X* 



The Nautilus. 



VouXX. FEBRUARY, 1907. No. 10. 



NEW SPECIES OF STENOTREMA AND PARAVITBEA FROM ALABAMA. 



BY GEORGE H. CLAPP. 



Vitrea (Paravitrea) aldrichiana n. sp. PI. V, figs. 8, 9, 10, 11. 



Shell small, widely, perspectively umbilicate, flattened, slightly 

 convex above and below, the periphery well rounded ; greenish- 

 white almost transparent, highly polished with very faint growth 

 lines and on the body -whorl a few impressed lines spaced irregularly. 

 Whorls five, those of the spire rounded at the well-impressed suture; 

 umbilicus contained about three times in the diameter of the shell 

 and showing all of the volutions ; peristome forming two-thirds of a 

 circle ; lip simple. 



.Slightly below the periphery, and in the last half of the body 

 whorl are about four teeth which are longer, vertically, than wide, 

 and, apparently, project at both the upper and lower ends; i.e., 

 they are double pointed. 



Greater diam. 2, lesser 1.9, alt. 1 mm. 



Type from the slope of the Cumberland Plateau in Jackson 

 County, Ala., close to the state line, and about 2 miles S. E. of An- 

 derson, Tenn. Collected by Herbert H. Smith, who found but four 

 specimens of this excessively rare species, the others being from 

 " Buck Creek Cove," Franklin County, Tenn., " Cove in Valley of 

 Little Crow Creek," and "Bennett's Cove, near State Line," both 

 Jackson County, Ala. 



These four localities are near together on the Cumberland Plateau, 

 uuil along the Tenn. -Ala. boundary. 



It is interesting to note that Mr. Smith collected both V. multi- 



