Side-plates, of arms of Crinoidea, [589];
of Pentacrinidae, [591];
of Comatulidae, [594]
Siderastraea, [373], [375], [403];
S. sideraea, [403]
Siebold, v., on Sporozoa, [94]
Siedlecki, on Sporozoa, [94];
on reproduction of Lankesteria, [96] n.;
on life-cycle of Coccidiidae, [99]
Sierra Leone, prophylaxis of malaria at, [106]