i8i Eocene Mollusca 15 



Shell as in figure; whorls eight, the first three forming the 

 nucleus which is smooth, the periphery of remaining whorls or- 

 namented with rather sharp spines, body whorl with eleven ribs, 

 spaces between shining and smooth, though very fine lines of 

 growth are present; shell shouldered above the spines and orna- 

 mented with three spiral lines, also slightly spinous, direcflly 

 above the others; suture distindl; aperture nearly two-thirds the 

 length of the shell; columella with two large plaits, with a small 

 one between; outer lip lirate within; basal part of body whorl 

 closely covered with fine spirals partly impressed and partly 

 raised. 



This species resembles in general outline f '. percursor Dall, 

 but that species has no shoulder spines and its ribs are flattened. 

 This form is related to V. petrosus Con., but is much more slen- 

 der, smoother, has stronger ribs and m-ore whorls. 



Locality. — Alabama: Lisbon bed, Alabama river. 



Pelecypoda. 



LUCINA. 



Lucina astartiformis n. sp., PI. 5, figs. i. a. 



Shell small, rather solid; beak pointed and small; surface with 

 numerous concentric raised laminae which nearly overlap at vent- 

 ral margin; between the striae are fine radiating lines from beak 

 to margin; striae terminating at hinge line in raised points; hinge 

 long and narrow^ anterior of shell concave along the hinge line; 

 escutcheon smooth; cardinal teeth separated by a deep quadran- 

 gular fosset; no laterals; muscular impressions distindl; pallial 

 line simple; posterior part of valves somewhat flattened; margin 

 smooth. 



This species is doubtfully placed in Liichia. 



Locality. — Alabama: Cho(5law Corner. 



KELLL4. 



Kellia prima n. sp., PI. 5, figs. 3, a. 



Shell small, oblong-ovate; both posterior and anterior angu- 

 lated and covered with strong folds radiating from beak to 

 margin; substance of shell thin; surface with very fine micro- 

 scopic pundlures; cardinal teeth ere(ft, with deep pit between; 

 lateral tooth small, short, curved, a triangular fosset between it 



