NO. 2162. FLINT RIVER OLIGOCENE FOSSILS— DALL. 497 



Flint River, below the mouth of Blue Spring branch; Vaughan. 

 Cooke, and Mansfield, October, 1914. U. S. Nat. Mus. Cat. No. 

 166716. Also on the left bank of Fhnt River at Bainbridge; A. H. 

 Brooks, 1900. 



Unfortunately no part of the exterior is represented by the. speci- 

 mens received. It is probable, however, that it was sculptured only 

 by more or less conspicuous incremental lines, without radial sculp- 

 ture. 



From any other species of the group in the southern Tertiary this 

 is readily distinguished by its markedly oval form. 



The validity of the name Phacoides as a generic appellation has 

 been called in question from the fact that it is doubtful whether 

 BlainvOle used it in that sense or merely as a group name. However, 

 as it was subsequently used by J. E. Gray in 1847 as a generic name, 

 it seems that, failing any prior designation for the group in question, 

 the question is hardly worth raising. 



PHACOIDES (HERE) cf. WACISSANUS Dall. 



IPhacoMes {Here) wacissanus Dall, Bull. U. S. Nat. Mus. No. 90, 1915, p. 137, 

 pi. 23, fig. 12. 



Localities. — Station 7075, on the east bank of Flint River, about lOJ 

 miles below Bainbridge, Decatur County, Georgia, and just above 

 Lambert island; Cooke and Mansfield, 1914; station 7131, 2f miles 

 below Bainbridge, at Cherry Chute on the Flint River, from hard 

 residual blocks on a small island; and at station 7150a on the east 

 bank of Fhnt River from loose blocks of chert just below the wagon 

 bridge at Bainbridge; Vaughan, Cooke, and Mansfield, 1914. U. S. 

 Nat. Mus. Cat. No. 166758. 



P. wacissanus was collected from the limestone of Wacissa, Jeffer- 

 son County, Florida (U. S. Nat. Mus. Cat. No. 165200) and is rather 

 common in the Orthaulax pugnax zone at Ballast Point, Tampa Bay, 

 Florida. 



PHACOmES, species indeterminate. 



Locality. — Station 7096, at Red Bluff on the west bank of Flint 

 River, 7 miles above Bainbridge, Decatur County, Georgia; Vaughan, 

 Cooke, and Mansfield, 1914. U. S. Nat. Mus. Cat. No. 166759. 



A species represented by unidentifiable casts, but apparently dif- 

 ferent from the others here mentioned, was obtained at the above 

 locality. 



PHACOroES (MILTHA) OCALANUS DaU. 



Phacoides (Miltha) ocalanus Dall, Trans. Wagner Inst. Scl. Phila., vol. 3, 1903, 

 pt. 6, p. 1375, pi. 50, fig. 14. 



Localities. — Station 7079, at Mascot Point, on the east bank of 

 Flint River, below the mouth of Blue (or Russell) Spring branch, m 

 chert blocks; and at station 7096, on the west bank of Flint River at 

 -Proc.N.M. vol.51— 16 32 



