Figure 4 in Taxonomy, phylogeny and biogeography of Politolana Bruce, 1981 (Crustacea: Isopoda: Cirolanidae)

Figure 4. (A, B) Right pereopod 1 and right pereopod 4, respectively, showing orientation terminology used in the species descriptions and character list: sm, superior margin; im, inferior margin; pdm, posterior distal margin; adm, anterior distal margin; pf, posterior face; ida, inferior distal angle; sda, superior distal angle (produced into 'meral lobe' on pereopod 1). Pleon (C) showing terminology used to describe the different regions: e, epimeres; lsf, lateral setal fringe; vf, ventral flanges.