FIGURE 1 in SEM study of species of Oswaldella Stechow, 1919 (Cnidaria, Hydrozoa, Kirchenpaueriidae), with an annotated checklist of the species of the genus

FIGURE 1. Oswaldella bifurca (Hartlaub, 1904). A, hydrocladial branching and disposition of hydrothecae and gonothecae; B, cauline apophysis with axillary nematophores and branched hydrocladium; C, detail of cauline axillary nematophore; D–E, hydrocladial internodes with hydrotheca, mesial superior and mesial inferior nematophores (D frontal view, E lateral view); F, detail of mesial inferior nematophore; G, gonotheca. Scale bar: 400 µm (A), 100 µm (D–E, G) and 20 µm (B–C, E).