Abstract
DR. CARPENTER has kindly allowed us to examine specimens which were undoubtedly mature Planaria albissima, Vejd. On comparing these with drawings of immature specimens taken near Leeds in May and October 1922 and March 1923, and Pately Bridge, we feel convinced that the specimens from Yorkshire belong to this species. So far we have failed to find examples in which the sexual organs are developed.
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WHITEHEAD, H., PERCIVAL, E. [Letters to Editor]. Nature 117, 556 (1926). https://doi.org/10.1038/117556c0
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DOI: https://doi.org/10.1038/117556c0
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