S. salmoneus, [105];

S. subpalmatus, [104];

S. uniformis, [104]

Spencer, on habits of Chiroleptes, [221] f.

Spermatophores, [53], [128]

Spermatozoa of Amphibia, [52] f.

Sphargidae, [313], [314], [333] f.;

affinities, [336];

morphology of shell, [337]

Sphargis coriacea, [333] f., [334];