ACAD. NAT. SCI. PHILA-, 2ND SER., VOL. XV 



jW^ 



PLATE XL. 





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Scale in wiles 



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DISTRIBUTION QF LICUUS AND OXYSTYLA IN FLORIDA 



®" presence o/ Ox^sfyla. 



+ « presence o\ LiyiLu.9 



M» man^rowe k^y- Li^uusat^enl «, 



F- formerly ^e-serrf- dead shells on the a^urti 



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Long Island + 



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Mar 



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4 







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PILSBRY: VARIATION AND ZOOGEOGRAPHY OF UGt US 



