. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CILIATES FROM FRESH WATER MUSSELS 83 MacLennan (1933) has recently given a complete description of the structure of the contractile vacuoles of a number of the Ophryosco- lecidse. In these forms he finds a definite tube leading from the con- pre-ortl FIG. 7. Ventral view of the anterior end of Conclioplitliirins mayna sp. nov. prepared by Klein's method. Note the greater number of ventral ciliary rows than dorsal. X 1000. ant. rent. snt. fib., anterior ventral suture fiber; c. fib., cross fibers; post. rent, sut. f
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CILIATES FROM FRESH WATER MUSSELS 83 MacLennan (1933) has recently given a complete description of the structure of the contractile vacuoles of a number of the Ophryosco- lecidse. In these forms he finds a definite tube leading from the con- pre-ortl FIG. 7. Ventral view of the anterior end of Conclioplitliirins mayna sp. nov. prepared by Klein's method. Note the greater number of ventral ciliary rows than dorsal. X 1000. ant. rent. snt. fib., anterior ventral suture fiber; c. fib., cross fibers; post. rent, sut. fib., posterior ventral suture fiber; prc-oml conn, fib., pre-oral connecting fiber. tractile vacuole through the pellicle. The pores at each end of the tube and the tube itself are permanent structures. THE NEUROMOTOR SYSTEM The structures of the neuromotor systems o-f Conchophthirius magna, C. anodontcr, and C. cnrtiis are alike with the exception of minor differences of size and extent. For that reason I shall describe the system as seen in C. inat/iia, calling attention to points of difference only where they occur in the other two species. The external fibrillar system can be demonstrated clearly by the silver method of Klein or by the use of Heidenhain's haematoxylin dif- ferentiated with H2(X. After the first method the fibers of the peri- stomal field are seen quite clearly but their inner connections are not shown. Since the hsematoxylin method stains both internal and external systems, it is of great advantage to use these two methods in conjunc- tion with one another. When one does so a wonderfully integrated system of connections is seen which I shall refer to as the neuromotor 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biolog
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
