FIGURE 12. Central nervous systems. A in Taxonomy and anatomy of Amphiboloidea (Gastropoda: Heterobranchia: Archaeopulmonata)

FIGURE 12. Central nervous systems. A. Amphibola crenata (Martyn, 1786). B. Salinator fragilis (Lamarck, 1822). C. Lactiforis tropicalis sp. nov.. D. Lactiforis takii (Kuroda, 1928). E. Naranjia cf. swatowensis (Yen, 1939). F. Phallomedusa solida (Martens, 1878). G. Maningrida arnhemensis sp. nov.. Scale bar = 500 µm. Subcerebral and parapedal commissures are indicated on the figures for A. crenata, S. fragilis and P. s o l i d a, but not on the figures for other species as the presence of these structures is unconfirmed.