THE NAUTILUS. 25 



distinct enough to be separated. The largest of the Sargent 

 shells that I have seen measures, gr. diain. 18-t, less. 16^, alt. 

 7 mm., whorls 5f, umbilicus less than one- third of the diameter 

 of the shell. A single shell collected by H. H. Smith in the 

 same locality measures 19f X 8^ mm., whorls 6. 



In cumberlandiana there is a single row of small, faint, squar- 

 ish, brown markings just below the carina on the base; in the 

 Woodville shells these spots are larger and much darker. Figs. 

 2. Woodville, Ala. 



P. CUMBERLANDIANA ALABAMA n. var. PL I, Figs. 3. Gurley, 

 Ala. 



Differs from the type by its larger size, much finer and flatter 

 ribs and more convex shape; carina white, sharp, but less 

 pinched than in the type and the ribs on the carina much lower 

 and less accentuated. Ground color lighter than in the Sewanee 

 shells and markings darker. There is a single row of squarish 

 flames just below the carina on the base. Umbilicus about one- 

 fourth the diameter of the shell. 



Gr. diam. 21f , less. 19i, alt. 9 mm. Aper. 9| X 8 mm. 

 Whorls 6. Type. 



Gr. diam. 21, less. 18f, alt. 10 mm. Aper. 9x7 mm. 

 Whorls 6. Huntsville. 



Collected by H. H. Smith in 1905 on Vincent Mountain, 

 near Gurley and on Smithers Mountain, 5 miles N. W. of 

 Huntsville, both in Madison Co., Ala. Types No. 7132 of rr>y 

 collection (Gurley) and paratypes in the collections of the 

 Academy of Natural Sciences, Philadelphia, and Dr. Bryant 

 Walker, Detroit, Mich. 



P. CUMBERLANDIANA coLUMBA n. var. PL I, Fig. 5. Dove, 

 Term. 



Like the type in sculpture, color and markings, but not 

 pinched at the carina. Heavily ribbed above and on the carina, 

 but below the ribs are much finer, about 2.1. There is a single 

 row of chocolate brown, diagonal markings immediately below 

 the carina. 



Gr. diam. 18, less. 16, alt. 8 mm. Aper. 7 X 7 mm. 

 Whorls 5. 



