. Fresh-water biology. Freshwater biology. Length of body to mm., of esophagus mm. Spines somewhat curved, remarkably short, slightly larger poste- riorly, arranged in eleven rows Head circular in front, with four eye-spots. The only American species reported more than once. Orono, Me., and Trenton, New Jersey. It is the C. larus of Stokes, also of Fernald. Fig. 971. Chaetonotus brevispinosus in dorsal view, X 460, with spinose scale more highly magnified. (After Zelinka.) 19 (18) Head five lobed Chaetonotus acanthodes Stokes Length mm. Body covered with scales
. Fresh-water biology. Freshwater biology. Length of body to mm., of esophagus mm. Spines somewhat curved, remarkably short, slightly larger poste- riorly, arranged in eleven rows Head circular in front, with four eye-spots. The only American species reported more than once. Orono, Me., and Trenton, New Jersey. It is the C. larus of Stokes, also of Fernald. Fig. 971. Chaetonotus brevispinosus in dorsal view, X 460, with spinose scale more highly magnified. (After Zelinka.) 19 (18) Head five lobed Chaetonotus acanthodes Stokes Length mm. Body covered with scales which bear each a small supplementary scale; the latter in the anterior region possesses a short, curved spine; just behind the middle of the body these termi- nate in a cross row of larger spines. On each side ne? the caudal processes are two larger curved spines. Trenton, New Jersey. Fig. 972. Posterior end of Chaetonotus acanthodes in dorsal view. X about 57°. (After Stokes.). 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
