NO. 2162. FLINT RIVER OLIGOCENE FOSSILS—DALL. 493 



SPONDYLUS FILIARIS. new species. ' 



Plate 83, figs. 5, 6. 



Shell large, thin, more or less iiTegular from its attachment to 

 irregular surfaces which its growth follows, sculptured with small low 

 radiating rounded threads without spiny processes, arranged m groups 

 of five to eight, with the interspaces averaging subequal; these groups 

 separated by larger but similar smgle tlireads; the inner margm of 

 the valves shghtly crenulated ; concentric sculpture of inconspicuous 

 incremental lines; beak of upper valve rather pointed, with a small 

 and narrow inconspicuous auricle on each side, the lower valve not 

 obtained; the hinge as usual m the genus, but narrow with a small 

 resilifer. Height of large upper valve, approximately, 65; breadth, 

 57 ; depth, 18 mm. The small valve figured is about 20 mm. in height. 



Locality.— Station 7078, on the east bank of Fluit River, near the 

 lower end of Smith's Reach, about one-quarter of a mile below Hale 

 Landing, Decatur County, Georgia; collected by Dr. C. Wythe Cooke 

 and W. C. Mansfield, 1914. Also with Spondylus hostrycUtes Guppy, 

 in the Tampa silex beds at Ballast Pomt, Tampa Bay, Florida, by 

 W. H. DaU in 1886. U. S. Nat. Mus. Cat. No. 166712. 



This species is represented by a defective specimen in the Tampa 

 collection wliich was supposed, when studied, to be a worn variant of 

 S. hostrycliites. But the more complete material obtained on the 

 Flint River shows that its sculpture does not take on the spinose 

 character of the latter species and the sculpture is finer and more 

 regular. Between perfect shells the distmctiveness should be com- 

 plete. 



LIMA HALENSIS, new species. 



Plate 83, figs. 1, 7, 8. 



Shell ovate, moderately thin, with a short hingoline and incon- 

 spicuous auricles; sculpture of about 16 strong nearly smooth radial 

 ribs with subequal channeled interspaces, the ribs near the submar- 

 gms obsolescent and the submargins and auricles sculptured only 

 with rather conspicuous incremental lines. The ribs are themselves 

 sculptured with more or less obsolete minute radial striations most 

 distinct toward the middle of the disk; concentric sculpture confined 

 to more or loss prominent incremental fines not rismg into scales or 

 imbrications; beaks narrow; anterior gape small with its bounding 

 valve-margins thickened and shghtly reflected; Innge area small, 

 flat, with no crural callosities, the figamentary pit large, equilaterally 

 triangular, shallow; valves subequal, and moderately convex. Height, 

 52; breadth of shell, 37; of hingefine, 16; diameter, 14 mm. 



Locality.— Sta.tioii 7074, at Hale landing, on the west bank of 

 Flint River, 7 miles southeast of Bainbridge, Decatur County, 



