Serranus, hermaphroditism in.
Setina, noise produced by.
Sex, inheritance limited by.
Sexes, relative proportions of, in man; proportions of, sometimes
influenced by selection; probable relation of the, in primeval man.
Sexual and natural selection, contrasted.
Sexual characters, effects of the loss of; limitation of.
Sexual characters, secondary; relations of polygamy to; transmitted
through both sexes; gradation of, in birds.
Sexual differences in man.
Sexual selection, explanation of; influence of, on the colouring of
Lepidoptera; objections to; action of, in mankind.
Sexual selection in spiders.
Sexual selection, supplemental note on.
Sexual similarity.
Shaler, Prof., sizes of sexes in whales.
Shame.
Sharks, prehensile organs of male.
Sharpe, Dr., Europeans in the tropics.
Sharpe, R.B., on Tanysiptera sylvia; on Ceryle; on the young male of
Dacelo Gaudi-chaudi.
Shaw, Mr., on the pugnacity of the male salmon.
794