1911.] 



NATURAL SCIENCES OF PHILADELPHIA. 



525 



MOLLUSCA OF ARKANSAS, LOUISIANA AND MISSISSIPPI. 

 BY E. G. VANATTA. 



The following species of shells were collected by Mr. Clarence B. 

 Moore and presented to the Academy of Natural Sciences. In the 

 absence of any records covering the region, it was thought desirable 

 to list the species found. 



Bifidaria contracta climeana n. var. Figs. 1.. 2, 3. 



Shell similar to typical contracta Say, but the parietal tooth lacks 

 the inner continuation, being L-shaped. 

 Alt, 2.29, diam. 1.43 mm. 



/. m m. 



Type in the collection of the Academy number 97,605 from near 



Anderson Landing, on the Sunflower River near the confluence with 



the Yazoo River, Sharkey Co., Miss. Also in the collection from 



near Blakeley, Baldwin Co., Ala.; Simpson Island, Baldwin Co., 



Ala. (Clarence B. Moore); Calera and Wetumpka, Ala. (H. H. 



Smith); O'Neil Landing, Yazoo Co., Miss. (C. B. Moore); City 



Park, New Orleans, La. (S. N. Rhoads) ; above Eagle Island Landing, 



Franklin Parish and Sycamore Landing, Morehouse Parish, La. 



(Clarence B. Moore); Carlock Place and Tebbs Place, Ashley Co., 



and near Menard Landing, Arkansas Co., Ark. (C. B. Moore); 



Navidad River bottom, Jackson Co., Tex. (J. D. Mitchell). 



Named in honor of Mr. Arthur W. Clime, one of Mr. Moore's 



assistants. 

 35 



