TRANSACTIONS OF WAGNER 

 1O22 



TERTIARY FAUNA OF FLORIDA 



Tellina (Merisca) hypolispa n. sp. 

 PLATE 46, FIGURE 23. 



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

 Calhoun County, Florida, and of the Oak Grove sands at Oak Grove, Santa 

 Rosa County, Florida. 



Shell small, inequivalve, inequilateral, plump, polished, the right valve 

 flatter ; anterior end longer, rounded, the posterior rather roundly pointed ; 

 base arcuate, near the posterior end a little concave ; beaks small, pointed ; 

 posterior end obscurely rayed, slightly flexed ; svirface smooth or with incre- 

 mental lines but no radial sculpture ; anteriorly near the base are usually a 

 few sparse, concentric, elevated threads with irregular but wider interspaces ; 

 the posterior dorsal area, contrary to the usual rule, is smooth and shows no 

 traces of lamellation ; hinge normal, rather feeble ; a narrow impressed lunule ; 

 interior with some obscure radii; pallial sinus as in Anguhis. Lon. 13.5, alt. 

 8.5, diam. 5 mm. 



This species is on the border line between Anguhis, Moerella, and Merisca. 

 The right valve seems flatter, less arcuate below, and higher than the'left when 

 considered separately. 



Tellina (Phyllodina) lepidota n. sp. 



PLATE 46, FIGURE 18. 



Shell nearly flat, elongated, subequilateral ; beak small, low, pustular ; ne- 

 pionic shell distinct, smooth, polished ; profile of the dorsal slopes near the 

 beaks rectilinear ; anterior end rounded, posterior subrostrate, with, in the right 

 valve, a single elevated ray extending to the posterior basal angle from the 

 umbo ; an extremely narrow lunule deeply impressed ; margin of dorsal slopes 

 close-set with oblique scales ; surface of the disk with low, distant, concentric 

 lamellae with much wider, slightly excavated interspaces showing microscopic 

 concentric striae; interior showing the reflection of the surface undulations, 

 polished ; laterals long and slender, cardinals very small ; pallial sinus ob- 

 liquely ascending, narrow, free. Lon. 7.5, alt. 4 mm., taken from lines of 

 growth on fragment 8.5 mm. long. 



This fragment is from the Oligocene sandstones above the Eocene shales 

 of Gatun on the line of the Panama Canal, and is so remarkable that I have 

 thought it best to include it, since the species may turn up at any time in the 

 equivalent beds of the Antilles or the Gulf States. The figure does not show 

 the scales with sufficient distinctness, v 



