. Fresh-water biology. Freshwater biology. PARASITIC FLATWORMS 377 20 (19) Acetabula small, widely separated; pharynx equal in size to oral sucker. ... P. {Polystomotdes) microcotyle Stunkard 1916. Body 3 by mm. Caudal suckers mm. in diameter. On caudal disc one pair of great hooks, mm. long, one pair of intermediate hooks, mm. long, and small hooks, mm. long. Genital coronet of 32 equal and similar hooks. In mouth of Chrysemys marginata; Creston, Iowa. Fig. 655. Polystoma microcotyle. Ventral view. X 9. (After Stunkard.). 21 (17, 18) Genital hooks more than 32 in n
. Fresh-water biology. Freshwater biology. PARASITIC FLATWORMS 377 20 (19) Acetabula small, widely separated; pharynx equal in size to oral sucker. ... P. {Polystomotdes) microcotyle Stunkard 1916. Body 3 by mm. Caudal suckers mm. in diameter. On caudal disc one pair of great hooks, mm. long, one pair of intermediate hooks, mm. long, and small hooks, mm. long. Genital coronet of 32 equal and similar hooks. In mouth of Chrysemys marginata; Creston, Iowa. Fig. 655. Polystoma microcotyle. Ventral view. X 9. (After Stunkard.). 21 (17, 18) Genital hooks more than 32 in number. P. (Polystomoides) megacotyle Stunkard 1916. Body to by to mm. Genital coronet 36 to 42 equal hooks. Caudal suckers large, crowded. On caudal disc one pair of great hooks, mm. long, one pair of intermediate hooks, mm. long, and small hooks mm. long. From mouth cavity of Chrysemys mar- ginala; Creston, Iowa. Fig. 656. Polystoma megacotyle. Ventral view. X 12. (After Stunkard.). 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
