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Biol Bull 97: 100-107. (August 1949)
© 1949 Marine Biological Laboratory
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AN ELECTRON MICROSCOPE STUDY OF THE EGG MEMBRANES OF MELANOPLUS DIFFERENTIALIS (THOMAS)

JAMES HERVEY SHUTTS 1

1 Department of Zoology, State University of Iowa, Iowa City, Iowa

Electronmicrographs of the grasshopper egg membranes by the methods used show that:

A. There is no clearly resolvable internal structure of the chorion.

B. The yellow cuticle has no clearly resolvable internal structure, but has varying thicknesses due to minute ridges or projections on its outer surface.

C. The white cuticle is fibrous in structure.






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