. Fresh-water biology. Freshwater biology. 362 FRESH-WATER BIOLOGY shows as a typical rosette-shaped pharynx. This form k unusual in that the rosette-shaped pharynx does not lead into the intestine from its ventral side, but opens into its anterior end so that when compressed its axis becomes directed forward. Intestine yellowish and extending almost to the posterior end, and having the general shape of the body. Fig. 642. Typhloplanid from Lake Canandaigua, N. Y. (A) Swimming freely, showing the dorsal pigmentation. X 55- (B) Slightly compressed with pharynx directed forward. X 40. au, eyes;
. Fresh-water biology. Freshwater biology. 362 FRESH-WATER BIOLOGY shows as a typical rosette-shaped pharynx. This form k unusual in that the rosette-shaped pharynx does not lead into the intestine from its ventral side, but opens into its anterior end so that when compressed its axis becomes directed forward. Intestine yellowish and extending almost to the posterior end, and having the general shape of the body. Fig. 642. Typhloplanid from Lake Canandaigua, N. Y. (A) Swimming freely, showing the dorsal pigmentation. X 55- (B) Slightly compressed with pharynx directed forward. X 40. au, eyes; da, intestine; ekv, anterior branches of protonephridium; g, brain; ph, pharynx; stz, rhabdite glands. (After von Graff.) Typhloplanid from Irondequoit, N. Y., von Graff 1911. Length mm. Without pigment and color- less apart from the brownish-red eyes and the oil drops of the intestine. Eyes irregular in shape and almost twice as far from the side of the body as from each other. The mouth lies on the boundary between the first and second thirds of the body. The anterior end shows many tracts of rhabdites. Collected from a reedy swamp. Fig. 643. Typhloplanid from Irondequoit, N. Y. (A) The animal slightly compressed. X 80. (B) Male copulatoiy organ. X 320. au, eye; be, bursa copula- trix; Jr, gland cells; £?5, ductus seminaUs; /, fat drops; ge, ovary; go, genital pwre; kd, granular glands; ks, granular secretion; m, muscles; ph, pharynx; st, tracts of rhabdites; te, testes. (After von Graff,). 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
