24 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 119 



HoBBS, H. H., Jb, 



1942. A generic revision of the crayfishes of the subfamily Cambarinae 

 (Decapoda, Astacidae) with the description of a new genus and 

 species. Amer. Mid. Nat., vol. 28, no. 2, pp. 334-357. 



1950. Observations on the ecological distribution of three Virginia cray- 

 fishes. Virginia Journ. Sci., vol. 1, n. s., no. 4, p. 349. 



1959. In W. T. Edmondson, Fresh water biology, xix+1248 pp., figs. 

 3.1-46.1. 

 Johnson, R. M. 



1957. The Agar diflfusion technique as applied to the study of serological 

 relationships among crayfishes. Virginia Journ. Sci., vol. 3, pp. 

 177-184. 



1959. Serology of crayfishes. Virginia Journ. Sci., vol. 10, n. s., no. 3, 



pp. 181-185. 

 Johnson, T. L. 



1960. Histological observations on the sperm duct of Cambarus longulus 



Girard. Trans. Amer. Micros. Soc, vol. 79, no. 2, pp. 229-238. 

 Newcombe, C. L. 



1929. The crayfishes of West Virginia. Ohio Journ. Sci., vol. 29, pp. 

 267-288. 

 Ortmann, A. E. 



1902. The geographical distribution of freshwater Decapods and its bearing 

 upon ancient geography. Amer. Philos. Soc, vol. 41, no. 171, 

 pp. 217-400, figs. 1-8. 

 1905. The mutual affinities of the species of the genus Cambarus, and their 

 dispersal over the United States. Proc. Amer. Philos. Soc, vol. 

 44, no. 180, pp. 91-136, 1 map. 

 1913. The Alleghenian Divide and its influence upon the freshwater fauna. 



Proc. Amer. Philos. Soc, vol. 52, no. 210, pp. 287-390, 3 pis. 

 1931. Crawfishes of the Southern Appalachians and the Cumberland 

 Plateau. Ann. Carnegie Mus., vol. 20, no. 2, pp. 61-160. 

 Parish, C. 



1948. A contribution toward a knowledge of the crayfish Cambarus longulus 

 dasydactylus, tvith special reference to the annulus ventralis. 

 Unpublished master's thesis. University of Virginia. 

 Reid, G. K. 



1961. Ecology of inland waters and estuaries, xvi + 375 pp. 

 Snodgrass, R. E. 



1952. A textbook of arthropod anatomy, viii + 363 pp. 



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