Annelida, colours of.
Anobium tessellatum, sounds produced by.
Anolis cristatellus, male, crest of; pugnacity of the male; throat-pouch of.
Anser canadensis.
Anset cygnoides; knob at the base of the beak of.
Anser hyperboreus, whiteness of.
Antelope, prong-horned, horns of.
Antelopes, generally polygamous; horns of; canine teeth of some male; use of horns of; dorsal crests in; dewlaps of; winter change of two species of; peculiar markings of.
Antennae, furnished with cushions in the male of Penthe.
Anthidium manicatum, large male of.