16 
John R. Holsinger and David C. Culver 
include all known locality records. A question mark after a cave name 
indicates a questionable species record. Additional data on the geo- 
graphic distribution or taxonomy of a species are sometimes given 
under “Comments,” following the list of cave records. 
PHYLUM PLATYHELMINTHES 
Among the free-living flatworms (class Turbellaria) found in Virginia 
and east Tennessee caves are alloeocoels and tricladids. The former are 
restricted to a single, curious species also recorded from single caves in 
Kentucky and West Virginia; it is the only alloeocoel reported from 
caves (Carpenter 1970a, Holsinger et al. 1976). The other flatworms are 
planarians in the genera Sphalloplana and Phagocata. 
Cavernicolous flatworms are generally encountered in drip or 
stream-fed pools or on the flat surface of rocks in small streams; 
population numbers fluctuate greatly. Outside the study area, Sphal- 
loplana chandleri is recorded from springs in Davidson County, Tenn., 
and Floyd County, Ind. (Kenk 1977), and is apparently a relatively 
widespread stygobiont. In contrast, the troglobites Sphalloplana con- 
similis (Fig. 13E) and S. virginiana have narrowly delimited ranges (Fig. 
6) and are known only from the caves listed below (see Hyman 1945, 
Kenk 1977). The presence of Sphalloplana percoeca in northeastern 
Tennessee is highly questionable. In redescribing this species, Kenk 
(1977) listed many localities in Alabama, Kentucky, and Tennessee and 
indicated that the range might possibly extend into West Virginia and 
Georgia. He also pointed out that some of these records, especially 
those from Tennessee, need verification. 
Phagocata gracilis is recorded from numerous localities (viz., caves, 
springs, headwaters of small streams) in the eastern and east-central 
United States (Kenk 1970). Although Phagocata subterranea (Hyman 
1937) was previously reported from Banners Corner Cave by Holsinger 
(1963a, 1964, 1966), it is apparently a subterranean ecophenotype of P. 
gracilis and is therefore now considered a synonym of this species by 
Kenk (1970). Phagocata morgani , common in the subterranean ground- 
waters of the Ward Cove karst in Tazewell County, is recorded from 
many springs, small streams, and caves in eastern North America 
(Carpenter 1970b). 
Order Alloeocoela 
Family Prorhynchidae 
Geocentrophora cavernicola Carpenter (TB?) 
Virginia. — Tazewell Co.: Fallen Rock Cave. 
Geocentrophora sp. 
Virginia. — Lee Co.: Cliff Cave. 
