S I R S , -- I should be most grateful if anyone who has any specimens of flatflies (Hippoboscidae), taken from birds, would lend or give them to me for examination connected with my research at the D e p a r t m e n t of Zoology, University of Hull, Yorkshire. P o s t a g e will be refunded. D. S. H I L L "Information wanted on Lapwing chicks".--In connection with Mr. P. A. Rayfield's letter on the...

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