. Fresh-water biology. Freshwater biology. 862 FRESH-WATER BIOLOGY 15 (16) Genital flaps present, acetabula 3, knob-like. Panisus Koenike 1896. Similar to the preceding in appearance; with chitinous plates more or less developed, in our one described species covering most of the dorsal surface. One species, P. cata- phractus, described by Koenike (1895) from Canada, about mm. in length. Fig. 1327. Panisus calapkra^-tus (Koenike). Epimeral area, genital area and ma?dllary shield. X 43. Outer side, left palpus. X 93. (After Koenike.) 16 (15) No genital flaps; numerous stalked acetabula. Spor
. Fresh-water biology. Freshwater biology. 862 FRESH-WATER BIOLOGY 15 (16) Genital flaps present, acetabula 3, knob-like. Panisus Koenike 1896. Similar to the preceding in appearance; with chitinous plates more or less developed, in our one described species covering most of the dorsal surface. One species, P. cata- phractus, described by Koenike (1895) from Canada, about mm. in length. Fig. 1327. Panisus calapkra^-tus (Koenike). Epimeral area, genital area and ma?dllary shield. X 43. Outer side, left palpus. X 93. (After Koenike.) 16 (15) No genital flaps; numerous stalked acetabula. Sporadoporus Wolcott, 1905. A red mite with body beset by small conical papillae; capitulum produced into a slender snout. One American species, not yet described, known so far only from Yellowstone Park, a little under medium size. Fig. Sporadoporus invalvaris (Piersig), a European form. Ventral surface, female. X 3i' Palpus. X 123. (Modified from Piersig.). 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
