TRANSACTIONS OF WAGNER 

 IO2O 



TERTIARY FAUNA OF FLORIDA 



bluntly pointed; beaks inconspicuous, lunule obscure; surface nearly smooth, 

 with irregular concentric striation at intervals and sparse elevated concentric 

 threads or lamellae, usually worn off, and when present low and delicate ; fringe 

 normal, in the left valve feeble ; pallial sinus large, subovate, largely confluent 

 below. Lon. 16, alt. 12.2, diam. 8 mm. 



Shell recalling T. mera Say but of different form. 



Tellina (Macaliopsis) cloneta n. sp. 

 PLATE 46, FIGURE 8. 



Oligocene of the Chipola River, Calhoun County, Florida. 



Shell small, thin, inequilateral, anterior end longer, more convex, and 

 evenly rounded ; posterior end shorter, rather suddenly pointed, and slightly 

 flexed ; beaks pointed, smooth, prominent ; lunule and escutcheon obsolete ; 

 disk without radial striae, but with very thin, regular, rather distant concentric, 

 elevated lamellae, easily worn off, the posterior end with an obsolete radial 

 fold ; hinge normal, pallial sinus large, gibbous, nearly reaching the anterior 

 adductor scar, more than half confluent below. Lon. 13.5, alt. 8.5, diam. 4 mm. 



Much more delicate and of a different form from the preceding species. 



Tellina (Merisca) aequistriata Say. 

 Tellina aquistriata Say, Journ. Acad. Nat. Sci. Phila., iv., p. 145, pi. x., fig. 7, 1824; 



Harris, Bull. Am. Pal., i., p. 321, pi. 29, fig. 7, 1896. 



Oligocene of Alum Bluff, Calhoun County, Florida ; of the Bowden marl, 

 Jamaica ; Miocene of Maryland and the York River, Virginia ; Pliocene of the 

 Croatan and Waccamaw beds, North and South Carolina ; recent, from North 

 Carolina to Brazil, in moderate depths of water. 



This species is closely related to the recent T. lint e a Conrad, 1837, but when 

 adult is more triangular and equilateral. The fossil specimens reach a size 

 considerably in excess of any that I have hitherto examined among recent 

 shells. Between those of equal size I have not observed any differences which 

 might serve as a basis for even a varietal name, but the differences of the adults, 

 above noted, probably render it desirable to keep the two forms separate until 

 more is known about them. A single valve of the recent type was found in the 

 Caloosahatchie marl. 



Tellina (Merisca?) acrocosmia n. sp. 



PLATE 46, FIGURE 10. 



Oligocene of the Bowden beds of Jamaica, West Indies. 

 Shell small, rounded, triangular, with nearly central, inconspicuous beaks, 



