les 
environs de Dunkerque,* fasc. 2, 1876, p. 73. 
