Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 960
mation marksMr. J. Beck considers to be due to irregular corrugations of theouter surface of the under membrane, to slight undulations on theouter surface of the upper membrane, and to structure between thesuperposed membranes. It has been recently stated by Mr. Joseph 1 See Mr. Joseph Beck in Sir… … 904 INSECTS AXD ARACHNID A Beck that the scales of a lepidopterous insect belonging to the genusMormo, which under a low power present the watered-silk appear-ance seen in the Podura scale, under a i in. obj. show the exclama-tion markings, whilst under a ^ in. obj. they exhibit distinct ribsfrom…
Microscopy
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