The fine structure of the protonephridial system in the land nemertean Pantinonemertes californiensis (Rhynchocoela, Enopla, Hoplonemertini) Å. JespersenJ. Lützen OriginalPaper Pages: 69 - 75
Differences in degeneration of the apical scolopidial organ in the labial palp of Lepidoptera during pupal development Jong-Kyoo LeeChang-Whan KimHelmut Altner OriginalPaper Pages: 77 - 83
Phosphatic spicules in the nematocyst batteries of Nanomia cara (Hydrozoa, Siphonophora) G. O. MackieR. M. Marx OriginalPaper Pages: 85 - 91
The mechanics of cutting and the form of shark teeth (Chondrichthyes, Elasmobranchii) T. H. Frazzetta OriginalPaper Pages: 93 - 107
Ultrastructural changes in the gastrodermal phagocytic cells of the planarian Dugesia gonocephala s.l. during food digestion (Plathelminthes) P. Garcia-CorralesJ. Gamo OriginalPaper Pages: 109 - 117
Anatomy and ultrastructure of ventral pharyngeal organs and their phylogenetic importance in Polychaeta (Annelida) G. Purschke OriginalPaper Pages: 119 - 135