Part of intermediate valve of L. sarsi. Leg. 1970. Det. P. Kaas. Depth 100 to 150m, Bohuslan, Sweden. SEM image, X50, provided by J. Sigwart. specimen RMNH.MOL.K.4901, coll. Naturalis, Leiden, Netherlands.
Valve granules coarser than on L. cancellatus with wider gaps between them.
On lateral area (1) , granules clumped in indistinct quincunxes, not in distinct lines (radial lines on L. cancellatus).
On pleural (2) and jugal (3) areas , granules in longitudinal lines; spaced more widely than on L. cancellatus so fewer rows; on this image 12 rows match width of apophysis (4) , about 16 on L. cancellatus.
Another example on image a 20 Leptochiton cancellatus album COMPARISON L. sarsi. .

KEY ID FEATURES and similar species at: 02 Leptochiton cancellatus