Silverline system; Right side

Description :

Silverline system (right side)of plagiopyla nasuta (STEIN, 1860). Originating at the right end of the peristome there is a densely cross striated band in the shape of a shepherd's crook (seen well here). This band extends posteriorly to approximately the level of the equator. In vivo this structure is difficult to discern without DIC.Irregularly spaced transverse fibers between primary meridians result in a mesh pattern. The peristome is seen at the viewer's upper left. Stained by the dry silver nitrate technic (see Foissner, W. Europ. J. Protistol., 27:313-330;1991). Brightfield