. Economic entomology . Achoiutes purpurascens. ot an inch in length " On a hot bed, and under branches of trees. Throughout the ;—{Litbhock). No. 20. PoDURA AQUATICA {Unit.).—2^. Magnified sketch of ditto. One of the single-clawed Poduridse; opaque blackish-blue. Common on the surface of standing water throughout the north of Europe to Switzerland. Also found in Greenland.

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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondonchapmanandha