Differences, comparative, between different species of birds of the same sex.
Digits, supernumerary, more frequent in men than in women; supernumerary, inheritance of; supernumerary, early development of.
Dimorphism, in females of water-beetles; in Neurothemis and Agrion.
Diodorus, on the absence of beard in the natives of Ceylon.
Dipelicus Cantori, sexual differences of.
Diplopoda, prehensile limbs of the male.
Dipsas cynodon, sexual difference in the colour of.
Diptera.
Disease, generated by the contact of distinct peoples.
Diseases, common to man and the lower animals; difference of liability to, in different races of men; new, effects of, upon savages; sexually limited.