of Land Planarians, [33];

of Cestodes, [75];

of Nemertinea, [100]

Slavina, [377]

Sluiter, on Gephyrea, [429], [447]

Smitt, on Polyzoa, [516]

Smittia, [518], [527], [529];

zooecium and avicularium, [482]

Snakes, parasites of, [142]

Solenopharyngidae, [50]