Monograph of Living Chitons

Animal apices apophyses area of tail Articulamentum base blade brown California camera lucida sketch Carpenter central areas Central tooth Chaetopleura Chiton coast Colour of tegmentum convex covered dark defined denticles Description distally Distribution dorsal elevation dorsal girdle scale dorsal view eaves Ferreira figs finely front margin Gills holobranchial girdle grooved half head valve Head valve semicircular hind margin holotype indicated inner insertion plates intermediate valves Ischnochiton Island jugal plate lateral areas lateral view length Lepidozona light longitudinal margin straight marginal spicules middle moderately mucro narrow notched oval Pilsbry pointed postmucronal area pustules radiating raised rectangular riblets ribs rounded scales sculptured shallow sharp short side slopes sinus slightly slightly concave slightly convex slit formula slit rays slope smooth solid species specimen spicules Stenoplax straight striated strongly tail valve tooth of radula Type locality valve VIII valves not beaked weakly wide width