MOLLUSCA. 681 



referred to the genus Lunatia instead of Scala although the 

 generic reference cannot be assured from the cast alone. The 

 species differs from other members of the genus Lunatia in the 

 New Jersey faunas, in the much broader columellar cavity in 

 the casts. The specimen which partially preserves the shell dif- 

 fers from the other in being somewhat canaliculate in front, but 

 the length of the canal cannot be determined, and the columella 

 bears a single, strong, revolving rib, shown as a groove in the 

 cast, and the shell is undoubtedly one of the Faciolaridae or 

 Volutidae. Whitfield's illustration of the surface characters is 

 much overdrawn. , 



Formation and locality. Navesink marl, Crosswicks Creek 

 (Whitfield). 



Geographic distribution. New Jersey. 



Genus AMAUROPSIS Morch/ 



Amauropsis meekana Whitfield. 

 Plate LXXVII, Figs. 1-3. 



1876. Amauropsis paludin&formis Gabb, Proc. Acad. Nat. 



Sci. Phil. (1876), p. 296. (Not A. paludinaeformis 



M. & H.) 

 1892. Amauropsis Meekana Whitf., Pal. N. J., vol. 2 (Monog. 



U. S. G. S., vol. 18), p. 131, pi. 16, figs. 22-25. 

 1905. Amauropsis meekana Johns., Proc. Acad. Nat. Sci. Phil. 



(1905), p. 21. 



Description. "Shell of medium size, elongate-subovate ; spire 

 moderately elevated, only about two-thirds as high above the 

 aperture as the length of the aperture; volutions five or five and 

 a half in the largest specimen; ventricose, with distinct, well 

 marked sutures, which are very slightly channeled; body volu- 

 tion more distinctly ventricose than the others; axis solid; aper- 

 ture ovate, acute at the upper end, rounded and slightly effuse 

 below ; outer lip thin and sharp ; columella somewhat thick- 

 ened by the deposit of the lip, and grooved below the margin of 



