TRANSACTIONS OF WAGNER 

 766 



TERTIARY FAUNA OF FLORIDA 



rated by slightly wider interspaces, which cover the whole surface ; sub- 

 margins slightly impressed; ears small, unequal; hinge-margin straight, basal 

 margin slightly indented by the ribs; a slight nodulation is perceptible on 

 the backs of the ribs. Alt. 30, lat. 23 mm. 



This differs from L. staminea Conrad (Journ. Acad. Nat. Sci. Phila., 2d 

 Ser., i., p. 126, pi. 13, fig. 30, 1848) in its less angular and oblique outline, 

 more prominent ears, and stronger and more regular sculpture. 



Lima (Lima) tampaensis n. s. 

 Plate 35, Figure iS. 



Chipolan Oligocene, near Bartow, and on the shores of Hillsborough 

 Bay, near Tampa, Florida ; Dall. 



Shell very inequilateral, the anterior side short, moderately gaping ; the 

 posterior side long, straight, with a wide impressed submargin ; base expanded 

 and rounded; hinge-line very short, with very small ears, the anterior larger; 

 pit large, triangular, not oblique; exterior with about twenty-seven narrow, 

 smooth, rounded radial ribs separated by wider channelled interspaces; the 

 basal margin is serrated by the sculpture; the submargins are finely striated. 

 Alt. 35, lat. 27, diam. 14 mm. 



The chief characteristics of this species lie in its simple, distant, rounded 

 ribs and the great obliquity of the valves. 



Lima (tampaensis var. ?) costulata n. s. 

 Plate 35, Figure 24. 

 An imperfect valve was obtained from the Oligocene of Hillsborough 

 Bay, near Tampa, Florida. 



Shell like the preceding but broader, with more numerous (thirty-five) 

 ribs, which are separated by very narrow interspaces and in perfect specimens 

 are probably minutely nodulous ; the posterior submargin is also more deeply 

 impressed. 



This is probably a distinct species, but the material is insufficient to fully 

 define its characters, and I mention it as a variety merely in order that it may 

 not be lost sight of 



Lima (Lima) smirna n. s. 

 Plate 30, Figure 3. 

 Chipolan Oligocene of Hillsborough Bay, near Tampa, Florida ; Dall. 

 Shell ovate, slightly inequilateral, smooth, except for incremental lines ; 



