32 PROCEEDINGS OF THE NATIONAL MUSEUM vol.80 



Test elongate, composed of a few much inflated, subglobular cham- 

 bers, becoming slightly longer than broad in the later chambers, the 

 base often with a slight spine; sutures strongly depressed; wall 

 smooth ; aperture terminal, radiate, very slightly projecting. Length, 

 1 ; maximum breadth, 0.35 mm. 



This species has been widely recorded from the Cretaceous of 

 Europe, occurs in the Cretaceous of Trinidad, and is probably widely 

 distributed in America. 



NODOSARIA LIMBATA d'Orbigny 



Plate! 10, Figure 5 



Nodosaria Umbata d'Orbigny, M6m. Soc. G6ol. France, ser. 1, vol. 4, p. 12, pi. 

 1, fig. 1, 1840. 



Test composed of a few inflated chambers, slightly separated from 

 one another by distinct but very short connections; chambers some- 

 what pyriform; sutures distinct, somewhat depressed; wall smooth; 

 aperture terminal, radiate, drawn out to a subacute point. 



We have already referred to this form as Nodosaria concinna 

 Reuss.'' A copy of this same specimen is given here, and it seems to 

 fit d'Orbigny's species better than that of Reuss. 



NODOSARIA LIMBATA d'Orbigny var. TUMIDATA new variety 



Plate 10, Figxtbes 6 a, h 



Description. — ^Variety differing from the typical in the shape of 

 the chambers, which are somewhat conical, the greatest breadth being 

 nearly at the base of the basal portion, very strongly truncated as 

 shown in the figure. 



Eolotype of variety.— \J.^.'^M. No. 73819 (Cushman Coll. No. 

 15321), from Upper Cretaceous of pit at Lizard Springs near 

 Guayaguayare, southeastern Trinidad, British West Indies. 



Remarks. — This is evidently closely related to d'Orbigny's species, 

 as there are intermediate forms present. A similar intermediate 

 form between this variety and the typical is figured from the Velasco 

 shale.^ 



NODOSARIA LIMBATA d'Orbigny var. BASIOBNATA new variety 



Plate 10, Figubes 7, 8 



Description. — Variety differing from the typical in the ornamen- 

 tation of the surface, which consists of numerous subnodose projec- 

 tions on the swollen portion of each chamber. 



' Contr. Cushman Lab. Foram. Res., vol. 4, pi. 14, fig. 11, 1928. 



« Cushman, Bull. Amer. Assoc. Petr. Geol., vol. 10, p. 597, pi. 18, fig. 6, 1926. 



