62 



Richard Franz, Judy Bauer and Tom Morris 



Fig. 6. Distribution of Procambarus horsti, Procambarus orcinus, and 

 Procambarus pallidus. 



area that separates the two faunas, although more exploration in the 

 50-km-wide hiatus may change this view. We suggest that the evolutionary 

 history of the pallidus complex involved independent invasions of 

 ancestral leptodactylus-like stocks into geographically isolated ground- 

 water reservoirs associated with the Cody Scarp in the Woodville and 

 Upper Suwannee areas. Subsequent evolution led to the differentiation 

 of the horstiorcinus branch in the St. Marks-WakuUa-Wacissa drainages 

 and the pallidus branch in the Suwannee basin. 



Lineage 6 — Hobbs (1942) and Hobbs and Franz (1986) pointed 

 out the similarities between Troglocambarus maclanei and members 

 of the Seminolae Group in the genus Procambarus. They felt that 

 these features indicated a evolutionary relationship between the two 



