TRANSACTIONS OF WAGNER 

 1026 



TERTIARY FAUNA OF FLORIDA 



Tellina (Moerella) nucinella n. sp. 



Plate 46, Figure 19. 



Oligocene sands of Oak Grove, Santa Rosa County, Florida. 



Shell minute, ovate, equivalve, very inequilateral; beaks pointed, low; an- 

 terior end produced, rounded ; posterior end much shorter, wider, and bluntly 

 rounded ; sculpture of uniform, close-set, rounded threads which in the pos- 

 terior third become alternately higher and here cross minute close radial striae ; 

 lunule and escutcheon absent; hinge normal, strong, ligament very short; 

 pallial sinus obliquely ascending, rounded, short, free from the pallial line 

 below. Lon. 3.5, alt. 2.3, diam. i.o mm. 



A single right valve of this little species was obtained from the marl. It 

 recalls T. ovalis Lea from the Claibornian, but is proportionately shorter. 



Tellina (Angulus) pressa n. sp. 

 Plate 47, Figure 5. 



Oligocene marl of Bowden, Jamaica, and of the Chipola River, Calhoun 

 County, Florida. 



Shell thin, compressed, inequilateral ; beaks low, hardly interrupting the 

 dorsal profile, but sharp and almost pustular; ligament rather long, hinge 

 delicate but normal ; surface polished, with rather distant, fine, concentric 

 impressed lines ; the posterior dorsal slope with sparse, sharp, little elevated 

 concentric lamellae ; near the beaks the shell is smooth ; interior with a faint 

 anterior elevated ray which separates the adductor scar from the anterior part 

 of the long, high pallial sinus, which is wholly confluent below ; the interior 

 more or less obscurely radially striate. Lon. 12.5, alt. 7.5, diam. 2 mm. 



A thin and delicate species with no observable flexure or ridge on the 

 posterior end, and whose especial characteristic is the high dorsal profile behind 

 the beaks. 



Tellina (Angulus) acosmita n. sp. 

 Plate 46, Figure i. 

 Oligocene of the Chipola beds, Chipola River, Calhoun County, Florida; 

 Dall and Burns. 



Shell small, thin, elongate, inequilateral, rounded in front, produced and 

 pointed behind ; beaks small, pointed, low ; disk with usually an obscure con- 

 striction mesially; surface polished, concentrically feebly striated, near the 

 margins with regularly spaced concentric grooving; on the posterior dorsal 



