84 PROCEEDINGS OF THE NATIONAL MUSEUM vol.77 



Very distinct characters are lacking to make this a well-defined 

 species. Early stages of other Polymorphinidae are often ver}^ 

 similar to this and may be confused with it. 



Distribution. — Our specimens, some of them referred very question- 

 ably to this species, are from the follow ing localities : 



Recent. — Tripoli. 



Pliocene. — Fiji. 



Miocene. — Hungary, Lapugy. 



Oligocene. — German}^, Diisseldorf; Sollingen; Ceding. 



Eocene. — France, Lutetien, Grignon; Chaussj^. Italy, Bartonian, 

 Val di Lonte. Belgium, Wansin. United States, Jacksonian, east 

 bank of Sepuiga River, 6^ miles north of Brooklyn, Conecuh County, 

 Ala. Trinidad, Cipero section. 



GLOBULINA GRAVIS (Karrer) 



Plate 21, figures 2 a-c 



Pohjmor'phina gravis Karrer, Jahrb. k. k. geol. Reichsaastalt, vol. 20, 1870, 

 p. 181, pi. 2, fig. 12. 



Test ovate, rounded at the base, acute at the apertural end; cham- 

 bers inflated, oval, arranged in a nearly triserial series ; sutures slightly 

 depressed, distinct; wall smooth; aperture radiate. 



Figured specimen length 1.10 mm.; breadth 0.60 mm.; thickness 

 0.50 mm. 



Globulina gravis, in its general features, resembles Globulina rotun- 

 data, but it has more elongated chambers, and the test is very acute 

 toward the apertural end. It is evidently related to Globulina lacrima, 

 while Globulina rotundata is derived from Globulina gibba. 



Distribution. — Globulina gravis is limited to the Cretaceous. We 

 have specimens from Maastricht, Holland, and from the Cambridge 

 greensand, Saxon Cement Works, Cambridge, England. 



GLOBULINA AMPLA (Karrer) 



Plate 21, figure 5 



Polymorphina ampla Karrer, Jahrb. k. k. geol. Reichsanstalt, vol. 20, 1870, 

 p. 181, pi. 2, fig. 13. 



Test oval, somewhat rounded at both ends; chambers few, slightly 

 longer than wide, embracing, arranged in a nearly triserial series, each 

 succeeding chamber more or less removed from the base; sutures not 

 depressed, distinct; wall smooth; aperture radiate. 



Figured specimen, length 0.60 mm.; breadth 0.50 mm.; thickness 

 0.40 mm. 



The present species is described as having a coarse test which would 

 probably be affected by fossilization. Our specimen obtained from 

 the uppermost Cretaceous at Maastricht is very similar to Karrer's 

 species in general features, but the wall is smooth. It may represent 



