An ultrastructural examination of developing and mature euspermatozoa in pyrazus ebeninus (Mollusca, Gastropoda, Potamididae) J. M. Healy OriginalPaper Pages: 157 - 175
The ultrastructure of the spermatozoon of Haplotaxis ornamentus (Annelida, Oligochaeta, Haplotaxidae) and its phylogenetic significance B. G. M. Jamieson OriginalPaper Pages: 177 - 188
Anatomy of the cecum of the gerbil Meriones unguiculatus (Mammalia, Rodentia, Cricetidae) Robert L. Snipes OriginalPaper Pages: 189 - 202
Primordial germ cells and early stages of oogenesis in Ophryotrocha puerilis (Polychaeta, Dorvillediae) H.-D. PfannenstielCh. GrĂ¼nig OriginalPaper Pages: 203 - 215
Fine structure of the coelomic epithelium of Sagitta elegans (Chaetognatha) Ulrich WelschVolker Storch OriginalPaper Pages: 217 - 222