On sperm ultrastructure, spermiogenesis and the spermatophore of Heterolaophonte minuta (Copepoda, Harpacticoida) B. Hosfeld Original Article Pages: 195 - 202
Ultrastructure of the spermatheca and its associated gland in the ant Crematogaster opuntiae (Hymenoptera, Formicidae) Diana E. WheelerPhilip H. Krutzsch Original Article Pages: 203 - 212
Ultrastructure of spermatogenesis and spermatozoa of Cephalodasys maximus (Gastrotricha, Macrodasyida) U. Fischer Original Article Pages: 213 - 225
Spernathecal morphology, sperm transfer and a novel mechanism of sperm displacement in the rove beetle, Aleochara curtula (Coleoptera, Staphylinidae) C. GackK. Peschke Original Article Pages: 227 - 237
Morphology, morphometry and ultrastructure of the maxillary gland of the terrestrial isopod Porcellio scaber (Crustacea, Oniscidea) W. Kobusch Original Article Pages: 239 - 246
Ultrastructure of the metanephridial system in Aeolosoma bengalense (Annelida) D. Bunke Original Article Pages: 247 - 258