from the Gault at Merstham. 39 
V. arguta, Reuss.—Upper Gault and bottom of cutting. Gault 
and Red Chalk. 
V. truncata, Reuss.—Upper Gault and bottom of cutting. Neo- 
comian, Chalk Marl. 
V. truncata var. robusta, Berthelin and Chapman.—Upper Gault 
and bottom of cutting. Gault. 
Genus CRISTELLARIA. 
Test plano-spiral in part or entirely; complanate, lenticular, crosier- 
shaped, or ensiform. 
Cristellaria gaultina, Berthelin.—Upper Gault and bottom of 
cutting. Gault, Chalk. 
C. rotulata, Lamarck. —Upper Gault. Jurassic, recent. 
C. rotulata var. macrodiscus, Reuss.—Upper Gault and bottom of 
cutting. Neocomian, Gault (and Red Chalk). 
C. Bronmi, Romer.—Upper Gault. Gault. 
C. curcwmcidanea, Berthelin.—Upper Gault. Gault. 
C. complanata, Reuss.—Upper Gault. Lower Greensand, Chalk 
_ (Turonian). 
| C. vestita, Berthelin.—Upper Gault. Lower Greensand, Chalk Marl. 
} C. gibba, d’Orbigny.—Bottom of cutting. Lias, recent. 
: Genus PoLyMORPHINA. 
Segments bi- or tri-serial or irregularly spiral, aperture radiate. 
Polymorphina compressa, d’Orbigny.—Upper Gault. Lias, recent. 
Sub-family RamMvuLininz. 
Test irregular, branching. 
Genus RAMULINA. 
Test branching, composed of pyriform chambers connected by long 
stoloniferous tubes. 
Ramulina aculeata, Wright.—Upper Gault and bottom of cutting. 
Jurassic, Tertiary. 
Genus VITRIWEBBINA, Chapman. 
Test adherent, consisting of a series of hemispherical or elliptical 
chambers, eradually increasing in size and usually arranged in a 
curve. Aperture, a simple crescentic slit at the termination of the 
last chamber. 
Vitriwebbina levis, Sollas.—Bottom of cutting. Gault, Chalk 
_ (Turonian). 
j Family GLOBIGERINID2. 
Test free, calcareous, perforate; chambers few, inflated, arranged 
ppirally ; ; aperture single or multiple, conspicuous. 
Genus GLOBIGERINA. 
Test coarsely perforate; trochoid, rotaliform, or symmetricall 
plano-spiral. 
_____ Globigerina cretacea, d’Orbigny.—Upper Gault. Lower Greensand, 
‘recent. 
D 
