Ototyphlonemertes

Figure 4.A–C Nemertopsis bivittata: B dorsal detail of the head and proboscis, C detail of the stylets D Ototyphlonemertes erneba (modified from Corrêa 1950 and Kirsteuer 1977) E–G Ototyphlonemertes lactea: E entire worm F detail of the statocysts G detail of the stylets H–J Zygonemertes fragariae: H entire worm I detail of the head J detail of the stylets K–M Zygonemertes virescens: K entire worm L detail of the head M detail of the stylets. ac accessory stylet, b base of the stylet, br brain, c sensorial cirrus, e eyes, p proboscis, pa proboscis papilla, s sylet, st statocysts.

Figure 4.A–C Nemertopsis bivittata: B dorsal detail of the head and proboscis, C detail of the stylets D Ototyphlonemertes erneba (modified from Corrêa 1950 and Kirsteuer 1977) E–G Ototyphlonemertes lactea: E entire worm F detail of the statocysts G detail of the stylets H–J Zygonemertes fragariae: H entire worm I detail of the head J detail of the stylets K–M Zygonemertes virescens: K entire worm L detail of the head M detail of the stylets. ac accessory stylet, b base of the stylet, br brain, c sensorial cirrus, e eyes, p proboscis, pa proboscis papilla, s sylet, st statocysts.

Stylet region of proboscis, showing slender styleta and basis and tubular middle chamber

Stylet of larger and smaller individuals, indicating spiral ridges

statocyst with spherical statolith

Outline of anterior portion of body showing statocysts (st) on ventral ganglia...outline of anterior portion of body showing statocysts (st) on ventral ganglia; other letters indicate: ct, cephalic blood lacunae; dg, dorsal ganglion; tn, lateral nerve cord; p, proboscis; PI, proboscis sheath

Organisation des vorderen Darmkanals (Sagitralschnitt)

Lage und Organisation der Gonaden (Hoden).

Lage und Organisation der Gonaden (Ovar)

Statocyste

Hauptstilctt mit Ductus ejaculatorius

Rekonstruktion des Stilettapparates

Diaphragma und BaIlon.

Lagebeziehung von Gehirn und Russel.

Querschnitt im Mitteldarmbereich mit Parenchymkomplexen und Epiderrnisdrusen

Querschnitt durch die Vorderdarmregion mit Darmmuskulatur.

Querschnitt durch die caudale Haflplatte unmittelbar vor dem After

Sagittalschnitt

Horizontalansicht (nach Lebendbeobachtungen von Ax, verandert).

Anordnung der Reservestilette.

Aufbau des Hauptstiletts

Lagebeziehung von Gehirn und Russel

Organisation des Vorderendes

Adhesive plate in O. americana