plane, [414];

costae, [416] n.

Salenia, [538];

S. varispina, [538]

Saleniidae, [530], [537], [558]

Salivary gland of gnat in relation to malarial parasites, [105]

Salpingoeca, [111], [122]

Sand from sponges, a source of Foraminiferal tests, [62]

Sand, René, on Suctoria, [162]

Sand-dollar, [542]