New exocrine glands in the legionary ants of the genus Leptanilla (Hymenoptera, Formicidae, Leptanillinae) Bert HölldoblerJacqueline M. PalmerWilliam L. Brown Jr. OriginalPaper Pages: 255 - 261
Functional associations between the cribellum spinning plate and capture threads of Miagrammopes animotus (Araneida, Uloboridae) Brent D. Opell OriginalPaper Pages: 263 - 267
Comparative mechanics of filter feeding in Anas platyrhynchos, Anas clypeata and Aythya fuligula (Aves, Anseriformes) J. G. M. KooloosA. R. KraaijeveldG. A. Zweers OriginalPaper Pages: 269 - 290
Microscopical aspects on symbiosis of Spongilla lacustris (Porifera, Spongillidae) and green algae Uwe Saller OriginalPaper Pages: 291 - 296
Larvale Nierenorgane bei Lepidochiton cinereus (Polyplacophora) und Aeolidia papillosa (Gastropoda) Thomas Bartolomaeus OriginalPaper Pages: 297 - 307
Germ cell cluster in the panoistic ovary of Thysanoptera (Insecta) M. PritschJ. Büning OriginalPaper Pages: 309 - 313
Ultrastructural investigations on the nuchal organ of the protandric polychaete, Ophryotrocha puerilis (Polychaeta, Dorvilleidae) Birgit Rhode OriginalPaper Pages: 315 - 322