References

Cheatum, E.P. and R.W. Fullington. 1971.  The Aquatic and Land Mollusca of Texas Part One: The Recent and _____Pleistocene Members of the Gastropod Family Polygyridae in Texas. The Dallas Natural Science Association. _____Dallas, TX, USA.

 

Dictionary.com, LLC. 2012. <URL:http://dictionary.reference.com/browse/scintilla?s=ts>  Accessed 6 April 2012.

 

Encyclopedia of Life. 2012. <URL: http://eol.org/pages/486544/overview>  Accessed 6 April 2012.

 

Freed, Arthur. 1982.  A treefrog’s menu:  selection for an evening’s meal.  Oecologia.  Vol. 53 No. 1: 20-26.

Gugler, C.W. 1963.  The eggs and egg-laying habits of some Midwestern land snails. Transactions of the Kansas            _____Academy of Science. Vol. 66 No. 2: 195-201.

 

Hinkman, G.P., L.S. Roberts, S.L. Keen, A. Larson, D.J. Eisenhower. 2009.  Animal Diversity, fifth edition.  McGraw-Hill. New York, _____NY, USA.

 

Infoqis Publishing, Co. 2012.  <URL: http://www.snail-world.com/>  Accessed 2 April 2012.

 

McCoy, K.D., T.D. Nudds. 1997.Interspecific variation in climbing by gastropods: implications for transmission of

_____Parelaphostrongylus tenuis.  American Midland Naturalist.  Vol. 137 No. 2: 320-328.

 

Morton, J.E. 1958. Torsion and the adult snail; a re-evaluation J. Mollus. Stud.  33(1): 2-10.

 

Nature Conservancy of Texas. 2008.

_____<URL:http://www.nature.org/ourinitiatives/regions/northamerica/unitedstates/texas/multimedia/rio_grande_fact_sheet_1008

______lowres-4-1.pdf> Accessed 6 April 2012.

Pilsbry, H.A. 1930.  Anatomy and relationships of some American polygyridae. Proceedings of the Academy of             _____Natural Sciences.  82: 303-327.

 

Pilsbry, H.A. and L. Hubricht. 1956. Beach drift polygyridae from southern Texas. The Nautilus.  63: 3.

Pomeroy, D.E. 1968. Dormancy in the land snail, Helicella virgata (Pulminata : Helicidae). Australian Journal of _____Zoology 16: 857–869.

 

Thorp, J.H. 1991. Ecology and Classification of North American Freshwater Invertebrates. P. 290.

 

Washington State University. 2012.

_____<URL: http://shells.tricity.wsu.edu/ArcherdShellCollection/Gastropoda/Pulmonates.html>

_____Accessed 6 April 2012.

Woolridge, D. and V. Nolan Jr. 1962.  Food habits and feeding behavior of the white-eyed vireo.  The Wilson             _____Bulletin.  Vol. 74 No. 1:68-73.

 

Webb, G.R. 1950.  The sexology of Polygyra septemvolva say, life-history notes, possible utility, and data on                                      _____stenotrema (Mollusca, Gastropoda, Pulmonata, Polygyridae).  Transactions of the American Microscopical Society.

_____Vol. 69 No. 4: 387-393.