Monograph of Living Chitons

antero-lateral corner apophyses area of tail areas of intermediate Baja California blade brown camera lucida sketch central areas Central tooth Chaetopleura Chiton Colour of tegmentum convex ctenidia denticles distally dorsal girdle scale dorsal scale dorsal view elongate oval Ferreira figs formula of insertion front margin front slope Gills holobranchial girdle is paved Gulf of California head of major Head valve semicircular holotype Intermediate valves broadly Ischnochiton jugal plate lateral areas lateral radula teeth lateral view lectotype Lepidozona Leptochiton less than semicircular major lateral tooth margin widely V-shaped marginal spicules mid-girdle mucro paratype paved with radiating Polyplacophora posterior margin widely postmucronal area pustules radiating rows riblets rostral view side margins rounded sketch of valve slightly concave slit formula slit rays slope straight smooth species striated synonymy tail valve teeth sharp tooth of radula tricuspid head Type locality valve VIII valves broadly rectangular valves not beaked ventral scales Ventrally the girdle