231 Midway Stage "7 



cut, I /3 miles N. E. of Clayton. Another specimen was obtained 

 i mile N. of Midwa3^ 



XENOPHORA. 

 Xenophorasv., PI. 12, figs. 12, 13. 



Two casts of specimens belonging to this genus were found in 

 Alabama, both of which are herewith figured. One is from i 

 mile N. of Midway, the other from i mile N. of Prairie Blutt. 



NATICA. 

 Natica {Girodes) alabamiensis , PI- 12, fig. 14- 



Syn. N. {G.) alabamiensis Whitf., Am. Jr. Conch., i, 1865, 



p. 265, pi. 27, figs. 9, 10. 

 Whitfield's original description.— ''Sh^W oblique, subpalutose; 

 spire elevated; volutions four, flattened on top; aperture large, 

 broadlv subovate, columella flattened and slightly grooved; um- 

 bilicus' minute or none; surface marked by fine, wavy revolving 

 lines, strongest near the upper part of, the volution, crossed by 

 distinct lines of growth. 



'' Dijuensions. —L&wgt^ .80 inch, width .62 inch. 



"Z^m///>'.— Six miles above Claiborne, Alabama, west side ot 



river. " -1 o 



Localities.— K^^ANSAS: ? Near Olsen's switch, a few miles S. 

 W. of I^ittle Rock. . 



Alabama: Naheola; Matthews' Landing; i mi. W. 

 of Oak Hill P. O. 

 Type. — Hall collection. 



r. • PI T9 fio" I ^. 



Natica medtavta r\. s^., n. i^, e,- 



specific characterization.— Gerxer&\ form and size as indicated 

 by the figure (a cast); composed of about 5 whorls, very small 

 above, while the body whorl is very large; sides of whor s 

 rounded slightly shouldered or flattened above; suture well 

 marked; mouth elliptical in general outline but pointed above; 

 outer lip acute at the margin but thickening very rapidly withm 

 and forming a varix; substance of the shell thm 



The thickened outer lip reminds one of N. subpatula Desh., ot 

 the Paris Basin, but the lip thickens even more rapldl3^ frag- 

 ments indicate specimens of considerably larger size than the 

 specimen figured. 



Localities.— (^no^GiK: Uppermost Midway limestone as ex- 

 posed on Chattahoochee river at Ft. Crames. 



