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Arquivos de Zoologia

Figs 179-188 Melanoides luberculatus anatomy: 179) buccal mass and csophagus opened by a longitudinal section in left side, lateral-left view, 180) buccal mass, vcntral view; 181) same, dorsal view; 182) pallial oviduct cxtracled from rectiun, righl vicw, part of mantle also shown, 183) buccal mass, dorsal view, dorsal wali and csophagus removed; 184) odontophorc, ventral wali, first layerof musclcs and membranes rcmoved; 185) same, dorsal view, radula and subradularcartilagę rcmovcd; 186) same, most of muscles deflected to show innerstructures, part of peribuccal musclcs also shown; 187) radula and subradularcartilageremoved, dorsal view, part of adjaccnt musclcs shown; 188) same, lateral-right vicw. Scales = 1 mm; cl = chamber with ova surrounding rectum; c2 = duet of chamber.