FIGURE 4 in A new genus of Rhinebothriidea from species of Psammobatis (Rajiformes: Arhynchobatidae) off Argentina

FIGURE 4. Semiorbiseptum mariae sp. nov. from Psammobatis rudis, septal musculature of bothridium. A. longitudinal section of bothridium (paratype MACN-Pa 702/3); B. light micrographs of bothridium (paratype MACN-Pa 703); C. transverse section of bothridium (paratype MACN-Pa 702/4). Abbreviations: l. loculus; lmb. longitudinal muscle bundle; ls. longitudinal septum; rm. radial muscle; ss. semicircular septum; tg. triangular gap; tmb. transverse muscle bundles; ts. transverse septum