38 Mr. W. Murton Holmes on Foraminifera 
Family LaGENIDz. 
Test calcareous, very finely perforated; either monothalamous, or 
consisting of a number of chambers joined in a straight, curved, spiral, 
alternating, or (rarely) branching series. Aperture simple or radiate, 
terminal. No interseptal skeleton nor canal system. 
Genus NopDosaRIA. 
Test straight or curved, circular in transverse section; aperture 
typically central. 
Nodosaria cylindracea, Reuss.—Upper Gault. Gault, Chalk. 
N. consobrina, dOrbigny.—Upper Gault. Gault, recent. 
N. communis, d’Orbigny.—Upper Gault. Permian, recent. 
N. farcimen, Reuss.—Upper Gault and bottom of cutting. Lias, 
recent. 
N. pawpercula, Reuss.—Upper Gault. Gault, Chalk. 
N. obscura, Reuss.—Upper Gault. Lower Greensand, Chalk. 
N. bambusa, Chapman.—Upper Gault. Gault. 
N. raristriata, Chapman.—Upper Gault. Gault, Chalk. 
N. hispida, V@Orbigny.—Upper Gault. Lias, recent. 
N. tenwicosta, Reuss.—Bottom of cutting. Neocomian, Chalk. 
N. prismatica, Reuss. —Upper Gault and bottom of cutting. Neo- 
comian, Gault. 
N. tetragona, Reuss.—Upper Gault and bottom of cutting. Aptian, 
Gault. 
N. orthopleura, Reuss.—Upper Gault. Gault. 
Genus FRONDICULARIA. 
Test compressed or complanate, segments V-shaped, equitant; 
primordial chamber distinct. 
Frondicularia Parkeri, Reuss.—Bottom of cutting. Gault. 
F. Guestphalica, Reuss.—Bottom of cutting. Gault. 
F. planifolium, Chapman.—Bottom of cutting. Gault. 
Genus RHABDOGONIUM. 
Test straight or slightly curved, triangular or quadrangular in section. 
Rhabdogonium tricarinatum var. acutangulwm, Reuss.— Upper 
Gault. Neocomian, Gault (and Red Chalk), 
Genus MARGINULINA. 
Test elongate, curved; segments nearly circular in section; aperture 
marginal. 
Marginulina soluta, Reuss.—Upper Gault. 
M. striato-costata, Reuss.—Upper Gault. Neocomian, recent. 
Genus VAGINULINA. 
Test elongate, compressed or complanate, septation oblique, aper- 
ture marginal. 
Vaginulina recta, Reuss.—Upper Gault and bottom of cutting. 
Gault, Chalk Marl. 
