14 Richard Franz, Judy Bauer and Tom Morris 



Rosenau et al. (1977) listed over 300 springs in 42 Florida counties, 

 most of which have their water sources in the Floridan aquifer, particularly 

 the Ocala Group of Eocene limestones. Twenty-seven of these springs 

 have recorded water flows that average six billion gal/day each and 

 are considered first magnitude springs (Rosenau et al. 1977). Counties 

 with saturated riverine karsts where biological specimens have been 

 retrieved include Columbia, Dade, Gilchrist, Hamilton, Hernando, Jefferson, 

 Lafayette, Lake, Leon, Levy, Madison, Orange, Pasco, Pinellas, Seminole, 

 Suwannee, Wakulla, and Washington. Extensive underwater cave systems 

 found in these counties form important conduits for local groundwater 

 circulation. Knab (1991) noted that six of the ten longest known 

 underwater caves in the world are located in the saturated karsts of 

 the Suwannee and Wakulla drainage basins in Florida — Falmouth Spring 

 (or Cathedral Sink), 3,291.8 m (10,828.3 ft); Chip's Hole, 3,169.9 m 

 (10,427.3 ft); Sullivan's Sink-Cherry Sink, 2,590.8 m (8,522.4 ft) 

 (Leon County, Wakulla River); Manatee Springs, 2,342.4 m (7,705.3 

 ft) (Levy County, Suwannee River); Luraville-Telford Spring, 2,194.5 

 m (7,218.7 ft) (Suwannee County, Suwannee River); Hornsby Sink, 

 2,055.3 m (6,760.8 ft) (Alachua County, Suwannee River). Recent 

 explorations of the Leon Sinks complex under Leon and Wakulla 

 counties have revealed over 14,288 m (47,000 ft) of continuous mapped 

 passage (Gary Knecht, personal communication, Tallahassee, Florida). 



SPECIES ACCOUNTS 

 FOR FLORIDA AND SOUTH GEORGIA TROGLOBITES 



Phylum MOLLUSCA 



Class GASTROPODA 



Order PROSOBRANCHIA 



Family Hydrobiidae 



Dasyscias franzi Thompson and Hershler 



SHAGGY GHOSTSNAIL 



Dasyscias franzi Thompson and Hershler, 1991. Malacological 



Review 24:57-61. TYPE LOCALITY: Blue Spring Cave System, Econfina 



River, Washington County, Florida. Holotype (UF 93964), 27 paratypes 



(UF). 



DISTRIBUTION: ECONFINA CREEK FAUNA. Known only from 

 the type locality. 



ETYMOLOGY: Named for Richard Franz, discover of the snail. 

 REFERENCES: Thompson and Hershler 1991 (original description, 

 SEM photograph). 



