76 THE NAUTILUS. 



also show through the body of the shell. Beak small and smooth, 

 the cardinal tooth strongly projecting. 

 Lon. 2^ mm.; alt. 2^ mm. 

 LOCALITY. Wood's Bluff, Ala. 



REMARKS : This species is mentioned by Prof. Ball as Vertieor- 

 dia sp. indet. The description is made from a good specimen found 

 by the writer. The shell is rather small for even this genus. 



ACTEON POMILIUS Con., var. MULTANNULATUS. n. var. PI. v. 

 fig. 11. 



The specimen here figured differs from the typical form by having 

 much more numerous raised lines with shallower interspaces. The 

 spire is higher and the shell more slender. The Acteon found by me 

 at Wood's Bluff is different from the form figured by Prof. G. D. 

 Harris, not having any smooth space on the body-whorl. These so- 

 called species appear to belong in one basket. 



Height 9 mm.; diam. 6 mm. 



LOCALITY. Six miles east of Thomasville, Ala., Wood's Bluff 

 beds. 



LEPTON VAUGHANI n. sp. PI. V, fig. 12. 



Shell small, surface smooth and shining ; lines of growth very fine, 

 shell rather triangular in shape, longer than high ; slightly inequila- 

 teral. Muscular scars showing, the posterior one rather long and 

 narrow. 



Long. 3 mm. ; alt. 2 mm. 



LOCALITY. Wood's Bluff, Ala. 



REMARKS : This species seems to be an undoubted member of 

 this genus, as it has the proper dentition ; some specimens are equi- 

 lateral. Named in honor of T. Wayland Vaughn of the U. S. Geo- 

 logical Survey. This seems to be the first Lepton found in the 

 Eocene. 



NEW LAND SHELLS FROM ARIZONA AND NEW MEXICO. 



BY GEO. H. CLAPP. 



Bifidaria ( Chcenaxis) tuba subsp. intuscostata. 



Differs from the type, externally, by its larger size, length 4, diam. 

 2 mm. and the greater number of whorls, 6J. The smallest normal 



