FREE INSTITUTE OF SCIENCE 



I02S 



TERTIARY FAUNA OF FLORIDA '^ 



constricted or markedly flexed ; surface polished, with, except near the beaks, 

 fine, rather distant, concentric threads, which on the basal half of the posterior 

 end rise into extremely delicate low lamellae ; hinge normal, strong ; pallial 

 sinus connecting the adductor scars and confluent below ; there is a slightly 

 impressed narrow lunule. Lon. 7.5, alt. 5, diam. 3 mm. 



This species diiifers in sculpture, form of the pallial sinus, and other details 

 from the other allied forms. 



Tellina (Moerella) acloneta n. sp. 

 Plate 46, Figure 16. 



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



Shell minute, elongate, very inequilateral, moderately inflated ; anterior 

 end roimded, posterior end somewhat produced, flexed, the right valve showing 

 a shallow sulcus extending from the umbo to the base behind the posterior 

 basal angle ; surface polished, smooth except for incremental lines ; hinge 

 normal, beaks low, almost pustular ; lunule present, slightly impressed ; pallial 

 sinus rounded, short, reaching two-thirds of the way from the posterior to the 

 anterior adductor scar; below mostly confluent. Lon. 4.7, alt. 3.0, diam. 

 1.5 mm. 



This form is near T. Siinpsoni, but is smaller, and when compared with 

 specimens of that species of the same size appears more compressed and more 

 elongated. 



Tellina (Angulus) pharcida n. sp. 

 Plate 46, Figure 7. 



Oligocene of Bowden, Jamaica; Henderson and Simpson. 



Shell small, elongate, very inequilateral, moderately convex ; anterior end 

 produced, rounded ; posterior end short, roundly pointed, with a slight flexure ; 

 beaks in the posterior third; surface covered with extremely fine close-set 

 grooves; sculpture as usual a little stronger near the posterior end; beaks 

 low, pointed; lunule obsolete; hinge normal, pallial sinus obscure in the 

 polish of the interior but probably normal ; no thickened rays. Lon. 5.5, alt. 3, 

 diam. 1.5 mm. 



This small form recalls T. sybaritica Dall, which is a larger, more solid, 

 and more flexuous shell. It may not be fully adult, but is not the young of 

 any of the other species which were obtained from the Bowden marl at the 

 same time. 



