152 
John R. Holsinger and David C. Culver 
Culver, David C. 1985. Trophic relationships in aquatic cave environments. 
Stygologia 1:43-53. 
Culver, David C., and J. R. Holsinger. 1969. Preliminary observations on sex 
ratios in the subterranean amphipod genus Stygonectes (Gammaridae). 
Am. Midi. Nat. 82:631-633. 
Culver, David C., J. R. Holsinger, and R. A. Baroody. 1973. Toward a pre- 
dictive cave biogeography: the Greenbrier Valley as a case study. Evolution 
27:689-695. 
Cummins, Kenneth W., and M. J. Klug. 1979. Feeding ecology of stream 
invertebrates. Ann. Rev. Ecol. Syst. 10:147-172. 
Curran, Charles H. 1965. The Families and Genera of North American Dip- 
tera. Henry Tripp Publ., Woodhaven, N.Y. 
Dearolf, Kenneth. 1953. The invertebrates of 75 caves in the United States. 
Proc. Penn. Acad. Sci. 27:225-241. 
Deeleman-Reinhold, Christa L. 1981. Remarks on origin and distribution of 
troglobitic spiders. Proc. Eighth Int. Cong. Speleol., Bowling Green, Ky. 
1:305-308. 
Dickson, Gary W. 1975. A preliminary study of heterotrophic microorganisms 
as factors in substrate of troglobitic invertebrates. Bull. Nat. Speleol. Soc. 
37:89-93. 
Dickson, Gary W. 1976. Variation in the ecology, morphology and behavior of 
the troglobitic amphipod crustacean Crangonyx antennatus Packard 
(Crangonychidae) from different habitats. M.S. thesis, Old Dominion 
Univ., Norfolk. 
Dickson, Gary W. 1977a. Variation among populations of the troglobitic 
amphipod crustacean Crangonyx antennatus Packard living in different 
habitats. I. Morphology. Int. J. Speleol. 9:43-58. 
Dickson, Gary W. 1977b. Behavioral adaptation of the troglobitic amphipod 
crustacean Crangonyx antennatus to stream habitats. Hydrobiologia 
56:17-20. 
Dickson, Gary W. 1979. The importance of cave mud sediments in food 
preference, growth and mortality of the troglobitic crustacean Crangonyx 
antennatus Packard (Crangonyctidae). Crustaceana 36:129-140. 
Dickson, Gary W., and J. R. Holsinger. 1981. Variation among populations of 
the troglobitic amphipod crustacean Crangonyx antennatus Packard 
(Crangonyctidae) living in different habitats. III. Population dynamics and 
stability. Int. J. Speleol. 11:33-48. 
Dickson, Gary W., and P. W. Kirk. 1976. Distribution of heterotrophic 
microorganisms in relation to detritivores in Virginia caves (with supple- 
mental bibliography on cave mycology and microbiology). Pages 205-226 in 
The Distributional History of the Biota of the Southern Appalachians, Part 
IV: Algae and Fungi, B. C. Parker and M. K. Roane, editors. Univ. Press 
Virginia, Charlottesville. 
Dickson, Gary W., J. C. Patton, J. R. Holsinger, and J. C. Avise. 1979. 
Genetic variation in cave-dwelling and deep-sea organisms, with emphasis 
on Crangonyx antennatus (Crustacea: Amphipoda) in Virginia. Brimleyana 
2:119-130. 
Douglas, Henry H. 1964. Caves of Virginia. Va. Cave Survey, Falls Church. 
