228 
Tellina mera. — Specific character. Ovate-orbicular, trans- 
versely striated, binge anterior to tbe middle, bidentate, witb a 
lateral tooth in one valve. 
Desc. Shell small, thin, white, not very convex, somewhat 
regularly striated transversely ) beaks forming a rather prominent 
angle ; anterior side with an obvious undulation, and rectilinear as 
far as double the length of the ligament ; at tip rounded ; ligament 
rufous ; posterior side nearly rectilinear half the distance from the 
beaks to the middle of the tip, which is regularly and obtusely 
rounded ; basal margin obtusely and regularly arquated ; hinge 
with two primary teeth in each valve ; posterior tooth small and 
triangular ] anterior teeth thicker, obtuse and with an impressed 
line on its summit ; a single prominent lateral triangular tooth in 
the left valve ; sinus of the palleal impression remarkably large, in 
its posterior curvature almost confluent with the tip of the muscu- 
lar impression. 
Ohs. Inhabits the coast of South Carolina. — ^Dr. Eavenel. 
In a particular light it has a slight appearance of longitudinal 
lines. PI. 64, fig. 2. 
Tellina alternata. — Jour. Acad. JSFat. Sc., vol. 2, p. 276. 
Ohs. It is abundant in the Upper Tertiary or Newer Pliocene 
beds near Newbern, North Carolina. — Ed.* PI. 65. fig. 1. 
Tellina polita, noh. — Jour. Acad. Nat. Sc. vol. 2, p. 276. 
PI. ^^,fig. 2. 
■ Tellina TENTA. — Specific character. Rostrum curved to the 
left ; no lateral teeth. 
Desc. Shell transversely oblong-ovate, fragile, a little com- 
pressed, white, with a tinge of dull yellowish towards the um- 
bones wrinkles of growth not very prominent, but more obvious on 
the anterior side ; beaks a little before the middle, not much ele- 
vated ; anterior side narrowed, curved to the left, at tip truncated 
or obviously emarginate umbonial slope hardly elevated ; within 
with an obsolete appearance of radiating lines ; lateral teeth none ; 
cardinal teeth in the left valve prominent ; a tinge of dull yellow- 
ish on the disk as on the exterior. 
Ohs. Inhabits the coast of South Carolina. — Dr. Ravenel. 
The proportions of length and breadth is nearly that of TeUina 
*[T. A. Conrad.] 
