^"i803^''] PROCEEDINGS OF THE NATIONAL MUSEUM. 747 



taiice; yet it would not be ;i matter that need eause snrpii.se to liud in 

 the course of twelve months some disciple of the " new school " rushing 

 into print with a " re\ ision " of this peculiar group, iu which every third 

 individual shell is honored or dishonored with a generic, subgeneric, or 

 some other title, to say nothing of elaborate, though more general, 

 divisions, subdivisions, etc., ad Uhitnni^ in frivolous iierplexity. 



The National Museum contains a magnificent and exhaustive series 

 of striflosa and what are now regarded as its varieties, probably sur- 

 passing all others excepting that contained in Mr. Hemphill's i)rivate 

 collection; it includes not only the ample series received directly and 

 indirectly from Mr. Hemphill, but numerous ac(^essions, large and 

 small, made by various parties, in the course of exi)lorations and travel 

 within the general territory inhabited by strufosa and its allies. 



Genus POLYGYRA 8ay. 

 Helix (Polygyra) amiforinis Inland. 



Ten specimens. 



Bay ^St. Louis, Mississippi; Vernon Bailey, April 30, 1892. "In the 

 pine woods''; examples mostly dead and bleached. The foregoing has 

 been fouiul to inhabit Florida, Alabama, Louisiana, Texas, and the 

 Lidian Territory. Numerous beds of sejuifossil specimens are found 

 in Middle Alabama. (Binney.) 



Helix (Polygyra) Dorfeuilliana Lea. 



Dead shells. 



Stone County, Mo.,' Vernon Bailey, on side hills near Marble Cave. 



This form is widely distributed through nniny of the Southern States, 

 having been collected in Florida, Louisiana, Texas, Arkansas, Indian 

 Territory, etc., and as far to the north as Kentucky, opposite Cincin- 

 nati, Ohio. Mr. MclJaniel reports its occurrence in eastern Texas, iu 

 Anderson County. 



Genus MESODON Rafinesque. 



Helix (Mesodon) albolabris Say. 



One specimen. 



Stone County, Mo., near Marble Cave, on sidehills, with the previous 

 species ; Vernon Bailey. 



This familiar form has a wide geographical distribution. The 

 national collection contains numerous examples, forming an exceed- 

 ingly fine series, embracing nearly seventy trays. 



The geographical range of albolabris extends from Maine to Minne- 

 sota, inclusive of Canada (at various places), thence southerly to 

 Arkansas, Mississippi, and Florida, and the States and Territories 

 included between the above northerly and southerly lines, comprising, 

 as shown in the collection, a representation of twenty-thre(^ of the 

 States, etc. 



