LIST OF NORTH AMERICAN LAND AND FRESH-WATER SHELLS 

 RECEIVED FROM THE U. S. DEPARTMENT OF AGRICULTURE, 

 WITH NOTES AND COMMENTS THEREON. 



BY 

 Robert E. C. Stearns, 



AdJTind Curator of the Department of Mollusks. 



The following list iachules a number of molluscan forms received at 

 various times by the TJ. S. National Museum from the above Depart- 

 ment, being the collections made by Dr. C. Hart Merriam, in charge 

 of the Division of Biological Explorations, and by his assistants, dur- 

 ing the years 1889-00. The list contains the names of a few species 

 not before collected, which have been described by the writer in a i)re- 

 vious volume of the Proceedings of the National ^Museum ; and further, 

 many interesting facts pertaining to the geographical distribution of 

 some of the forms not before made known. 



Class GASTROPODA. 

 Order PULMONATA. 

 Sub order Geophila. 



Glandina decussata Desh. 

 Painted Cave, month of the Pecos River, Texas. William Lloyd. (Mus. No. 118385). 



Two examples of the above were detected at this locality ; one fresh 

 and in fine condition, the other bleached and broken. The species 

 seems to be tolerably well characterized for a Glandina, though there is 

 scarcely a doubt that too many have been made in this group. 



Vitrina pfeifferi Newc. 



Bridger'sPass, Wyoming, " near a spring in the caQon ;" several examples. V. Bailey 



(Mns. No. 118484.) 



Helix (Patula) striatella Anth. ; var. Cronkhitei Newc. 



Bridger's Pass, Wyoming, edge of a "spring in the canon." V. Bailey. (Mus. No. 



118481.) 



Proceedings National Museum, Vol. XIV— No. 844. 



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