Fig. 2 in Four new sponge-inhabiting barnacles of the genus Acasta (Thoracica: Archaeobalanidae: Acastinae) from the Indo-Pacific

Fig. 2. Acasta turriformis sp. nov., opercular plates (holotype). A, B, Left scutum, internal and external view; C, D, Right scutum, external and internal view; E, F, Left tergum, external and internal view; G, H, Right tergum, internal and external view. Scale bars in µm.