FIGURE 2 in A new species of Fibularia from Japanese waters with a redescription of F. japonica and F. ovulum (Echinodermata: Echinoidea: Clypeasteroida)

FIGURE 2. Dimensions and pore arrangements of Fibularia species. A, aboral view; B, oral view; C, left lateral view; D, enlarged view of the apical system; E, enlarged view of the petaloid region. Abbreviations are as follows. Dimensions: AL = length of periproct, A-Tp = distance between periproct and posterior edge of test, AW = width of periproct, GD = diameter of gonopore 2 sensu Lovén's system (Lovén 1874), PL = length of petaloid region, PW = width of petaloid region, S-A = distance between peristome and periproct, SL = length of peristome, SW = width of peristome, TH = test height, TL = test length, TW = test width. Morphological terms: g = genital pore, hg = groove in hydropore, o = ocular pore, p = pore pair, ppr = periproct, pst = peristome, ab = aboral; ant = anterior; or = oral; post = posterior.