FOSSILS OF THE WHITE RIVER TERTIARY. 



MOLLUSCA. 



GASTEROPODA. 



PULMONATA. 



LIMN.ffiID.ffi. 



Genus LIMNJEA, Lamarck (see page 531.) 



L, i in it H3 a M e c k i a n :i , E. & S. 



Plate 45, figs. 5, <j, &, c. 



LrmiHva MeeMana, Evans anil Shumard, MS. 



Limncea MeeMana, Meek and Haydeu (18G0), Proceed. Acad. Nat. Sci. Philad., XII, 431. — Meek (18G4), 

 Smithsonian Check-List Nortb American Tertiary Invertebrate Fossils, 13. 



Shell rather large, conical-subovate; spire less than half the length of 

 the shell, acutely pointed at the apex; volutions five and a half to six, con- 

 vex, last one ventricose, and comparatively large; suture well defined. 

 Aperture rather narrow-ovate, angular above and rounded below ; lip slightly 

 dilated at the lower part of the columella; surface marked by moderately 

 distinct lines of growth. 



Length, 1.15 inch ; breadth, 0.66 inch ; apical angle nearly regular, 

 divergence 54°. 



This fine Limncea, is quite similar to several of the species figured by 

 Edwards in his Monograph of the Eocene Mollusca of England, published 

 by the Palseontographical Society, but seems to present well-defined specific 

 differences from them all. 



Dr. Evans and Dr. Shumard had specimens of this species that they 

 intended to publish. We also had others from the same locality, and not 

 wishing to name species that they desired to describe, I wrote to Dr. Shu- 



508 



