Ichthyosaurians; on variability of the skull in certain races of man;
on the races of man; Supplement on the brain.
Hybrid birds, production of.
Hydrophobia, communicable between man and the lower animals.
Hydroporus, dimorphism of females of.
Hyelaphus porcinus.
Hygrogonus.
Hyla, singing species of.
Hylobates, absence of the thumb in; upright progression of some species
of; maternal affection in a; direction of the hair on the arms of
species of; females of, less hairy below than males.
Hylobates agilis, hair on the arms of; musical voice of the;
superciliary ridge of; voice of.
Hylobates hoolock, sexual difference of colour in.
Hylobates lar, hair on the arms of; female less hairy.
Hylobates leuciscus, song of.
Hylobates syndactylus, laryngeal sac of.
Hylophila prasinana.
Hymenoptera, large size of the cerebral ganglia in; classification of;
sexual differences in the wings of; aculeate, relative size of the
sexes of.
Hymenopteron, parasitic, with a sedentary male.
Hyomoschus aquaticus.
730