FREE INSTITUTE OF SCIENCE 



IO17 



TERTIARY FAUNA OF FLORIDA ' 



Tellina csmoglossa n. sp. 

 Plate 46, Figure 27. 



Chickasawan Eocene of Wood's Bluff, Alabama; Choctaw Corners and 

 near Meridian, Mississippi ; Burns and Johnson. 



Shell small, moderately convex, subovate, slightly inequilateral, with a 

 moderate posterior fold ; beaks little elevated ; surface polished, sculptured 

 with numerous even, regular concentric riblets with narrower interspaces, 

 flatfish in the middle of the disk, sharper and more elevated towards the ends 

 of the valve, especially over the fold ; lunule smooth, depressed, long, and 

 narrow ; hinge normal, right laterals distant, strong ; left laterals obscure ; 

 pallial sinus small, oblong, obliquely ascending, confluent for a short distance 

 below with the pallial line ; interior with a few obscure radii. Lon. 16.5, 

 alt. 10.5, diam. 4.8 mm. 



This species is quite abundant at Wood's Bluff and has very much the 

 external characters of T. liiiifera Conrad, which is larger, more elongated, and 

 more pointed behind. 



The species from the Pacific coast described at an early date by Conrad, 

 and referred by him first to the Miocene and later to the Eocene, will be 

 considered under the head of the Oligocene, though it is probable that some 

 of them may be Miocene. Most of the types are in the National Museum. 



Tellina (Moerella?) Aldrlchi n. sp. 

 Plate 46, Figure 9. 



Chickasawan Eocene of Lisbon, Alabama ; Aldrich. Also of Bell's and 

 Gregg's Landings, Alabama. 



Shell large for a Moerella, elongate, with very straight dorsal slopes, 

 rounded in front, arcuate below, and bluntly pointed behind ; beaks incurved, 

 pointed, not prominent, posterior end hardly folded ; surface smooth, with ob- 

 solete concentric undulations and rare radial striulations ; lunular region 

 deeply impressed; hinge normal. Lon. 20, alt. 10, semidiam. 2.5 mm. 



A single left valve, with the interior inaccessible except the hinge, was 

 sent by Aldrich with specimens of T. papyria, from which it differs by its 

 elongated slender form, smaller size, and less convex valves. Better speci- 

 mens from Bell's Landing show a nearly normal hinge with long, low laterals, 

 and an ovate pallial sinus about half confluent below. It is perhaps nearest 

 to T. Greggi Harris, but that species seems to be smaller, more rounded behind, 

 with the pallial sinus free from the pallial line below. 



Comparatively few species have been described from the Oligocene, though 



