Caves and their Faunas in Florida and South Georgia 19 



Sink (JRH). Pasco County. Nexus Sink (JRH), 38 m (125 ft) well at 

 Lacoochee (JRH). Suwannee County: Challenge Sink (JRH), Cisteen 

 Sink (JRH), Orange Grove Sink (JRH), Peacock Springs Cave System 

 (JRH), Sim's Sink (JRH). Wakulla County: McBride Slough (JRH), 

 River Sinks (JRH), Sally Ward Spring (JRH), Shepard Blue Spring 

 (JRH). 



ETYMOLOGY: Named for Horton H. Hobbs, Jr., the collector 

 of the type series (Shoemaker 1941). 



REMARKS: Holsinger (1972) placed this unique species in the 

 monotypic hobbsi group. 



REFERENCES: Franz 1982 (conservation status); Holsinger 1972 

 (records, key), 1977 (taxonomy); Shoemaker 1941 (type description); 

 Warren 1961 (records). 



Order DECAPODA 



Family PALAEMONIDAE 



Palaemonetes cummingi Chace 



SQUIRREL CHIMNEY CAVE SHRIMP 



Palaemonetes (Palaemonetes) cummingi Chace, 1954. Journal 



of Washington Academy of Science 44(10):319-323. TYPE LOCALITY: 



Squirrel Chimney, Alachua County, Florida. Holotype, female (USNM 



95795), Robert B. Gumming (coll.), 11 July 1953. 



Palaemonetes cummingi. — Warren, 1961:6. 



OTHER COMMON NAMES: Florida Cave Shrimp. 



DISTRIBUTION: OCALA FAUNA (Upper Suwannee). Known 

 only from the type locality. This cave shrimp was proposed as Threatened 

 by the Florida Committee on Rare and Endangered Plants and Animals 

 (Franz 1982) and was listed as Threatened on 21 June 1990 under 

 provisions of the U. S. Endangered Species Act of 1973, as amended 

 (Anonymous 1990). Because it is known from only one site in a 

 rapidly developing urban area, the shrimp is vulnerable to extinction 

 from groundwater contamination and deterioration of the surface habitat 

 around the Squirrel Chimney sinkhole. Divers failed to find shrimps 

 after an extensive search in this underwater cave in October 1992 

 (Morris and Butt 1992). 



ETYMOLOGY: Named in honor of Robert B. Gumming, the 

 collector of the first specimen (Chace 1954). 



REFERENCES: Chace 1954 (type description); Dobkin 1971 (larval 

 development); Franz 1982 (conservation status); Hobbs et al. 1977 

 (description); Strenth 1976 (taxonomy). 



