. Fresh-water biology. Freshwater biology. Fig. 901. Metopidia ehren- bergii Perty. X 400. (After Jeimlngs.). Fig. 904. Dino^haris pocillum Ehr. A, Female. B, Male. X 300. (After Weber.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918