78,79 Dendrocoelopsis vaginata 58 



80,81 Dendrocoelopsis piriformis 59 



82,83 Dendrocoelopsis alaskensis 60 



84 Dendrocoelopsis hymanae 61 



85-87 Dendrocoelopsis americana 62 



88,89 Procotyla fluviatilis 63 



90,91 Procotyla typhlops 64 



92,93 Rectocephala exotica 65 



94 Planaria simplex 66 



95 Planaria unionicola 66 



96 Hydrolimax bruneus 67 



IX 



