Sagitta, [186], [186], [191], [534];

anatomy, [186] f., [188];

development, [189];

habits, [190];

species, [191], [193];

American species, [534]

Salensky, on development of Nemertinea, [99];

of Rotifers, [218]

Salinella, [93], [96]

Salivary glands, in Polyclads, [10], [24];