TRANSACTIONS OF WAGNER 



TERTIARY FAUNA OF FLORIDA 



it is well supplied with Tcllinidar. Gabb cites T. cnneata Orbign_v, 1853 (= Moe- 

 rella Gouldii Hanley, 1847, not Tellina cnneata Chemnitz or T. {Macoma) 

 cuneata Sowerby, 1867), from Santo Domingo, an identification which needs 

 to be confirmed; T. {Peronidia?) dariena Conrad {-\-T. semilcBvis Gabb, 

 1861) is from the Oligocene sandstones of the Isthmus of Darien above the 

 Eocene shales; T. (Eurytellinaf) serica Conrad (+7. euryterma Gabb), 

 Vicksburgian ; T. {Moerella) minuta Gabb, 1873, Santo Domingo; T. {Ellipto- 

 tellina?) perovata Conrad, 1848, Vicksburgian; T. (Moerella) pectorosa Con- 

 rad, 1848, Vicksburgian; Macoma sublintea Conrad, 1871, a doubtful species 

 from the Vicksburgian, and T. {Moerella) vicksbnrgensis Conrad, 1848, 

 Vicksburgian, are all the east American species I have found recorded. From 

 the Pacific coast there are a few species, poorly described and figured, but of 

 which the types in some cases exist, from the Astoria region in Oregon, but it 

 is uncertain whether the horizon be Oligocene or Miocene, the fauna of these 

 shales having been but Httle investigated with reference to their stratigraphy. 

 The species are T. {Peronidia?) emacerata Conrad; T. {Moerella?) obruta 

 Conrad ; T. {Peronidia?) oregonensis Conrad, and two indeterminate forms, 

 T. bitnincata and subnasuta Conrad, described in the geological report of the 

 Wilkes Exploring Expedition in 1849. None of them appears to be definitely 

 identifiable with any recent species. 



Tellina chipolana n. sp. 



Plate 47, Figure 6. 



Oligocene of the Chipola beds at Alum Bluff and on the Chipola River, 

 Florida ; Burns. 



Shell solid, ovate, inequilateral, the anterior side longer, beaks low, pointed ; 

 anterior end rounded, rather pkimp, posterior end more compressed, rostrate, 

 strongly folded, dorsal area with two radial ridges, each with a shallow sulcus 

 above it, posterior angle obliquely truncate; surface with obscure, fine radial 

 striation, sculptured with strong, low, sharp, regular, elevated, concentric 

 lamellae ; hinge normal, left laterals obscure, lunule impressed, narrow, smooth ; 

 interior with an obscure thickened ray behind the anterior adductor scar; 

 pallial sinus low, ovate, about half confluent below. Lon. 38, alt. 23, diam. 

 II mm. 



The left valve is very sharply pointed and flexed behind. This form may 

 be regarded as a precursor of such types as T. internipta Wood, of the recent 

 fauna. 



