FIGURE 5 in Neverita delessertiana (Récluz in Chenu, 1843): a naticid species (Gastropoda: Caenogastropoda) distinct from Neverita duplicata (Say, 1822) based on molecular data, morphological characters, and geographical distribution

FIGURE 5: A: Size ratios (height/width) of 181 specimens of Neverita duplicata and 97 specimens of Neverita delessertiana from Massachusetts to Honduras (for localities see Table 2). The ratios range from 0.63 to 1.13 for N. duplicata and from 0.74 to 1.01 for N. delessertiana. B: The averages of the size ratios are 0.85 ± 0.006 (SEM) for N. duplicata and 0.90 ± 0.005 (SEM) for N. delessertiana (P <0.0001, non­parametric two­tailed t­test).