characters, [111];
development, [113];
transverse section, [103]
Schizoporella, [518], [527], [528], [529], [530], [531];
zooecium and avicularia, [482];
Leptoplana on, [22]
Schizotheca, [482], [518], [529]
Schmarda, on Oligochaeta, [366], [387]
Schmidt, on Rhabdocoels, [6]
Schneider, on life-history of certain Mesostoma, [48];