15 



AMNICOLA GALBANA, Hold. 



PLATE 1. FIG. 9. 



A. testa (inter DECISAM et PALLIDAM intermedia) conica, 

 solidula, laevi, umbilicata, apertura late ovata. Long. 4 

 mm. 



DESCRIPTION. 



SHELL conical, smooth, shining, composed of 

 4J not very convex whirls, having the lines of 

 growth very fine: base with a narrow umbilic: 

 aperture nearly circular, slightly produced in an 

 angle posteriorly; labium slightly thickened; a 

 small portion of it, which is rectilinear, in slight 

 contact with the body whirl. 



COLOR . . . bleached and chalky. 



GEOGRAPHICAL DISTRIBUTION. Occurs fossil 

 in the freshwater newest tertiary deposit in 

 Sussex county, New Jersey. 



OBSERVATIONS. 



Figure 3 of A. decisa is a tolerably good re- 

 presentation of this shell, which differs in having 

 a small, well defined umbilic. 



