FORAMINIFERA FROM DEEP WELLS 45 



to the textularian aperture at the base of the cliamber, the inner 

 portion of the wall has a number of small perforations. This is in 

 some respects like Chrysalidina gradata d'Orbigny, which he de- 

 scribed from the Cretaceous of Europe. 



Genus Trifaxia Reuss, i860. 

 Tritaxia sp. 



A species with concave sides, rather sharp angles, but the 

 edges rounded, and the whole test rather short, with the sutures 

 indistinct, occurs in several wells with the Orbitolina. It was re- 

 corded from the following: Jacksonville, 702-725 feet; Apopka. 

 310 feet: and Tiger Bay, 720 feet. 



Genus Gaudryina d'Orbigny, 1839. 

 Gaudryina flintii Cushman. 



Gaudryina subrotuiidafa Flint (not G. subrotimdata Schwager, 1866). 

 Ann. Rep. U. S. Nat. Mus., 1897 (1899), p. 287, pi. 33, fig. i. 



Gaudryina flintii Cushman, Bull. 71, U. S. Nat. Mus.. pt. 2. 191 1, p. 61. 

 fig. \02a-c (in text) ; Bull. T03, U. S. Nat. Mus., 1918, p. 56, pi. 20, fig. 4. 



There is a single rather small specimen from the Ponce de Leon 

 Well, St. Augustine, Florida, coming from a depth of 200 feet, 

 which seems to represent this species. 



A specimen from the Culebra formation of the Panama Canal 

 Zone was referred to this species, but it has not been previously 

 recorded in the American Miocene. 



Gaudryina sp. ? 

 Plate I, figure 7. 



There is a species with a triangular early portion, and later 

 very rounded biserial chambers which occurred in the well at 

 Marathon, Florida, at a depth of 1,650 feet. 



Genus Clavulina d'Orbigny, 1826. 



Clavtdina communis d'Orbigny. 



Clavulina communis d'Orbigny, Ann. Sci . Nat., vol. 7, 1826. p. 268: Forain. 

 Foss. Bass. Tert. Vienne, 1846, p. 196, pi. 12, figs, i, 2, Cushman, Bull. 103. 

 U. S. Xat. Mus., 1918, p. 57, pi. 20, fig. 6. 



