Heads of Cyphomyrus macrops (top), Cyphomyrus psittacus (bottom) for comparison. From Poll (1939).

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Creative Commons Licence
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Heads of Cyphomyrus macrops (top), Cyphomyrus psittacus (bottom) for comparison. From Poll (1939).

. Photographer: Poll, M.. Publisher: Sullivan, John P..

Creator: 
Poll, M.
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