in Leeches, [396]

Salmacina, [273], [341];

brood-pouch, [276];

fission, [281]

Salpina, [200], [225]

Salpinidae, [225]

Sandmason, [328]

Saxicava, Eulalia in borings of, [314]

Scales, of Gastrotricha, [233]

Scalibregma, [334]