TRANSACTIONS OF WAGNER 

 1182 



TERTIARY FAUNA OF FLORIDA 



Spharella anteproducta Harris, Proc. Acad. Nat. Sci. Phila. for 1895, p. 50, pi. 2, fig. 4. 



Sphcerella sp. Harris, Bull. Pal., ii., p. 257, pi. 13, fig. 6, 1897. 



Not Diplodonta turgida Verrill and Smith, 1881, = D. Verrilli Dall. 



Lower Claibornian of Texas, Harris; Claiborne sands at Claiborne, Ala- 

 bama, Johnson ; Wahtubbee Hills, Clarke County, Mississippi, Burns ; Red 

 Bluff, Wayne County, Mississippi, Burns and Aldrich; Oligocene of Vicks- 

 burg, Mississippi, Conrad. 



This remarkable globular species is not a Sphccrella, but simply a turgid 

 Diplodonta. It ranges from the Chickasawan upward to the Vicksburgian 

 and without any marked change. Specimens labelled by Professor Harris do 

 not seem to me to differ from the ordinary turgida except as individuals differ 

 in any large series. 



Diplodonta inflata Lea. 



Egeria inflata Lea, Contr. to Geol., p. 50, pi. i, fig. 18, 1833. 

 Mysia levis Conr., Am. Journ. Conch., i., p. 147, 1865. 

 Sph&rella levis Conr., Am. Journ. Conch., i., p. 9, 1865. 



Lucina (Sphcerella) inftata var. paruminftata Gregorio, Mon. Claib., p. 207, pi. 29, figs. 

 15-17, 1890. 



Claiborne sands of Claiborne, Alabama ; Johnson. 



This species is not very happily named, as it is never markedly inflated ; it 

 appears to be rather rare in the sands. 



The Sphcerella oregona Conrad of the Smithsonian Eocene Checklist, said 

 to be from the Eocene of Oregon, appears to be undescribed or figured. The 

 Mysia polita Gabb, from the Eocene of Martinez, California (Pal. Cal., i., 

 p. 178, pi. 30, fig. 256, 1864), is probably a Diplodonta. 



Diplodonta? eburnea Conrad (as Loripes, Journ. Acad. Nat. Sci. Phila., 

 ad Ser., i., p. 124, pi. xii., fig. 23, 1848) appears to be of doubtful affinities. 

 It is from the Vicksburgian. There is in the National Museum a pair of 

 valves of Diplodonta from the Jacksonian of Jackson, Mississippi, which are 

 not unlike Conrad's very poor figure, though they do not nearly attain the 

 size he assigns to it. These agree as far as can be determined with the species 

 called parilis by Conrad from the basal Miocene of the New Jersey marls. 



Each fauna seems to have a representative of each of the several types of 

 Diplodonta. Thus in the Oligocene of Bowden we have D. capuloides Gabb 

 (1873), corresponding to the turgida type of the Eocene; D. subquadrata 



