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Description of Dictyocysta reticulataTintinnid ciliate, total length 58-65 microns, diameter at mouth 37-43 microns, height of collar 20-25 microns, length of bowl 34-45 microns, greatest width of bowl 43-48 microns. The collar is a little more than a third of the whole length, and the bowl is widest just below the collar and is bluntly pointed aborally. There are usually 6, but occasionally 7, large angular windows in the collar. A little below the widest part of the bowl there are usually two circles of fenestrae. Sometimes, however, only one circle is present, and occasionally there are no fenestrae at all. The number in each circle is variable, the top one having 6 to 9, and the lower usually only 2 or 3, smaller and less regular. The rest of the bowl is made up of very regular polyhedral reticulations. One specimen showed very small projections all along the oral margin of the collar.