VARIATION AND ZOOGEOGRAPHY OF LIGUUS IN FLORIDA. 441 



be mentioned that Oxystyla floridensis of the southern 



keys also occurs at Cape Sable and extends up the west Crenatui 



coast to Pavilion Key. 



Fig. 3. Southeastern coast of Florida from Lower Matecumbe 

 Key to New River, showing the distribution of pure races of L. crenaim 

 (first incursion, horizontal lines), L.f. roseatus (second incursion, black), 

 and of the hvorid race formed with L. /. cadaneozonatus, which over- 

 run part of the area believed to have been previously occupied by the 

 two pure races (third incursion, cross hatched). Hypothetical former 

 extension of hybrid race indicated by dotted lines. 11 



Whether Liguus occurs on the mainland near Key Largo is un- 

 no data are available on the region indicated bv Queries (?) 



known, 



on the map. Although Key Largo is now separated from 



land. 



peninsula 



cent* As late 



inside passage 



a " portage 

 with mastic 



IX 



lengths. 



abo 



•.» 



Vignoles, Obmrvations upon the Florida* 



very young limber 



cr £77 aft/ j 



ro 5 eatus. 



crevatus X • 



roseaZLU XCa$ 



TarieczcnctTus 



