. Fresh-water biology. Freshwater biology. Fio. 653. Polystoma hassaili. Ventral view. (After Stunkard.) 18 (17, 21) Genital hooks 32 ig 19 (20) Acetabula large, adjacent, not contiguous; pharynx smaller than oral sucker. . P. (Polystomoides) coronatum Leidy 1888. Body by mm. Caudal suckers mm. in diameter. Caudal disc with one pair of great hooks, mm. long, one pair of intermediate hooks, mm. long, and small hooks, mm. long. From the common food terrapin (Leidy), Fig. 654. Polystoma coronatum. Ventral view. X 9. (After Stunkard.). Please note that these images

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. Fresh-water biology. Freshwater biology. Fio. 653. Polystoma hassaili. Ventral view. (After Stunkard.) 18 (17, 21) Genital hooks 32 ig 19 (20) Acetabula large, adjacent, not contiguous; pharynx smaller than oral sucker. . P. (Polystomoides) coronatum Leidy 1888. Body by mm. Caudal suckers mm. in diameter. Caudal disc with one pair of great hooks, mm. long, one pair of intermediate hooks, mm. long, and small hooks, mm. long. From the common food terrapin (Leidy), Fig. 654. Polystoma coronatum. Ventral view. X 9. (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