34 (31) Eyes wanting Dendroooelopsis hymanae (p. 61) 



Eyes two, or two groups of scattered eyes: 



Proaotyla fluviatilis (p- 63) 

 Eyes multiple, arranged in two longitudinal rows: 



Dendroooelopsis cmerioana (p. 62) 



35 (1) Penis reduced, without bulb and with rudimentary papilla: 



Eymanelta vetenuova (p. 31) 



Penis normal, with bulb and papilla 36 



36 (35) Ventral surface unpigmented Phagooata tahoena (p. 38) 



Ventral surface pigmented Dugesia polyohroa (p. 24) 



/ 



18 



