. Fresh-water biology. Freshwater biology. Length mm. Flattened. Posterior end modified into a Icind of adhesive dislc. Color white by reflected light. Intestine very broad and yellow in color. Eyes dull yellow. Accessory pigment spots irregularly grouped near the eyes. The locomotor movements are very quick. Rochester, N. Y. Fig. 604. Dalyellia inermis. (^) Ventral view, slightly compressed: e, eye; m, mouth; w, yolk gland; ov, ovary; go, genital pore; co, male copulatory organ; te, testes. X iis. (.B) Ad- hesive disk of posterior end. (C) Male copula- tory organ enlarged: ch, chitinous t
. Fresh-water biology. Freshwater biology. Length mm. Flattened. Posterior end modified into a Icind of adhesive dislc. Color white by reflected light. Intestine very broad and yellow in color. Eyes dull yellow. Accessory pigment spots irregularly grouped near the eyes. The locomotor movements are very quick. Rochester, N. Y. Fig. 604. Dalyellia inermis. (^) Ventral view, slightly compressed: e, eye; m, mouth; w, yolk gland; ov, ovary; go, genital pore; co, male copulatory organ; te, testes. X iis. (.B) Ad- hesive disk of posterior end. (C) Male copula- tory organ enlarged: ch, chitinous tube; ks, vesi- cula granulorum; vs vesicula seminahs. X 300. (After von Graff.) 36 (35) Provided with true chitinous organ 37 37 (38) Chitinous portion of cirrus consists of a single chitinous spine. Dalyellia rochesteriana von Graff 1911. Scarcely i mm. long. Closely resembles O. rheesi. Colorless, transparent with very small dermal rhabdites. Brownish mesenchymatous pigment not so abundant as in D. rheesi. Intestine reddish-ocher-yellow. Sexual pore lies just posterior to the intestine in the beginning of the last third of the body. Rochester, N. Y. Fig. 60s. Dalyellia rochesteriana. Male copulatory organ enlarged: ch, chitinous spine; vs, vesicula seminalis; ks, vesicula granulorum. (After von Graff.) 38 (37) Chitinous portion of cirrus consists of more than one piece. 39 39 (44) Chitinous portion of cirrus consists of a number of transverse spines arranged in a row 40. 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
