42 PEOCEEDINGS OF THE NATIONAL MUSEUM vol.67 



The gemmation is triparietal on a basal lamella ( = median). The 

 walls are thick and vesicular. 



In transverse section the tubes are orbicular or elliptical, largest at 

 the periphery, with very thick walls. The median (basal) lamella is 

 almost rectilinear. 



Occurrence. — Lower Cretaceous (Valangian) : Sainte-Croix (Vaud), 

 Switzerland (common). 



Plesioty pes. —C&t. No. 69888, U.S.N.M. 



CARDIOECIA NEOCOMIENSIS PARVULA, new variety 



Plate 2, fig. 8 



The micrometric measurements are somewhat smaller and the ovi- 

 cell less regular than in the typical form. The tubes are visible. 



Measurements. — Diameter of orifice, 0.08 mm.; diameter of peri- 

 stome, 0.14 mm.; distance of peristomes, 0.64 mm.; separation of 

 peristomes, 0.50 mm. 



Occurrence. — Lower Cretaceous (Valangian): Sainte-Croix (Vaud), 

 Switzerland (rare). 



Holotype.— Cat. No. 69890, U.S.N.M. 



CARDIOECIA NEOCOMIENSIS ENTALOPHOROIDES, new variety 



Plate 2, figs. 9, 10 



The zoarium is cylindrical or somewhat compressed. The peri- 

 stomes are arranged in verticells. The ovicell is more globular and 

 less transverse. 



Measurements. — Diameter of aperture, 0.12 mm.; diameter of peri- 

 stome, 0.16 mm.; separation of peristomes, 0.56 mm.; distance of peri- 

 stomes 0.34 mm. 



The separation can be measured only in the portions of the sur- 

 face where the peristomes are arranged in quincunx. The ovicell 

 appears less cordiform and more globular because the zoarium is sub- 

 cylindrical. This is not EntalopJiora neocomiensis D'Orbigny, 1853 

 in which the tubes are visable and more distant. 



Occurrence. — Lower Cretaceous (Valangian): Sainte-Croix (Vaud), 

 Switzerland. 



Cotype.—Cfii. No. 69889, U.S.N.M. 



CARDIOECIA VERTICELLATA, new species 



Plate 3, figs. 1-4 



Description. — The zoarium is cylindrical, arborescent. The tubes 

 are very short, flat, indistinct or separated by a salient thread; the 

 peristomes are thick, salient, orbicular, generally arranged in close 

 verticells. The zone of growth is a broad cone. The ovicell is tri- 

 angular, elongated, very convex, smooth; the oeciostome is small 

 salient, orbicular. 



