The Descent of Man

their eyes glisten with rage, and after waving
their tails from side to side for a few seconds, as
if to gather energy, they dart at each other furiously,
rolling over and over, and holding
firmly with their teeth. The conflict generally
ends in one of the combatants losing his tail,
which is often devoured by the victor." The
male of this species is considerably larger than
the female (65. Mr. N.L. Austen kept these animals
alive for a considerable time; see 'Land
and Water,' July 1867, p. 9.); and this, as far as
Dr. Gunther has been able to ascertain, is the
general rule with lizards of all kinds. The male
alone of the Cyrtodactylus rubidus of the Andaman
Islands possesses pre-anal pores; and
these pores, judging from analogy, probably
serve to emit an odour. (66. Stoliczka, 'Journal
of the Asiatic Society of Bengal,' vol. xxxiv.
1870, p. 166.)