. Fresh-water biology. Freshwater biology. 64 (63). Peristome usually absent; with or without undulating membranes. 61 Without an undulating membrane; pharynx present. 62 One or two broad zones of strong ciha about the body; with a tail- hke tuft of cilia. ... 63 Two broad zones of strong cilia about the body. Body cyhndrical, with mouth posterior leading into a short pharynx. An- terior part of the body uniformly ciliated. A band of strong cilia near the middle and posterior end. Urocentrum Nitzsch. Representative species Urocentrum turbo Miiller 1786. Body broadly rounded anteriorly, rounded
. Fresh-water biology. Freshwater biology. 64 (63). Peristome usually absent; with or without undulating membranes. 61 Without an undulating membrane; pharynx present. 62 One or two broad zones of strong ciha about the body; with a tail- hke tuft of cilia. ... 63 Two broad zones of strong cilia about the body. Body cyhndrical, with mouth posterior leading into a short pharynx. An- terior part of the body uniformly ciliated. A band of strong cilia near the middle and posterior end. Urocentrum Nitzsch. Representative species Urocentrum turbo Miiller 1786. Body broadly rounded anteriorly, rounded or truncate posteriorly. Movement by a rotation on the long axis or swiftly darting from side to side. Contractile vacuole posterior with the band-like nucleus curved about it. Length loo ti. Pond water. Fig. 484. Urocentrum turbo, cv, contractile vacuole; », nucleus. X 200. (After Kent.) With an oblique circle of strong cilia near the anterior end. Body somewhat pyriform, rigid, finely ciHated. Two groove-like canals encircling the body. Mouth ventral, posterior to the grooves and leading into a short pharynx. Calceolus Diesing. Representative species. . Calceolus cypripedium James-Clark 1866. Color light brown. Very similar in movement to Urocentrum turbo. Length 80 to 160 ^. Fresh water. Fig. 485. Calceolus cypripedium. cv, contractile vacuole; macn, macronucleus. X 2»o. (After Kent.) 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. ]
Size: 1268px × 1970px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
