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LITERATURE. 
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text-figs. 
:04a. Crayfish spermatozoa. Anat. anz., vol. 25, p. 456-463, 7 text- 
figs. 
: 05. The sperm-receptacle of Cambarus. Johns Hopkins univ. circ., 
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: 06. Ontogeny of the annulus ventralis. Biol, bull., vol. 10, p. 122- 
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: 06a. Partial regeneration of the sperm receptacle in crayfish. Journ. 
exper. zool., vol. 3, p. 121-128, 11 text-figs. 
: 06b. Egg-laying of crayfish. Amer. nat., vol. 40, p. 343-356. 
Bumpus, H. C. 
’91. The embryology of the American lobster. Journ. morph., vol. 5, 
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Chantran, —. 
’70. Observations sur l’histoire naturelle de l’ecrevisse. Compt. rend, 
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vol. 74, p. 201-202. 
Faxon, W. 
’84. On the so-called dimorphism in the genus Cambarus. Amer. 
journ. sci., ser. 3, vol. 27, p. 42-44. 
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’98. Observations on the Astacidae in the United States national 
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Hagen, H. A. 
’70. Illustrated catalogue of the Museum of comparative zoology at 
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Hay, —. 
’96. The crawfishes of the State of Indiana. 20th ann. report of the 
department of geology and natural resources of Indiana, p. 475-507. 
Herrick, F. H. 
’95. The American lobster: a study of its habits and development. 
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