FREE INSTITUTE OF SCIENCE 



I03S 



TERTIARY FAUNA OF FLORIDA 



for a Tellina three or four times before Say so applied it, and one of the prior 

 attempts, at least, was made on a species of Angulus. The name of Deshayes 

 is suggested in one of his manuscripts in my possession. 



Tellina (Angulus) propetenera n. sp. 

 PLATE 47, FIGURE 7. 



Pliocene of the Caloosahatchie River, Florida ; Ball. 



Shell moderately convex, equivalve, subequilateral ; beaks rather promi- 

 nent, anterior end rounded, posterior dorsal slope convex, the end slightly 

 decumbent, the basal margin in front of it slightly incurved ; surface polished, 

 with concentric striae and somewhat irregular, sharp, elevated lines, not 

 always in harmony with the lines of growth, and which become more nu- 

 merous and crowded near the basal margin ; pallial sinus high, rising to an 

 angle above the level of the posterior adductor scar in the left valve, and then 

 descending to the pallial line at the distal end of the anterior thickened ray, 

 and wholly confluent with the pallial line below ; hinge normal, shell moder- 

 ately thick, with some internal radial lines. Lon. 16, alt. 10, diam. 4.5 mm. 



This shell is nearest T. tenera Say, but larger and more solid, with a strong 

 thickened internal ray, its posterior dorsal margin more arched, and the valves 

 more nearly equilateral. 



T. (Angulus) mera Say and T. (Angulus) tampaensis Conrad are also 

 found in the Pliocene marls of the Caloosahatchie River. 



Tellina (Scissula) similis Sowerby. 



Tellina similis Sby., British Misc., pi. 75, 1806; Turton, Conch. Diet, p. 170, 1819; Han- 

 ley, Thes. Conch., p. 285, pi. 57, fig. 65, 1846; D'Orbigny, Moll. Cubana, ii., p. 249, 



1853. 

 Tellina decora Say, Journ. Acad. Nat. Sci. Phila., v., p. 219, 1827; De Kay, Zool. N. Y., 



v., p. 211, 1843; Hanley, Thes. Conch., i., p. 285, pi. 56, fig. 27, 1846 (not pi. 59, fig. 



127, nor pi. 66, fig. 260) ; Binney's Say, p. 126, 1858. 



Tellina iris Philippi (non Say), Abb. und Beschr.. ii., p. 25, pi. iii., fig. 5, 1845. 

 Tellina (Angulus) decora H. and A. Adams, Gen. Rec. Moll., ii., p. 397, 1856. 



Pliocene of the Caloosahatchie River, Florida, Ball ; recent from Florida 

 and Bermuda, south to Venezuela. 



There can be no reasonable doubt that Sowerby's Tellina similis was 

 founded upon a large white specimen of Say's Tellina decora, and the latter 

 name, familiar and appropriate as it is, will have to be dropped. 



